Today's Message Index:
----------------------
1. 06:24 AM - batteries (thomas pekar)
2. 07:11 AM - missed post on smart fuse (Alexander Balic)
3. 07:12 AM - Re: batteries (Freddie Freeloader)
4. 07:13 AM - DC motor speed control (Alexander Balic)
5. 07:40 AM - Surplus electronics source list (richard@riley.net)
6. 09:06 AM - Re: batteries (Mark Steitle)
7. 09:31 AM - Re: Annunciator Panel on the cheap (Mark Phillips)
8. 09:40 AM - Re: batteries (Bill Steer)
9. 10:05 AM - Re: DC motor speed control (Mark Phillips)
10. 10:24 AM - Re: Annunciator Panel on the cheap (Robert L. Nuckolls, III)
11. 11:32 AM - Re: DC motor speed control (Jerzy Krasinski)
12. 04:52 PM - Re: Electrics/electronics education question (fellowsw)
13. 05:12 PM - KX170B/175B Install Manual (BobsV35B@aol.com)
14. 05:49 PM - Re: Re: Electrics/electronics education question (drew.schumann@us.army.mil)
15. 06:24 PM - Re: KX155 Squelch Question (Kent Ashton)
16. 07:57 PM - Re: batteries (mailbox bob at mail.flyboybob.com)
17. 10:32 PM - What does the OV light have to do with engine monitor (Werner Schneider)
Message 1
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--> AeroElectric-List message posted by: thomas pekar <niagaratom@yahoo.com>
Hi fellow flyers, i am readying my Eindecker 1 for test flight and have misplaced
the site addresses for the panasonic battery. there was also a site that did
a price comparison across several competing companies. i would greatly appreciate
if some kind soul could pass that along.We are enjoying the Zenith 200 and
am working on the don't spill the scalding cup of mcDonalds coffee on your
crotch technique of landing. Hope to see some of you at Dayton for the Great
War Flyin in September, tom pekar
---------------------------------
Message 2
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| Subject: | missed post on smart fuse |
--> AeroElectric-List message posted by: Alexander Balic <alex157@direcway.com>
does anyone have any advice on the "smart Fuse" it is the one that has a
little indicator light to show if it has blown (but only if the load is
still attached) I posted about this about a week ago, but must have missed
the reply about it- they seem to be useful for trouble shooting, the only
slight drawback I can see is that there will still be a tiny amount of
current in the shorted circuit since the indicator light on the fuse needs
to ground ( through the original circuit) to work.....
Message 3
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--> AeroElectric-List message posted by: Freddie Freeloader <lists@stevet.net>
Hello thomas,
Tuesday, July 22, 2003, 6:23:47 AM, you wrote:
tp> Hi fellow flyers, i am readying my Eindecker 1 for test flight and have misplaced
the site addresses for the panasonic battery. there was also a site that
did a price comparison across several
tp> competing companies. i would greatly appreciate if some kind soul could pass
that along.We are enjoying the Zenith 200 and am working on the don't spill
the scalding cup of mcDonalds coffee on
tp> your crotch technique of landing. Hope to see some of you at Dayton for the
Great War Flyin in September, tom pekar
I have these two links. I hope that gives you what you need.
http://216.55.140.222/temp/lc-rd1217p.pdf
http://www.mdsbattery.com/shop/productprofile.asp?ProductGroupID=1059
--
Best regards,
Freddie mailto:lists@stevet.net
Message 4
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| Subject: | DC motor speed control |
--> AeroElectric-List message posted by: Alexander Balic <alex157@direcway.com>
I was watching the posts on the modulation speed control for the fan as an
alternative to a resistor, and I would like to explore the same solution to
adjust the speed on my fuel pumps, does anyone have a source for such a
controller? or a schematic to make one?
Message 5
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| Subject: | Surplus electronics source list |
--> AeroElectric-List message posted by: richard@riley.net
I just found an interesting source list for surplus, and thought I'd pass
it on.
http://www.pacificsites.com/~brooke/MSD.shtml
Message 6
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--> AeroElectric-List message posted by: Mark Steitle <msteitle@mail.utexas.edu>
At 06:23 AM 7/22/2003 -0700, you wrote:
>--> AeroElectric-List message posted by: thomas pekar <niagaratom@yahoo.com>
>
>Hi fellow flyers, i am readying my Eindecker 1 for test flight and have
>misplaced the site addresses for the panasonic battery. there was also a
>site that did a price comparison across several competing companies. i
>would greatly appreciate if some kind soul could pass that along.We are
>enjoying the Zenith 200 and am working on the don't spill the scalding cup
>of mcDonalds coffee on your crotch technique of landing. Hope to see some
>of you at Dayton for the Great War Flyin in September, tom pekar
Tom,
I recently found what I feel is a good source, with good price, on the 17AH
RG battery for $54.99. The url is www.pegasusautoracing.com or you can go
directly to page 44 of their online catalog at
http://www.pegasusautoracing.com/pdfs/044.pdf
I have now done enough business with this company to be willing to
recommend them to others. They have a policy of same-day-shipping,
whenever possible. Everything I have ordered has arrived promptly and was
of the highest quality. Haven't had the opportunity of returning anything,
so I can't vouch for their return policy.
Mark S.
Austin, TX
Message 7
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| Subject: | Re: Annunciator Panel on the cheap |
--> AeroElectric-List message posted by: Mark Phillips <ripsteel@edge.net>
Thanks for the clarification- same LR3, multiple ways to utilize its lamp
function.
Another question based on the LV_Led drawing, you show 220 ohm in series
with the single LED for over 60mA LED current- does some current shunt
through the parallel resistor holding LED current to an acceptable level
when the lamp transistor turns on or are you seriously overdriving it?
(sorry- just can't grok this series/parallel stuff!)
I am using your LVMM (without the parallel resistor) and a 240 ohm
resistor to overdrive the 3 series-connected LEDs in the block to about
30mA. Neville is using LED blocks with 5 LEDs in them, which should
require much smaller resistor values, particularly if using the parallel
resistor.
On his application, what resistor values would he use, assuming all 5
LEDs are series connected in place of the single one shown in the drawing?
Thanks again-
Mark
>
> I published a circuit for adapting a single LED to the output
> of the LR3 at:
> http://216.55.140.222/temp/LV_Led.jpg
> The LR3 lamp driver is an open collector, pull-down NPN
> with a leakage resistor added so that the lv warn light
> will illuminate should the LR3 loose power needed to
> keep circuitry active. This is a sort of fail-safe
> feature but it will cause enough leakage to keep an
> LED dimly lit when it should be OFF. Hence the
> resistor network on the LED to make it look more
> like an incandescent bulb.
>
>
>
>
Message 8
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--> AeroElectric-List message posted by: "Bill Steer" <bsteer@gwi.net>
I agree. I've ordered several components from Pegasus. They've shipped
promptly, orders were accurately filled, price was right, components were high
quality, etc.
Bill
> RG battery for $54.99. The url is www.pegasusautoracing.com or you can go
> directly to page 44 of their online catalog at
> http://www.pegasusautoracing.com/pdfs/044.pdf
>
> I have now done enough business with this company to be willing to
> recommend them to others. They have a policy of same-day-shipping,
> whenever possible. Everything I have ordered has arrived promptly and was
> of the highest quality. Haven't had the opportunity of returning anything,
> so I can't vouch for their return policy.
Message 9
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| Subject: | Re: DC motor speed control |
--> AeroElectric-List message posted by: Mark Phillips <ripsteel@edge.net>
Hi Alex-
Might want to look at this- $16 & 10 amps:
http://www.mpja.com/productview.asp?product=4057+MD
I built one to use as a dimmer and it very nicely controlled the speed
of the motor included in the kit (easy to assemble)
Curious as to speed control for the pumps?
Mark
Alexander Balic wrote:
> --> AeroElectric-List message posted by: Alexander Balic <alex157@direcway.com>
>
> I was watching the posts on the modulation speed control for the fan as an
> alternative to a resistor, and I would like to explore the same solution to
> adjust the speed on my fuel pumps, does anyone have a source for such a
> controller? or a schematic to make one?
>
>
>
>
>
>
>
>
Message 10
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| Subject: | Re: Annunciator Panel on the cheap |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 11:30 AM 7/22/2003 -0600, you wrote:
>--> AeroElectric-List message posted by: Mark Phillips <ripsteel@edge.net>
>
>Thanks for the clarification- same LR3, multiple ways to utilize its lamp
>
>function.
>
>Another question based on the LV_Led drawing, you show 220 ohm in series
>with the single LED for over 60mA LED current- does some current shunt
>through the parallel resistor holding LED current to an acceptable level
>when the lamp transistor turns on or are you seriously overdriving it?
>(sorry- just can't grok this series/parallel stuff!)
Under low volts conditions, bus voltage is 12.5 volts.
LED voltage is about 2 volts. Therefore, current through
series resistor is 10.5/220 or 47 mA. 2/220 is 9 mA so
this leaves 38 or so to pass though the LED . . . a slight
overdrive.
>I am using your LVMM (without the parallel resistor) and a 240 ohm
>resistor to overdrive the 3 series-connected LEDs in the block to about
>30mA. Neville is using LED blocks with 5 LEDs in them, which should
>require much smaller resistor values, particularly if using the parallel
>resistor.
12.5 - (3 x 2) = 6.5 volts across resistor. 6.5/240 is indeed
about 27 mA.
>On his application, what resistor values would he use, assuming all 5
>LEDs are series connected in place of the single one shown in the drawing?
I'd go a string of 3 leds in series, paralleled with 2 leds in series
each series string having its own ballasting resistor. 5 LED drop
too much voltage to give you adequate indication intensity all the way
down to battery-depleted levels of 10.5 volts.
Bob . . .
Message 11
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| Subject: | Re: DC motor speed control |
--> AeroElectric-List message posted by: Jerzy Krasinski <krasinski@direcway.com>
Alexander Balic wrote:
>--> AeroElectric-List message posted by: Alexander Balic <alex157@direcway.com>
>
>I was watching the posts on the modulation speed control for the fan as an
>alternative to a resistor, and I would like to explore the same solution to
>adjust the speed on my fuel pumps, does anyone have a source for such a
>controller? or a schematic to make one?
>
>
Alexander,
Check EBAY. I saw many low voltage DC motor controllers there.
Jerzy
>
>
Message 12
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| Subject: | Electrics/electronics education question |
--> AeroElectric-List message posted by: "fellowsw" <fellows.w@ewcapital.net>
I don't know how practical it is where you are but I would recommend the Art
of Electronics book by Horowitz & Hill and the accompanying lab book by
Hayes and one of the book authors. You can buy the books through Amazon. The
lab book has a complete list of the required equipment and components for
the lab course. If you can find a scope, function generator, dmm and logic
probe there, the rest of the equipment and components are reasonable. The
first half of the course is analog and the second half is digital where you
build a computer on a breadboard. The course is designed for physicists
making electronic projects for experiments and is very practical. They do
not spend a lot of time on theory. You can get most of the components in one
order from Digikey and one from Newark Electronics.
I looked at the Naval Electronics course posted here in the past, fairly
complete but it is too old fashioned and has many unnecessary side trips for
me.
Walter Fellows
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
drew.schumann@us.army.mil
Subject: AeroElectric-List: Electrics/electronics education question
--> AeroElectric-List message posted by: drew.schumann@us.army.mil
I am a new listmember and a new A&P. I was hired by a local airport, in the
hopes that I could "grow into" the job, and become an avionics technician as
well. After four weeks on the job, I was called to active duty and am
currently in Iraq. As a result of my MOS not being in very big demand, I
have a lot of spare time, and I'd like to make the maximum use of that time.
I am currently studying for my FCC General license using a pre-programmed
curriculum and have a good theoretical knowledge of electricity/electronics,
but what I lack is actual experience.
So. My question to the list, is, "What would be a good way to gain
experience with electronic stuff, having rather limited access to equipment
I can actually touch a mess with?" I've rewired a couple fans with burned
out computer chips (computer chips, in a fan?????) and troubleshot/cleaned
up/resoldered connection in a captured Iraqi mine detector, but I'd like
something a little more systematic and all-encompassing. Would it be a good
idea to get one of those 101 or 1001 experiments in electricity/electronics?
Or maybe buy some plans/kits from radio shack? I'm handicapped by not being
able to visit the local mall every time I need a diode or somesuch. Can
anyone recommend a good kit or experiment set?
Anything that will reinforce the books I'm reading would be fine. Thank you
for being understanding. It seems like everyone is so incredibly
understanding. From my boss (who has given me a shot at being able to do
what I love, 20 miles from my current home) to the fine folks back in the
states that send letters of support and care packages.
Thank you,
Drew
Message 13
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| Subject: | KX170B/175B Install Manual |
--> AeroElectric-List message posted by: BobsV35B@aol.com
Good Evening All,
Does anyone know if there is any place on the web where I could read a copy
of the Allied Signal, (King) KX-170B/175B Installation Manual.
I have a partial copy, but the page I think I need is missing.
The manual is number 006-0085-01. The page I am reading 3-2. The other side,
which I think should be 3-3, is blank.
The paragraph I am reading is titled:
3.3 POST INSTALLATION CHECKOUT
It has information telling how to conduct the inflight check of the
equipment, but I think it may not be complete. I would like to look at page 3.3
to see
if it is continued there.
Any ideas?
Happy Skies,
Old Bob
Message 14
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| Subject: | Re: Electrics/electronics education question |
--> AeroElectric-List message posted by: drew.schumann@us.army.mil
Thank you. I will look into this.
Drew
----- Original Message -----
From: fellowsw <fellows.w@ewcapital.net>
Subject: RE: AeroElectric-List: Electrics/electronics education question
> --> AeroElectric-List message posted by: "fellowsw"
> <fellows.w@ewcapital.net>
> I don't know how practical it is where you are but I would
> recommend the Art
> of Electronics book by Horowitz & Hill and the accompanying lab
> book by
> Hayes and one of the book authors. You can buy the books through
> Amazon. The
> lab book has a complete list of the required equipment and
> components for
> the lab course. If you can find a scope, function generator, dmm
> and logic
> probe there, the rest of the equipment and components are
> reasonable. The
> first half of the course is analog and the second half is digital
> where you
> build a computer on a breadboard. The course is designed for
> physicistsmaking electronic projects for experiments and is very
> practical. They do
> not spend a lot of time on theory. You can get most of the
> components in one
> order from Digikey and one from Newark Electronics.
>
> I looked at the Naval Electronics course posted here in the past,
> fairlycomplete but it is too old fashioned and has many
> unnecessary side trips for
> me.
>
> Walter Fellows
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [owner-aeroelectric-list-server@matronics.com] On Behalf Of
> drew.schumann@us.army.mil
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Electrics/electronics education question
>
> --> AeroElectric-List message posted by: drew.schumann@us.army.mil
>
> I am a new listmember and a new A&P. I was hired by a local
> airport, in the
> hopes that I could "grow into" the job, and become an avionics
> technician as
> well. After four weeks on the job, I was called to active duty
> and am
> currently in Iraq. As a result of my MOS not being in very big
> demand, I
> have a lot of spare time, and I'd like to make the maximum use of
> that time.
> I am currently studying for my FCC General license using a pre-
> programmedcurriculum and have a good theoretical knowledge of
> electricity/electronics,but what I lack is actual experience.
>
> So. My question to the list, is, "What would be a good way to gain
> experience with electronic stuff, having rather limited access to
> equipmentI can actually touch a mess with?" I've rewired a couple
> fans with burned
> out computer chips (computer chips, in a fan?????) and
> troubleshot/cleanedup/resoldered connection in a captured Iraqi
> mine detector, but I'd like
> something a little more systematic and all-encompassing. Would it
> be a good
> idea to get one of those 101 or 1001 experiments in
> electricity/electronics?Or maybe buy some plans/kits from radio
> shack? I'm handicapped by not being
> able to visit the local mall every time I need a diode or
> somesuch. Can
> anyone recommend a good kit or experiment set?
>
> Anything that will reinforce the books I'm reading would be fine.
> Thank you
> for being understanding. It seems like everyone is so incredibly
> understanding. From my boss (who has given me a shot at being
> able to do
> what I love, 20 miles from my current home) to the fine folks back
> in the
> states that send letters of support and care packages.
>
> Thank you,
>
> Drew
>
>
> _-
> _-
> _-
> _-
> ======================================================================
>
>
>
>
Message 15
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| Subject: | Re: KX155 Squelch Question |
--> AeroElectric-List message posted by: Kent Ashton <kjashton@vnet.net>
My spec sheet for the KX-155 (pretty new one) says "automatic squelch with
manual override". My KX-155 is quiet when the volume knob is pushed in.
Sounds like you've got a defective auto-squelch system.
--Kent
> From: N223RV@aol.com
> Reply-To: aeroelectric-list@matronics.com
> Date: Tue, 22 Jul 2003 00:00:38 EDT
> To: aeroelectric-list@matronics.com, rv-list@matronics.com
> Subject: AeroElectric-List: KX155 Squelch Question
>
> --> AeroElectric-List message posted by: N223RV@aol.com
>
>
> I installed some electronics in my airplane, and it now appears that it is
> causing some interference in my radio. In particular it seems to act just
> like
> the squelch needs to be adjusted on the radio, although I cannot find any
> squelch adjustment. I have King KX-155, it has a pull to test (volume knob),
> but
> that does not adjust the squelch. When I transmit or the tower calls out, the
> radio is clear and fine, but when there is no transmissions, there is a ton
> of 'white noise' or static. The noise is exactly the same sound and loudness
> as when I pull to test on the volume knob. It appears to work fine on some
> frequencies, but not on all frequencies.
>
> I have adjusted the squelch on the intercom, but it just appears to set the
> level for the voice activation on the mic, not on the radio. To me it seems
> like I need to adjust the squelch. Is that possible on a KX155, I have an
> older
> radio that is out of warranty so I am not afraid to open it up if there is a
> potentiometer or some way to adjust it.
>
> Any advice would be greatly appreciated.
> Mike Kraus
> RV-4, flying and now painted!
>
>
>
>
>
>
Message 16
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--> AeroElectric-List message posted by: "mailbox bob at mail.flyboybob.com" <bob@flyboybob.com>
'Lectric Heads,
I was on DigiKey's web site looking for some connectors for a project I'm
working on and stumbled across a great deal on batteries. If you're looking
for an RG battery, check with DigiKey. Their price for the Panasonic
LC-RD1217P (12Volt 17AH) battery is $36.23 for quantity 1-3 and $31.05 for
quantity 4-179. MDS' price for the same battery is $58.00. Pegasus Auto
Racing offers a 12Volt 17AH battery by Storage Battery Systems Inc. for
$54.99. Looks like DigiKey is today's best price.
Regards,
Bob Lee
______________________________
N52BL KR2 Suwanee, GA 30024
91% done only 51% to go!
Phone/Fax: 770/844-7501
mailto:bob@flyboybob.com
http://flyboybob.com
Message 17
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| Subject: | What does the OV light have to do with engine monitor |
--> AeroElectric-List message posted by: "Werner Schneider" <wernerschneider@compuserve.com>
Hello Everybody,
Monday was the first time I've powered up my panel, did put up part by part
by adding fuse after fuse. The good thing, no smoke! I had one or two
mistakes to correct and a non functioning oil pressure switch. What puzzeled
me was the readout of the engine monitor temps which showed powered from
e-bus only, normal 25 deg C, but powered from the main bus via diode came
down to 3 deg C for CHT.
I've started to shut down item after item and shutting off the OV light
brought the temps back to normal.
I have an LR-3B, just instead of the inasendent bulb I have a LED with the
two resistors according Bob's layout, which works perfect.
Any idea what could causing this behaviour? BTW engine is not running during
this test and OV light is on the main bus, engine monitor on the e-bus.
Thankful for any idea.
Many thanks
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