Today's Message Index:
----------------------
1. 05:38 AM - Re: JabiruEngine-List Digest: 1 Msgs - 03/21/08 (T. Graziano)
2. 08:09 AM - Re: Wiring 3300 to an alternator switch (KC7HFA)
3. 08:24 AM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
4. 08:43 AM - Re: Wiring 3300 to an alternator switch (KC7HFA)
5. 08:47 AM - Re: Re: Wiring 3300 to an alternator switch (Joe Ronco)
6. 08:58 AM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
7. 09:49 AM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
8. 09:52 AM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
9. 10:26 AM - Re: Re: Wiring 3300 to an alternator switch (Craig Payne)
10. 10:42 AM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
11. 05:50 PM - Re: Re: Wiring 3300 to an alternator switch (Peter Harris)
12. 06:27 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
13. 07:07 PM - Re: Re: Wiring 3300 to an alternator switch (Ron Shannon)
14. 07:28 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
15. 07:40 PM - Re: Wiring 3300 to an alternator switch (wypaul)
16. 07:45 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
17. 07:55 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
18. 08:00 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
19. 08:20 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
20. 08:23 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
21. 08:26 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
22. 08:37 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
23. 08:41 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
24. 08:45 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
25. 08:49 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
26. 08:55 PM - Re: Re: Wiring 3300 to an alternator switch (BobsV35B@aol.com)
27. 09:06 PM - Re: Re: Wiring 3300 to an alternator switch (Noel Loveys)
Message 1
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| Subject: | Re: JabiruEngine-List Digest: 1 Msgs - 03/21/08 |
I use a Cessna Type Alt/Master split switch, which came with my Power Panel.
The Alt, which usually provides power for the Alt Field in a regular
alternator (the Jab has a permanent magnet alternator), provides +12V to a
Radio Shack, 12V - 30 Amp relay when the alt switch is ON.
The "Red" wire from my voltage regulator goes to the relay and then to the
master solenoid. The master solenoid also has a line from the battery, so
in effect the alternator provides power to the battery also when the relay
is on, i.e Alt ON. I also have a 30 Amp fuse in the line.
I have the "yellow wire" (voltage sense wire for the alternator) attached
straight to the batt +
Tony Graziano
601XL/Jab3300; N493TG; 359 hrs
----- Original Message ----- > Subject: JabiruEngine-List: Wiring 3300 to an
alternator switch
> From: "pequeajim" <pequeajim@gmail.com>
>
>
> I am wondering if any of you are using a split master switch with your
> Jabiru,
> and if so, how did you wire the regulator side?
>
> Linda, I thought you guys did this?
>
> I am at the point where I would like to wire this switch and am wondering
> how I
> should do it?
>
> Jim!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=171534#171534
>
>
>
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| Subject: | Re: Wiring 3300 to an alternator switch |
I used the split master on my Jabiru 3300. If I remember correctly I took the
yellow wire from the regulator and ran it to one pole of the "Alt" split switch.
I then jumped the other pole of the "Alt" switch over to on side of the "Master"
switch. Note: If the "Alt" switch is not "ON" with the engine running,
you will NOT get a tachometer reading... Needless to say this issue caused me
a lot of grief, until I realized I was causing my own problem! I can verify
the exact schematic upon request.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=171722#171722
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Morning Ron,
I am absolutely, totally, and completely befuddled as to how the alternator
works on the Jabiru engine.
When I ask questions, I am told it works just like all other permanent
magnet alternators, but I can find no instructional documentation that will
explain how such alternators are supposed to work. What I seem to get for an answer
to my question is direction as to which wire to hook where. What I want is
instructional material that will tell my how and why it works. It is very
difficult to trouble shot anything which I do not understand.
Can you or anyone else direct me to a source for such education?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:10:19 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
--> JabiruEngine-List message posted by: "KC7HFA" <kc7hfa@totalusa.net>
I used the split master on my Jabiru 3300. If I remember correctly I took
the yellow wire from the regulator and ran it to one pole of the "Alt" split
switch. I then jumped the other pole of the "Alt" switch over to on side of
the "Master" switch. Note: If the "Alt" switch is not "ON" with the engine
running, you will NOT get a tachometer reading... Needless to say this issue
caused me a lot of grief, until I realized I was causing my own problem! I
can verify the exact schematic upon request.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
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| Subject: | Re: Wiring 3300 to an alternator switch |
I learned electronics many years ago, while in the military. I just googled "permanent magnet regulator" and found this http://continuouswave.com/whaler/reference/PMA.html it gives a description of how the electricity is generated then how it's converted to DC via the regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=171729#171729
Message 5
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| Subject: | Re: Wiring 3300 to an alternator switch |
Chapter 3 in The AeroElectric Connection Book talks about PM alternators.
Joe R
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 9:22 AM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Ron,
I am absolutely, totally, and completely befuddled as to how the alternator
works on the Jabiru engine.
When I ask questions, I am told it works just like all other permanent
magnet alternators, but I can find no instructional documentation that will
explain how such alternators are supposed to work. What I seem to get for an
answer to my question is direction as to which wire to hook where. What I
want is instructional material that will tell my how and why it works. It is
very difficult to trouble shot anything which I do not understand.
Can you or anyone else direct me to a source for such education?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:10:19 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I used the split master on my Jabiru 3300. If I remember correctly I took
the yellow wire from the regulator and ran it to one pole of the "Alt" split
switch. I then jumped the other pole of the "Alt" switch over to on side of
the "Master" switch. Note: If the "Alt" switch is not "ON" with the engine
running, you will NOT get a tachometer reading... Needless to say this
issue caused me a lot of grief, until I realized I was causing my own
problem! I can verify the exact schematic upon request.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 6
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Morning Ron,
I graduated from the Aviation Electrician Mate training at Naval Air
Station, Jacksonville, in 1947 (top man in my class by the way) but can recall
no
training concerning permanent magnet alternators!<G>
Thanks for the reference. I will get to studying right away.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
--> JabiruEngine-List message posted by: "KC7HFA" <kc7hfa@totalusa.net>
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description of how the electricity is
generated then how it's converted to DC via the regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 7
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is the
controlling device associated with the Jabiru? Sounds like Evinrude has done
quite
well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification and
all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of electronics
if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
--> JabiruEngine-List message posted by: "KC7HFA" <kc7hfa@totalusa.net>
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description of how the electricity is
generated then how it's converted to DC via the regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 8
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Afternoon Joe,
Gad! I should have looked! Thanks Joe.
Once again, I will have to call upon 'Lectric Bob for my rescue.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:48:38 A.M. Central Daylight Time,
joe@halzel.com writes:
Chapter 3 in The AeroElectric Connection Book talks about PM alternators.
Joe R
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 9
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| Subject: | Re: Wiring 3300 to an alternator switch |
There is a schematic of the regulator internals in the Jabiru manual.
-- Craig
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 10:47 AM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is the
controlling device associated with the Jabiru? Sounds like Evinrude has
done quite well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification
and all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of
electronics if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is generated then how it's converted to DC via the
regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 10
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Afternoon Craig,
I did read that, but all it says is that if the voltage gets too high, it
cuts off!
No description of how it is supposed to work, how it cuts off and of what
happens to the current flow and operating temperatures when it is cut off.
What I am looking for is an explanation of the theory and the actual
procedures used. I read Bob Nuckolls' explanation and the one so kindly provided
by
Ron about outboard motors. The most descriptive thus far has been the
Evinrude material.
I still have not seen anything that tells us how the current and/or voltage
is regulated or controlled. It appears that crude systems just sink it to
ground and generate heat doing so while Evinrude has seemingly found a way to
mitigate the disadvantages of doing that.
Still searching for the "Rest Of The Story"!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 12:27:48 P.M. Central Daylight Time,
craig@craigandjean.com writes:
There is a schematic of the regulator internals in the Jabiru manual.
-- Craig
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 11
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| Subject: | Re: Wiring 3300 to an alternator switch |
Bob,
You are right about the excess current it is taken to earth at the base of
the regulator which should be mounted on a heat sink panel. AC output from
the PM alternator varies with RPM and the excess energy is bled off to earth
during the rectification/regulation process.
It sounds a bit primitive but it is simple and effective. Over voltage
protection is worthwile in case the regulator burns out.
Peter H
_____
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Sunday, 23 March 2008 2:47 AM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is the
controlling device associated with the Jabiru? Sounds like Evinrude has
done quite well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification
and all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of
electronics if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is generated then how it's converted to DC via the
regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 12
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Evening Peter,
Thanks for the information.
Do most Jabiru operators use some sort of over voltage protection? Is there
a common method that has been successful?
As I am sure you can tell, my knowledge in this area is woefully inadequate.
Are there any good sources of data that I can study?
If a contactor was opened by a crowbar or other over voltage protection such
that it would save the electronics, would the alternator still be damaged or
is there some modality that would cause it to reduce it's output?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 7:51:24 P.M. Central Daylight Time,
peterjfharris@bigpond.com writes:
Bob,
You are right about the excess current it is taken to earth at the base of
the regulator which should be mounted on a heat sink panel. AC output from the
PM alternator varies with RPM and the excess energy is bled off to earth
during the rectification/regulation process.
It sounds a bit primitive but it is simple and effective. Over voltage
protection is worthwhile in case the regulator burns out.
Peter H
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 13
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| Subject: | Re: Wiring 3300 to an alternator switch |
Bob,
Use the B&C over voltage protection system (504-1 PM-OV) designed for
permanent magnet alternators. See http://www.bandc.biz/PmOVdesc.html
Ron
On Sat, Mar 22, 2008 at 7:24 PM, <BobsV35B@aol.com> wrote:
> Good Evening Peter,
>
> Thanks for the information.
>
> Do most Jabiru operators use some sort of over voltage protection? Is
> there a common method that has been successful?
>
> As I am sure you can tell, my knowledge in this area is woefully
> inadequate.
>
> Are there any good sources of data that I can study?
>
> If a contactor was opened by a crowbar or other over voltage protection
> such that it would save the electronics, would the alternator still be
> damaged or is there some modality that would cause it to reduce it's output?
>
> Happy Skies,
>
> Old Bob
> AKA
> Bob Siegfried
>
Message 14
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Evening Ron,
I will contact Bill on Monday. Great thought!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 9:08:24 P.M. Central Daylight Time,
rshannon@CRUZCOM.COM writes:
Bob,
Use the B&C over voltage protection system (504-1 PM-OV) designed for
permanent magnet alternators. See _http://www.bandc.biz/PmOVdesc.html_
(http://www.bandc.biz/PmOVdesc.html)
Ron
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 15
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| Subject: | Re: Wiring 3300 to an alternator switch |
lectric Bob is the man for these question. I am using Bob's crowbar setup for
over voltage protection with the Jabiru but flew behind a Revmaster for 200 hrs.
without it. Ya don't need it tell you do. Bob's friends at B & C will be
another good source of info.
http://www.bandc.biz/parts.html
Paul
--------
Paul Spackman
Q-2 Jabiru 3300
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=171843#171843
Message 16
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| Subject: | Re: Wiring 3300 to an alternator switch |
That's where the confusion starts. If it has a permanent magnet it is
called a generator or a magneto. If this is the case you you can shut off
the output by switching the heavy wire that goes from the magneto to the
battery. Generators and magnetos are somewhat limited in their capacity to
generate electrical power so over voltage is not generally a consideration.
Alternators, instead of spinning a large magnet inside a bunch of coils,
spins an electromagnet instead. By varying the voltage hitting the
electromagnet on a wire marked F for field or field coil, the output of the
alternator can be varied... the more power delivered to the field coil
through the F connector the more current produced by the alternator. The
regulator controls this power output. The idea is two fold... First the
current in the field coil is relatively small so a small current can control
a much larger output current so the large contactors that used to be found
in early cars and trucks are not needed. If too much current is fed to the
F connector the alternator can actually go into overvoltage... This usually
turns on a little light and at the same time chops the power to the field
coil so the output of the alternator drops to 0.
Either way a switch designed to take the maximum current output of the
alternator or generator can be placed in the larger power wire between the
alternator and the battery or main buss depending on how your plane is
wired.
Alternators all produce alternating current AC which needs to be turned into
direct current DC. This is usually done through a little device called a
rectifier bridge. This bridge is constructed by four considerably large
diodes. Some alternators have one or two rectifier bridges built right into
them. The reason a shut off switch in the large wire is a good idea is
encase you burn out one or more of the diodes and short out your battery....
Actually a circuit breaker is also a good idea.
The F lead, a ground and possibly a voltage sensing lead are generally
connected via a plug in with a specific shape for your alternator..... The
power output on the alternator is generally a lug with a nut to hold the
wire on the lug and sometimes a plastic insulator around the lug.
If your generating device only has one wire coming form it when it is a
permanent magnet type and the voltage regulator then will be a set of
contacts which are spring loaded and make and break the charging cycles.
Such generators generally are designed to produce DC without the use of a
rectifier bridge..
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 12:52 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Ron,
I am absolutely, totally, and completely befuddled as to how the alternator
works on the Jabiru engine.
When I ask questions, I am told it works just like all other permanent
magnet alternators, but I can find no instructional documentation that will
explain how such alternators are supposed to work. What I seem to get for an
answer to my question is direction as to which wire to hook where. What I
want is instructional material that will tell my how and why it works. It is
very difficult to trouble shot anything which I do not understand.
Can you or anyone else direct me to a source for such education?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:10:19 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I used the split master on my Jabiru 3300. If I remember correctly I took
the yellow wire from the regulator and ran it to one pole of the "Alt" split
switch. I then jumped the other pole of the "Alt" switch over to on side of
the "Master" switch. Note: If the "Alt" switch is not "ON" with the engine
running, you will NOT get a tachometer reading... Needless to say this
issue caused me a lot of grief, until I realized I was causing my own
problem! I can verify the exact schematic upon request.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 17
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| Subject: | Re: Wiring 3300 to an alternator switch |
Thanks Paul
Do Not Archive
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 9:40:40 P.M. Central Daylight Time,
loadout@bresnan.net writes:
--> JabiruEngine-List message posted by: "wypaul" <loadout@bresnan.net>
lectric Bob is the man for these question. I am using Bob's crowbar setup
for over voltage protection with the Jabiru but flew behind a Revmaster for
200 hrs. without it. Ya don't need it tell you do. Bob's friends at B & C
will be another good source of info.
http://www.bandc.biz/parts.html
Paul
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 18
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| Subject: | Re: Wiring 3300 to an alternator switch |
Thanks Noel.
We're gaining on it!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
Do not Archive
In a message dated 3/22/2008 9:46:29 P.M. Central Daylight Time,
noelloveys@yahoo.ca writes:
That=99s where the confusion starts. If it has a permanent magnet it
is
called a generator or a magneto. If this is the case you you can shut off t
he
output by switching the heavy wire that goes from the magneto to the batter
y.
Generators and magnetos are somewhat limited in their capacity to generate
electrical power so over voltage is not generally a consideration.
Alternators, instead of spinning a large magnet inside a bunch of coils,
spins an electromagnet instead. By varying the voltage hitting the
electromagnet on a wire marked F for field or field coil, the output of the
alternator
can be varied... the more power delivered to the field coil through the F
connector the more current produced by the alternator. The regulator contr
ols
this power output. The idea is two fold... First the current in the fiel
d
coil is relatively small so a small current can control a much larger outpu
t
current so the large contactors that used to be found in early cars and tru
cks
are not needed. If too much current is fed to the F connector the alternat
or
can actually go into overvoltage... This usually turns on a little light a
nd
at the same time chops the power to the field coil so the output of the
alternator drops to 0.
Either way a switch designed to take the maximum current output of the
alternator or generator can be placed in the larger power wire between the
alternator and the battery or main buss depending on how your plane is wire
d.
Alternators all produce alternating current AC which needs to be turned int
o
direct current DC. This is usually done through a little device called a
rectifier bridge. This bridge is constructed by four considerably large
diodes. Some alternators have one or two rectifier bridges built right int
o them.
The reason a shut off switch in the large wire is a good idea is encase you
burn out one or more of the diodes and short out your battery.... Actually
a
circuit breaker is also a good idea.
The F lead, a ground and possibly a voltage sensing lead are generally
connected via a plug in with a specific shape for your alternator..... The
power
output on the alternator is generally a lug with a nut to hold the wire on
the
lug and sometimes a plastic insulator around the lug.
If your generating device only has one wire coming form it when it is a
permanent magnet type and the voltage regulator then will be a set of conta
cts
which are spring loaded and make and break the charging cycles. Such
generators generally are designed to produce DC without the use of a rectif
ier
bridge..
Noel
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aol
hom00030000000001)
Message 19
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| Subject: | Re: Wiring 3300 to an alternator switch |
I just googled jabiru Schematic and came up with this: (top of thepage!)
www.us
<http://www.usjabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf>
jabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf
Everything you wanted to know about Jabiru engines and more besides... Check
out page 54 for a circuit diagram. That diagram shows the output to the
battery being switched ( Master) and protected by a fuse link. The feed to
the main buss is not switched or protected.... I'd recommend a breaker of
at least the capacity of the alternator. Funny on page 57 they say to hook
up the battery direct... I don't htink they looked at their own schematic
and that's what I'd go by.
According to page 56 you can put a switch on the red wire that comes from
pin #5 on the voltage regulator and then feed the output of that switch to
the main buss.
A word of caution here the solid state ( lots of diodes and transistors)
rectifier/regulator may not be able to stand switching the alternator on and
off during normal flight so save turning off the line to the main buss as an
emergency procedure.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 2:17 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is the
controlling device associated with the Jabiru? Sounds like Evinrude has
done quite well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification
and all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of
electronics if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is generated then how it's converted to DC via the
regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 20
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| Subject: | Re: Wiring 3300 to an alternator switch |
On the left side of the schematic on page 54 (?) you see the basic rectifier
bridge. The right hand side has a number of transistors which act as valves
to keep the output of the generator (alternator) consistent. The wire shown
running across the top and down to the master switch is the one that tells
the transistors how much to turn on or off. All that stuff is inside the
regulator and is not adjustable.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 3:10 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Afternoon Craig,
I did read that, but all it says is that if the voltage gets too high, it
cuts off!
No description of how it is supposed to work, how it cuts off and of what
happens to the current flow and operating temperatures when it is cut off.
What I am looking for is an explanation of the theory and the actual
procedures used. I read Bob Nuckolls' explanation and the one so kindly
provided by Ron about outboard motors. The most descriptive thus far has
been the Evinrude material.
I still have not seen anything that tells us how the current and/or voltage
is regulated or controlled. It appears that crude systems just sink it to
ground and generate heat doing so while Evinrude has seemingly found a way
to mitigate the disadvantages of doing that.
Still searching for the "Rest Of The Story"!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 12:27:48 P.M. Central Daylight Time,
craig@craigandjean.com writes:
There is a schematic of the regulator internals in the Jabiru manual.
-- Craig
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 21
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|
| Subject: | Re: Wiring 3300 to an alternator switch |
Nothing with a turbine would have one! They also use variable displacement
pumps to keep their alternators turning at a constant speed.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 1:26 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Ron,
I graduated from the Aviation Electrician Mate training at Naval Air
Station, Jacksonville, in 1947 (top man in my class by the way) but can
recall no training concerning permanent magnet alternators!<G>
Thanks for the reference. I will get to studying right away.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is generated then how it's converted to DC via the
regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
Message 22
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| Subject: | Re: Wiring 3300 to an alternator switch |
Good Evening Noel,
I note that the one you googled is dated as revision 4. My copy is revision
3 and I see that revision 4 shows all new pages!
I guess I will have to print a whole new manual. I wonder if they really di
d
revise every page or if they just decided to list all of them as new? That's
an awful lot of wasted paper!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:21:22 P.M. Central Daylight Time,
noelloveys@yahoo.ca writes:
I just googled jabiru Schematic and came up with this: (top of the page!)
_www.usjabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf_
(http://www.usjabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf)
Everything you wanted to know about Jabiru engines and more besides...
Check out page 54 for a circuit diagram. That diagram shows the output to
the
battery being switched ( Master) and protected by a fuse link. The feed to
the
main buss is not switched or protected.... I=99d recommend a breaker
of at
least the capacity of the alternator. Funny on page 57 they say to hook up
the
battery direct... I don=99t htink they looked at their own schematic
and that=99
s what I=99d go by.
According to page 56 you can put a switch on the red wire that comes from
pin #5 on the voltage regulator and then feed the output of that switch to
the
main buss.
A word of caution here the solid state ( lots of diodes and transistors)
rectifier/regulator may not be able to stand switching the alternator on and
off during normal flight so save turning off the line to the main buss as an
emergency procedure.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of BobsV35B
@aol.com
Sent: Saturday, March 22, 2008 2:17 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is th
e
controlling device associated with the Jabiru? Sounds like Evinrude has do
ne quite
well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification a
nd
all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of el
ectronics
if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
--> JabiruEngine-List message posted by: "KC7HFA" <kc7hfa@totalusa.net>
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is
generated then how it's converted to DC via the regulator... Hope it helps
.
--------
Ron Asbill
N601ZX - CH-601 XL
____________________________________
Create a Home Theater Like the Pros. _Watch the video on AOL Home_
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aol
hom0003000000000
1) .
http://www.matronics.com/Navigator?JabiruEngine-List
http://forums.matronics.com
http://www.matronics.com/contribution
(http://www.matronics.com/Navigator?JabiruEngine-List)
(http://www.matronics.com/contribution)
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aol
hom00030000000001)
Message 23
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| Subject: | Re: Wiring 3300 to an alternator switch |
Ah yes! The vaunted Vicker's Drive.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
Do Not Archive
In a message dated 3/22/2008 10:27:15 P.M. Central Daylight Time,
noelloveys@yahoo.ca writes:
Nothing with a turbine would have one! They also use variable displacement
pumps to keep their alternators turning at a constant speed.
Noel
**************Create a Home Theater Like the Pros. Watch the video on AOL
Home.
(http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001)
Message 24
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|
| Subject: | Re: Wiring 3300 to an alternator switch |
The regulator case itself should be a heat sink. In this case the regulator
actually workd as a transistor controlled voltage divider circuit. The fuse
link protects the battery and as I said I also recommend a switch or better
yet a circuit breaker between pin 5 of the regulator and the main buss.
Output is 20 amp continuous I think I would try a 20A breaker and if you
start blowing it install a load meter and a 30A breaker. Under no
circumstances though load the alternator past 20A continuous duty
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Peter
Harris
Sent: Saturday, March 22, 2008 10:18 PM
Subject: RE: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Bob,
You are right about the excess current it is taken to earth at the base of
the regulator which should be mounted on a heat sink panel. AC output from
the PM alternator varies with RPM and the excess energy is bled off to earth
during the rectification/regulation process.
It sounds a bit primitive but it is simple and effective. Over voltage
protection is worthwile in case the regulator burns out.
Peter H
_____
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Sunday, 23 March 2008 2:47 AM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is the
controlling device associated with the Jabiru? Sounds like Evinrude has
done quite well!
The diodes I do understand. They were being discussed as the future when I
went through school and I have kept abreast of such development. All of the
principles mentioned are still the same as before, full wave rectification
and all, but I still do not have good handle on the voltage regulation fine
points. It appears as if they just sink excess current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls or
regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to good
advantage. It would be a shame to blow several thousand dollars worth of
electronics if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a description
of how the electricity is generated then how it's converted to DC via the
regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
_____
Create a Home Theater Like the Pros. Watch
<http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom0
0030000000001> the video on AOL Home.
http://www.matronics.com/contribution
Message 25
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|
| Subject: | Re: Wiring 3300 to an alternator switch |
The problem isn't in shutting down the line to the main buss... Damage to
the regulator can be done when you turn on the alternator to the buss during
heavy loads. If for some reason you want to shut down the output to the
buss in flight you should shed all load on the buss before reconnecting the
regulator output to the buss.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 10:54 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Evening Peter,
Thanks for the information.
Do most Jabiru operators use some sort of over voltage protection? Is there
a common method that has been successful?
As I am sure you can tell, my knowledge in this area is woefully inadequate.
Are there any good sources of data that I can study?
If a contactor was opened by a crowbar or other over voltage protection such
that it would save the electronics, would the alternator still be damaged or
is there some modality that would cause it to reduce it's output?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 7:51:24 P.M. Central Daylight Time,
peterjfharris@bigpond.com writes:
Bob,
You are right about the excess current it is taken to earth at the base of
the regulator which should be mounted on a heat sink panel. AC output from
the PM alternator varies with RPM and the excess energy is bled off to earth
during the rectification/regulation process.
It sounds a bit primitive but it is simple and effective. Over voltage
protection is worthwhile in case the regulator burns out.
Peter H
_____
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| Subject: | Re: Wiring 3300 to an alternator switch |
Printed and stuck in the manual!
Thanks Noel.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:46:47 P.M. Central Daylight Time,
noelloveys@yahoo.ca writes:
The regulator case itself should be a heat sink. In this case the regulator
actually workd as a transistor controlled voltage divider circuit. The fuse
link protects the battery and as I said I also recommend a switch or better
yet a circuit breaker between pin 5 of the regulator and the main buss.
Output is 20 amp continuous I think I would try a 20A breaker and if you start
blowing it install a load meter and a 30A breaker. Under no circumstances
though load the alternator past 20A continuous duty
Noel
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Home.
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| Subject: | Re: Wiring 3300 to an alternator switch |
Great! Have look at the list of revised pages which follows the table
of contents. It will give you a list of all the updated and added
pages... Saves wear and tear on the printer, paper and cartridges. You
may have to make notes of the different pages you will need and print
only those pages... The old pages can go in the bottom of the bird
cage.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Sunday, March 23, 2008 1:05 AM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Evening Noel,
I note that the one you googled is dated as revision 4. My copy is
revision 3 and I see that revision 4 shows all new pages!
I guess I will have to print a whole new manual. I wonder if they really
did revise every page or if they just decided to list all of them as
new? That's an awful lot of wasted paper!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:21:22 P.M. Central Daylight Time,
noelloveys@yahoo.ca writes:
I just googled jabiru Schematic and came up with this: (top of the
page!)
www.us
<http://www.usjabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf>
jabiru.com/images/pdf/manuals/new%20stuff/3300HL-IM.pdf
Everything you wanted to know about Jabiru engines and more besides...
Check out page 54 for a circuit diagram. That diagram shows the output
to the battery being switched ( Master) and protected by a fuse link.
The feed to the main buss is not switched or protected.... I=99d
recommend a breaker of at least the capacity of the alternator. Funny
on page 57 they say to hook up the battery direct... I don=99t
htink they looked at their own schematic and that=99s what
I=99d go by.
According to page 56 you can put a switch on the red wire that comes
from pin #5 on the voltage regulator and then feed the output of that
switch to the main buss.
A word of caution here the solid state ( lots of diodes and transistors)
rectifier/regulator may not be able to stand switching the alternator on
and off during normal flight so save turning off the line to the main
buss as an emergency procedure.
Noel
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobsV35B@aol.com
Sent: Saturday, March 22, 2008 2:17 PM
Subject: Re: JabiruEngine-List: Re: Wiring 3300 to an alternator switch
Good Morning Once Again Ron,
That information has been very helpful in directing me to some of the
problems I had wondered about. Do you have any idea how sophisticated is
the controlling device associated with the Jabiru? Sounds like Evinrude
has done quite well!
The diodes I do understand. They were being discussed as the future when
I went through school and I have kept abreast of such development. All
of the principles mentioned are still the same as before, full wave
rectification and all, but I still do not have good handle on the
voltage regulation fine points. It appears as if they just sink excess
current.
Sounds kinda hairy to those of us familiar with power conservationist
attitudes. My training was in the day of carbon pile regulators.
Thanks again, I now know that I can reference outboard motors for more
information.
Have you found any documentation that is specific to how Jabiru controls
or regulates the output?
Is there any sort of over voltage protection provided? While I am not
generally a fan of "Crow Bar" protection. this might be used here to
good advantage. It would be a shame to blow several thousand dollars
worth of electronics if a battery connection were to fail.
So much to be learned!!
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/22/2008 10:44:28 A.M. Central Daylight Time,
kc7hfa@totalusa.net writes:
I learned electronics many years ago, while in the military. I just
googled "permanent magnet regulator" and found this
http://continuouswave.com/whaler/reference/PMA.html it gives a
description of how the electricity is generated then how it's converted
to DC via the regulator... Hope it helps.
--------
Ron Asbill
N601ZX - CH-601 XL
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