Today's Message Index:
----------------------
1. 02:00 AM - Skymap IIIc Install manual (Richard Garforth)
2. 06:29 AM - Remote ELT Battery Change Timing (John Markey)
3. 06:34 AM - Re: "Flicker Filter" for low fuel warning float switches? (Fiveonepw@aol.com)
4. 06:46 AM - Waxed lacing cord techniques? (Steve Ruse)
5. 07:14 AM - Re: Off Subject-Power meter calibration (Dave Morris \)
6. 07:19 AM - Re: Waxed lacing cord techniques? (Steve Ruse)
7. 07:21 AM - Re: "Flicker Filter" for low fuel warning float switches? (Dave Morris \)
8. 07:26 AM - Re: Waxed lacing cord techniques? (Pat Hatch)
9. 07:42 AM - Re: "Flicker Filter" for low fuel warning float switches? (Robert L. Nuckolls, III)
10. 07:42 AM - OV Module (Ron)
11. 08:34 AM - Re: Waxed lacing cord techniques? (Pat Hatch)
12. 08:37 AM - Re: MD200-306 VOR/ILS Indicator (John Schroeder)
13. 08:56 AM - Re: "Flicker Filter" for low fuel warning float switches? (Robert L. Nuckolls, III)
14. 09:07 AM - Re: OV Module (Robert L. Nuckolls, III)
15. 09:19 AM - Re: OV Module (Robert L. Nuckolls, III)
16. 10:27 AM - Re: Re: "Flicker Filter" for low fuel warning float switches? (Dave Morris \)
17. 10:49 AM - Re: Re: EV200 Conducted emissions (Gilles Thesee)
18. 11:40 AM - e-mags/p-mags (Erich_Weaver@URSCorp.com)
19. 12:46 PM - Re: "Flicker Filter" for low fuel warning float switches? (Dr. Peter Laurence)
20. 01:17 PM - Re: "Flicker Filter" for low fuel warning float switches? (Robert L. Nuckolls, III)
21. 01:19 PM - Re: Re: EV200 Conducted emissions (Robert L. Nuckolls, III)
22. 02:14 PM - Microswitch (Mark R. Supinski)
23. 02:36 PM - Voltage regulator (David Shani)
24. 03:37 PM - ELT Remote Gotcha (PeterHunt1@aol.com)
25. 03:37 PM - Re: Microswitch (Robert L. Nuckolls, III)
26. 05:11 PM - Re: "Flicker Filter" for low fuel warning float switches? (Jerry Fisher)
27. 05:16 PM - Re: Skymap IIIc Install manual (Chris Good)
28. 06:27 PM - Re: "Flicker Filter" for low fuel warning float switches? (Dan Beadle)
29. 08:56 PM - Re: "Flicker Filter" for low fuel warning float switches? (Keith Hallsten)
30. 11:52 PM - GRT/Lightspeed/Mags (Allan Aaron)
Message 1
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| Subject: | Skymap IIIc Install manual |
--> AeroElectric-List message posted by: "Richard Garforth" <richard@hawk.flyer.co.uk>
I am trying to source a link to a maintenance/install manual for a Skymap IIIc
so I can change the internal lithium battery. Can anyone help please ??
Richard
Message 2
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| Subject: | Remote ELT Battery Change Timing |
--> AeroElectric-List message posted by: John Markey <markeypilot@yahoo.com>
The Ameri-King AK-450 ELT I have requires 2 hearing aid sized silver oxides to
be replaced about every 5-7 years in the panel remote switch. It looks like these
batteries power the led ON-indicator if the unit is switched ON either by
a "good" landing or an accidental pushing on the remote ON-switch. The black remote
must come out to unscrew the case to get to the batteries.The Ameri-King
sight mentions the 4 D-cells needed for the ELT but not the little button batteries
for the remote.
John Markey
Vern wrote:
--> AeroElectric-List message posted by: rv-9a-online
<rv-9a-online@telus.net>
In the last two weeks, every builder I talked to (including an inspector) was not
aware that most ELT remotes require a battery to operate.
No big deal, you think? Well, it is if you've mounted the ELT remote
on your panel and have no way to access the battery.
So, be forewarned... ensure you can easily remove the ELT remote to
insert/change the battery. I can access mine by removing my GPS, but a
friend of mine building a SeaStar would have had a lot of trouble if I
hadn't pointed it out.
Vern Little
---------------------------------
Message 3
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: Fiveonepw@aol.com
In a message dated 1/23/06 12:03:50 AM Central Standard Time,
nuckollsr@cox.net writes:
> I have hardware in hand that can be programmed to accomplish
> this task. We can watch for switch behavior to exhibit
> some characteristic like "switch closed more than 50% of the time
> over a 1 minute period" before the warning light is latched
> on. Given the flexibility of software, we can probably address
> any other low-fuel trip protocol. Does anyone have a need for
> this capability?
>>>>>
I used a couple of Altronix 6062 timer boards suggested by John P. Marzluf
several years ago- they perform fine, but your solution is likely a more elegant
way to accomplish this.
Here's a message from archives:
http://www.matronics.com/searching/getmsg_script.cgi?INDEX=17746345?KEYS=outback?LISTNAME=AeroElectric?HITNUMBER=84?SERIAL=0627595069?SHOWBUTTONS=YES
and my implementation of them:
http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5003
They are the blue boards on the tray.
Would like to see what ya got in mind, Bob- probably something about the size
of a postage stamp, no doubt...
Mark Phillips
Message 4
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| Subject: | Waxed lacing cord techniques? |
--> AeroElectric-List message posted by: Steve Ruse <steve@wotelectronics.com>
I am adding an intercom to my plane (a Pietenpol), and want to re-do all of the
wiring harnesses (not very many in a Pietenpol). I gave it a shot last night,
but after my first go at it, I think there are probably some techniques for
knots that I don't know. Can anyone point me to a "how to" site, or give me
some tips on knot tying? How many knots per foot is typical? I think mine
will hold, but there is probably a better way to do it.
Thanks for any tips!
Steve Ruse
N6383J - Norman, OK
Message 5
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| Subject: | Re: Off Subject-Power meter calibration |
--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
If you think it's not calibrated because you got an astronomically high
electric bill last month, join the crowd.
Dave Morris
At 04:23 PM 1/22/2006, you wrote:
>--> AeroElectric-List message posted by: <bbradburry@allvantage.com>
>
>Sorry about being off subject, but does anyone know how the power meter on a
>residence could be checked for calibration? The power company tells me not
>to worry...The meter is correct...HA!
>I am pretty certain that is not true.
>
>Also I wonder if the new radio reporting meters can have their calibration
>changed via radio???
>
>Thanks for any assistance..
>
>BB Shott from Vinita
>
>
Message 6
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| Subject: | Re: Waxed lacing cord techniques? |
--> AeroElectric-List message posted by: Steve Ruse <steve@wotelectronics.com>
I should have done a little more searching before I posted. I found this link
to a copy of a tutorial from the Bureau of Naval Weapons, circa 1962. Seems
like pretty good information, I figured someone else might be interested too:
http://www.dairiki.org/hammond/cable-lacing-howto/
I'm still interested in anyone's comments.
Steve
Quoting Steve Ruse <steve@wotelectronics.com>:
> --> AeroElectric-List message posted by: Steve Ruse
> <steve@wotelectronics.com>
>
> I am adding an intercom to my plane (a Pietenpol), and want to re-do
> all of the
> wiring harnesses (not very many in a Pietenpol). I gave it a shot
> last night,
> but after my first go at it, I think there are probably some techniques for
> knots that I don't know. Can anyone point me to a "how to" site, or give me
> some tips on knot tying? How many knots per foot is typical? I think mine
> will hold, but there is probably a better way to do it.
>
> Thanks for any tips!
>
> Steve Ruse
> N6383J - Norman, OK
Message 7
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
float switches?
Bob, I have a switch float in my header tank that I use to control the pump
that feeds the header. (Other Dragonfly builders manually switch the pump
on and off, watching a big red light, and install a huger overflow tube.)
I was planning to install a 1 minute timer, so that when the float
indicates a full tank, the pump switches off for 1 solid minute, before
being allowed to come on again (if the float indicates it's time to run
again). Basically a kind of debounce circuit. I think that can be done
with a simple 555 circuit or even some of the off-the-shelf timer kits from
QKits.
Dave Morris
At 12:00 AM 1/23/2006, you wrote:
>--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
><nuckollsr@cox.net>
>
>Some months ago, someone was asking about a circuit to
>make the float-switches in their airplane be a bit more
>definitive as to when the low fuel warning light was
>illuminated.
>
>I have hardware in hand that can be programmed to accomplish
>this task. We can watch for switch behavior to exhibit
>some characteristic like "switch closed more than 50% of the time
>over a 1 minute period" before the warning light is latched
>on. Given the flexibility of software, we can probably address
>any other low-fuel trip protocol. Does anyone have a need for
>this capability?
>
>
> Bob . . .
>
>
> < What is so wonderful about scientific truth...is that >
> < the authority which determines whether there can be >
> < debate or not does not reside in some fraternity of >
> < scientists; nor is it divine. The authority rests >
> < with experiment. >
> < --Lawrence M. Krauss >
> http://www.aeroelectric.com
>
>
Message 8
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| Subject: | Waxed lacing cord techniques? |
--> AeroElectric-List message posted by: "Pat Hatch" <pat_hatch@msn.com>
Steve,
I haven't seen any responses to this, so you might want to look at AC
43.13-1B, there is a section on typing knots for wire bundles. I also think
Bob Nuckolls might have a comic book somewhere on his site that shows the
technique at
www.aeroelectric.com
Hope this helps.
Pat Hatch
RV-6
RV-7
Subject: AeroElectric-List: Waxed lacing cord techniques?
--> AeroElectric-List message posted by: Steve Ruse
<steve@wotelectronics.com>
I am adding an intercom to my plane (a Pietenpol), and want to re-do all of
the
wiring harnesses (not very many in a Pietenpol). I gave it a shot last
night,
but after my first go at it, I think there are probably some techniques for
knots that I don't know. Can anyone point me to a "how to" site, or give me
some tips on knot tying? How many knots per foot is typical? I think mine
will hold, but there is probably a better way to do it.
Thanks for any tips!
Steve Ruse
N6383J - Norman, OK
Message 9
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 09:33 AM 1/23/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: Fiveonepw@aol.com
>
>In a message dated 1/23/06 12:03:50 AM Central Standard Time,
>nuckollsr@cox.net writes:
>
> > I have hardware in hand that can be programmed to accomplish
> > this task. We can watch for switch behavior to exhibit
> > some characteristic like "switch closed more than 50% of the time
> > over a 1 minute period" before the warning light is latched
> > on. Given the flexibility of software, we can probably address
> > any other low-fuel trip protocol. Does anyone have a need for
> > this capability?
>
> >>>>>
>
>I used a couple of Altronix 6062 timer boards suggested by John P. Marzluf
>several years ago- they perform fine, but your solution is likely a more
>elegant
>way to accomplish this.
>
>Here's a message from archives:
>
>http://www.matronics.com/searching/getmsg_script.cgi?INDEX=17746345?KEYS=outback?LISTNAME=AeroElectric?HITNUMBER=84?SERIAL=0627595069?SHOWBUTTONS=YES
>
>and my implementation of them:
>
>http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5003
>
>They are the blue boards on the tray.
>
>Would like to see what ya got in mind, Bob- probably something about the size
>of a postage stamp, no doubt...
A little bigger than a postage stamp, but not much. See:
http://www.aeroelectric.com/Catalog/AEC/9011/9011-700-1.pdf
This is one of several products that will be supplied in this
package. The circuitry is processor based so it can be 'taught'
to do a variety of things. In the case of the AEC9011, we're
doing an LV/OV controller for the Chinese CJ6 trainer. Seems
folks are suffering some expensive OV events. The 9011 with
different software could be a flicker filter for low fuel
switches . . . and perhaps a variety of other tasks.
In a concentrated effort to increase commonality of hardware,
packaging, and fabrication techniques for a line of products,
we're going the software route as much as possible. This is
the only way I can see to keep costs down and still offer
a variety of capabilities in both stock and custom products when
the volumes are so low.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
Message 10
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--> AeroElectric-List message posted by: "Ron" <rondefly@rtriano.com>
Hi, Could someone please point me in the right direction on the parts needed
for the OV Module, My question is on the Potentiometer R2, the parts list
calls it out as
3292W501, DigiKey has no such number. I am not electronically qualified to
guess at what it is.
Thanks
Ron Triano
http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page10.html
Message 11
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| Subject: | Waxed lacing cord techniques? |
--> AeroElectric-List message posted by: "Pat Hatch" <pat_hatch@msn.com>
Steve,
Good information...here is the link to Bob's comic book on lacing:
http://www.aeroelectric.com/articles/cable_lace/cable_lace.html
And here is the link to AC 43.13-1B from Bob's web site:
http://www.aeroelectric.com/Reference_Docs/FAA
Just my opinion, but I believe this information is a little more current.
Pat Hatch
RV-6
RV-7
--> AeroElectric-List message posted by: Steve Ruse
<steve@wotelectronics.com>
I should have done a little more searching before I posted. I found this
link
to a copy of a tutorial from the Bureau of Naval Weapons, circa 1962. Seems
like pretty good information, I figured someone else might be interested
too:
http://www.dairiki.org/hammond/cable-lacing-howto/
Message 12
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| Subject: | Re: MD200-306 VOR/ILS Indicator |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Dean -
We wired a lead from the dimmer buss to pin 23 of the MD200 (12 volt
system). Works fine to dim the instrument.
John
On Sun, 22 Jan 2006 23:50:12 -0500, DEAN PSIROPOULOS
<dean.psiropoulos@verizon.net> wrote:
> --> AeroElectric-List message posted by: "DEAN PSIROPOULOS"
> <dean.psiropoulos@verizon.net>
>
> I have a VOR/ILS indicator made by Mid Content Instruments (MD200-306)
> and I
> am trying to figure out if it is lighted internally or if I need to
> supply
> some sort of lighting.
Message 13
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 09:19 AM 1/23/2006 -0600, you wrote:
>--> AeroElectric-List message posted by: "Dave Morris \"BigD\""
><BigD@DaveMorris.com> float switches?
>
>Bob, I have a switch float in my header tank that I use to control the pump
>that feeds the header. (Other Dragonfly builders manually switch the pump
>on and off, watching a big red light, and install a huger overflow tube.)
>
>I was planning to install a 1 minute timer, so that when the float
>indicates a full tank, the pump switches off for 1 solid minute, before
>being allowed to come on again (if the float indicates it's time to run
>again). Basically a kind of debounce circuit. I think that can be done
>with a simple 555 circuit or even some of the off-the-shelf timer kits from
>QKits.
>
>Dave Morris
No doubt this is true. But one of the things I've noticed is that
the majority of OBAM aircraft builders are more interested in
turn-key solutions all packaged up with nice mounting bases and
d-sub connectors on the front. It also helps if they are small
and environmentally robust.
For individuals with a hanker'n to sling some solder and build
an enclosure to hold it, there are countless variations
on a theme that will do the task.
My goal is to craft a series of low cost packages that can
be taught to do a variety of tasks so that we don't re-invent
the whole wheel for each new task. A further goal is to offer
packages that are as flight-worthy as anything I would do
for a certified a/c customer.
If successful in this endeavor, the guy who is thinking about
ordering up a bag of parts and heating up the iron will be hard
pressed to show a return on investment (beyond the entertainment/
educational value) for rolling his own when versatile, low cost,
and robust solutions are becoming almost catalog items.
Bob . . .
Message 14
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 07:41 AM 1/23/2006 -0800, you wrote:
>--> AeroElectric-List message posted by: "Ron" <rondefly@rtriano.com>
>
>Hi, Could someone please point me in the right direction on the parts needed
>for the OV Module, My question is on the Potentiometer R2, the parts list
>calls it out as
>
>3292W501, DigiKey has no such number. I am not electronically qualified to
>guess at what it is.
I'm glad you posted this note. The search phrase to find it in Digikey
is 3192W-501. I'm pleased that this error was called to my attention
because it highlights another more serious error on my part. The 3292 series
pots are unnecessarily expensive (15.00/ea!) for this task. I'm going to
change the call-out to a 3296W-501 for $2.70 each in single lots.
Appreciate the heads-up on this!
Bob . . .
Message 15
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 11:07 AM 1/23/2006 -0600, you wrote:
>--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
><nuckollsr@cox.net>
>
>At 07:41 AM 1/23/2006 -0800, you wrote:
>
> >--> AeroElectric-List message posted by: "Ron" <rondefly@rtriano.com>
> >
> >Hi, Could someone please point me in the right direction on the parts needed
> >for the OV Module, My question is on the Potentiometer R2, the parts list
> >calls it out as
> >
> >3292W501, DigiKey has no such number. I am not electronically qualified to
> >guess at what it is.
>
> I'm glad you posted this note. The search phrase to find it in Digikey
> is 3192W-501. I'm pleased that this error was called to my attention
> because it highlights another more serious error on my part. The 3292
> series
> pots are unnecessarily expensive (15.00/ea!) for this task. I'm going to
> change the call-out to a 3296W-501 for $2.70 each in single lots.
>
> Appreciate the heads-up on this!
The drawing has been fixed and Rev D posted at:
http://aeroelectric.com/articles/Crowbar_OV_Protection/Crowbar_D.pdf
Bob . . .
Message 16
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| Subject: | Re: "Flicker Filter" for low fuel warning float |
switches?
--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
warning float switches?
Oh, I totally agree on that. In fact, if you whip one up, I'll probably
buy it too, because it saves me some time, which I find I don't have nearly
enough of.
Dave Morris
At 10:54 AM 1/23/2006, you wrote:
>--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
><nuckollsr@cox.net>
>
>At 09:19 AM 1/23/2006 -0600, you wrote:
>
> >--> AeroElectric-List message posted by: "Dave Morris \"BigD\""
> ><BigD@DaveMorris.com> float switches?
> >
> >Bob, I have a switch float in my header tank that I use to control the pump
> >that feeds the header. (Other Dragonfly builders manually switch the pump
> >on and off, watching a big red light, and install a huger overflow tube.)
> >
> >I was planning to install a 1 minute timer, so that when the float
> >indicates a full tank, the pump switches off for 1 solid minute, before
> >being allowed to come on again (if the float indicates it's time to run
> >again). Basically a kind of debounce circuit. I think that can be done
> >with a simple 555 circuit or even some of the off-the-shelf timer kits from
> >QKits.
> >
> >Dave Morris
>
> No doubt this is true. But one of the things I've noticed is that
> the majority of OBAM aircraft builders are more interested in
> turn-key solutions all packaged up with nice mounting bases and
> d-sub connectors on the front. It also helps if they are small
> and environmentally robust.
>
> For individuals with a hanker'n to sling some solder and build
> an enclosure to hold it, there are countless variations
> on a theme that will do the task.
>
> My goal is to craft a series of low cost packages that can
> be taught to do a variety of tasks so that we don't re-invent
> the whole wheel for each new task. A further goal is to offer
> packages that are as flight-worthy as anything I would do
> for a certified a/c customer.
>
> If successful in this endeavor, the guy who is thinking about
> ordering up a bag of parts and heating up the iron will be hard
> pressed to show a return on investment (beyond the entertainment/
> educational value) for rolling his own when versatile, low cost,
> and robust solutions are becoming almost catalog items.
>
> Bob . . .
>
>
Message 17
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| Subject: | Re: RE: EV200 Conducted emissions |
--> AeroElectric-List message posted by: Gilles Thesee <Gilles.Thesee@ac-grenoble.fr>
>>I'm not sure what kind of
>>interference, but I suspect conducted interference on the coil energizing
>>line spreading into other sensitive audio circuits.
>>....
>>
>>
>.... I'll see if I can take a quick peek at conducted
> emissions for this critter. If I can't find it, maybe the Tyco guys
> will sample me one.
>
> In any case, never met a noise I couldn't filter . . . but I have
> seen some filters that nobody wanted to put in their airplane.
>
> Bob . . .
>
>
>
Hi Bob and all,
In the past few months, I believe I have run across some problems due to
the Tyco EV-200.
For unknown reasons, it seemed to inhibit my Low Voltage Warning Module.
You'll find the story in English at :
http://contrails.free.fr/elec_lvwm_en.php
Some may remember my postings on the subject during the last two years.
I found a workaround by changing the LVWM model. It seems some are
impervious to the EV-200, and some are not. The guys at Tyco never
answered my e-mails.
FWIW,
Regards,
Gilles Thesee
Grenoble, France
http://contrails.free.fr
P.S. Please feel free to help me correct my English ;-)
Message 18
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--> AeroElectric-List message posted by: Erich_Weaver@URSCorp.com
Bob and other listers:
After a long wait, it appears that the newest and supposedly "final"
version of e-mags/p-mags are nearing shipment to a group of approximately
100 buyers, myself included. There are some updates to their web site
touting the some of the changes, with more to come I think - see
http://www.emagair.com/113.htm
Brad with the company tells me that the product will have provisions for
future communication, so that one could program the ignition for racing
versus a leisurely cruise, or perhaps for mogas instead of AV fuel. All
sounds good......
There is also a new manual available:
http://www.emagair.com/Manual%20L113v5.pdf
It has been my understanding that for past models, Bob's proposed Z-13
wiring for the product, (also revised elsewhere to include a maintenance
switch), was a little different than what the folks at e-mag electronic
ignitions spelled out. Not sure on the details of this, but I believe
Bob's wiring was intended to allow the typical ignition check during runup
(?). Anyway, I was hoping Bob and others might take a minute to review the
latest info in the provided links. Would love to hear any preliminary
comments, and especially with respect to anything you see that would
warrant a change from Z-13.
regards
Erich Weaver
Message 19
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Dr. Peter Laurence" <Dr.Laurence@mbdi.org>
> Some months ago, someone was asking about a circuit to
> make the float-switches in their airplane be a bit more
> definitive as to when the low fuel warning light was
> illuminated.
>
> I have hardware in hand that can be programmed to accomplish
> this task. We can watch for switch behavior to exhibit
> some characteristic like "switch closed more than 50% of the time
> over a 1 minute period" before the warning light is latched
> on. Given the flexibility of software, we can probably address
> any other low-fuel trip protocol. Does anyone have a need for
> this capability?>
>
> Bob . . .
Yes
Peter
>
>
Message 20
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
float switches?
At 03:45 PM 1/23/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: "Dr. Peter Laurence"
><Dr.Laurence@mbdi.org>
>
>
> > Some months ago, someone was asking about a circuit to
> > make the float-switches in their airplane be a bit more
> > definitive as to when the low fuel warning light was
> > illuminated.
> >
> > I have hardware in hand that can be programmed to accomplish
> > this task. We can watch for switch behavior to exhibit
> > some characteristic like "switch closed more than 50% of the time
> > over a 1 minute period" before the warning light is latched
> > on. Given the flexibility of software, we can probably address
> > any other low-fuel trip protocol. Does anyone have a need for
> > this capability?>
> >
> > Bob . . .
Do I understand correctly that a LOW FUEL condition is detected
by a CLOSING switch? Is there any problem with having the flicker
filter pulling lamps to ground to illuminate them?
The way the hardware is currently configured, float switches will
pull an input to ground as the fuel level goes down. The present
control algorithm I'm considering is to ignore the "flickering
switch" until it has been closed for more than 50% of the last
minute. When this condition is reached, the output pin for that
channel latches low (pulls annunicator light to ground).
The light will go out when the fuel level switch has been open
continuously for some period of time . . . say one minute.
If this sounds like something you could use, I'll put it in the
hopper that holds my software manager's tasks . . .
Another question, what kind of switches are you using? Hall
effect sensors would be ideal, totally enclosed reed switches
would be second best.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
http://www.aeroelectric.com
Message 21
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| Subject: | Re: RE: EV200 Conducted emissions |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
Interesting! I couldn't find the EV-200 relay I thought was
laying loose in the junk box. I'll see if I can get them
to sample me one.
Bob . . .
>Hi Bob and all,
>
>In the past few months, I believe I have run across some problems due to
>the Tyco EV-200.
>For unknown reasons, it seemed to inhibit my Low Voltage Warning Module.
>You'll find the story in English at :
>
>http://contrails.free.fr/elec_lvwm_en.php
>
>Some may remember my postings on the subject during the last two years.
>I found a workaround by changing the LVWM model. It seems some are
>impervious to the EV-200, and some are not. The guys at Tyco never
>answered my e-mails.
>
>FWIW,
>Regards,
>Gilles Thesee
>Grenoble, France
>http://contrails.free.fr
>
>P.S. Please feel free to help me correct my English ;-)
>
>
>--
>
>
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
http://www.aeroelectric.com
Message 22
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--> AeroElectric-List message posted by: "Mark R. Supinski" <mark.supinski@gmail.com>
Can anyone tell me where to track down the Honeywell microswitch Bob calls
out in one of the wigwag drawings? I can't seem to find anyone who actually
stocks it.
Thanks,
Mark Supinski
Message 23
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| Subject: | Voltage regulator |
--> AeroElectric-List message posted by: "David Shani" <David.Shani@sanmina-sci.com>
Hello=20all,
I=20am=20looking=20for=20information=20on=20inexpensive=20external=20voltage=20regulator
(automotive?)=20that=20will=20work=20well=20in=20our=20ships.
=20Thanks,
David
Scanned=20by=20Sanmina-SCI=20eShield=20=20_____________________________________________________________________________
Message 24
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| Subject: | ELT Remote Gotcha |
--> AeroElectric-List message posted by: PeterHunt1@aol.com
If you have a tip-up like me, mounting the ELT remote high on the panel
gives it excellent access for replacing the battery. Now, be sure to label the
ELT remote with the date the battery must be replaced.
Pete from Clearwater
RV-6, all electric panel, full IFR, 40 hours
Message 25
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 03:13 PM 1/23/2006 -0700, you wrote:
>--> AeroElectric-List message posted by: "Mark R. Supinski"
><mark.supinski@gmail.com>
>
>Can anyone tell me where to track down the Honeywell microswitch Bob calls
>out in one of the wigwag drawings? I can't seem to find anyone who actually
>stocks it.
>
>Thanks,
>
>Mark Supinski
It's a rarely used switch, expensive and probably not stocked many
places. Allied would order it for you:
http://www.alliedelec.com/Search/ProductDetail.asp?SKU=642-0197&SEARCH=4tl1%2D10&ID=&DESC=4TL1%2D10
Do a Google search on 4tl1-10. A number of parts suppliers
claim to have them in stock.
Bob . . .
Message 26
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| Subject: | Re: ectric-List:"Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: Jerry Fisher <jeremyfisher@verizon.net>
switches?
Bob,
You asked about the requirement for a flicker free fuel low warning light.
Yes, I for one have been looking for just such a circuit. I am
installing an automatic transfer system from the wing tanks to the
header tank on a Lancair 360, and would like to include a warning light
that means what it says. Where can we find this circuit or circuit
diagram? Thanks
Jerry Fisher
Message 27
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| Subject: | Re: Skymap IIIc Install manual |
--> AeroElectric-List message posted by: "Chris Good" <chrisjgood@lycos.com>
Richard,
I don't have a Skymap IIIC installation manual, but I did replace the battery in
my unit last year, after about 5 years of operation. I used Digikey part number
439-1015-ND:
http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=439-1015-ND&Site=US
Hopefully you can find an equivalent in the UK.
The battery needs to be soldered onto one of the circuit boards - not a problem
if you are handy with a soldering iron. Getting the thing apart & back together
again was a bit of a puzzle, but not too bad.
Regards,
Chris Good.
> ----- Original Message -----
> From: "Richard Garforth" <richard@hawk.flyer.co.uk>
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Skymap IIIc Install manual
> Date: Mon, 23 Jan 2006 09:59:41 -0000
>
>
> --> AeroElectric-List message posted by: "Richard Garforth"
> <richard@hawk.flyer.co.uk>
>
> I am trying to source a link to a maintenance/install manual for a
> Skymap IIIc so I can change the internal lithium battery. Can
> anyone help please ??
>
>
> Richard
>
>
>
>
>
>
>
>
>
>
--
Message 28
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| Subject: | ectric-List:"Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Dan Beadle" <Dan.Beadle@hq.InclineSoftworks.com>
I will have samples available in about 2 weeks.
Let me know if you want to be one of my testers.
Dan Beadle
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jerry
Fisher
Sent: Monday, January 23, 2006 5:06 PM
Subject: Re: AeroElectric-List:"Flicker Filter" for low fuel warning
float switches?
--> AeroElectric-List message posted by: Jerry Fisher
<jeremyfisher@verizon.net> switches?
Bob,
You asked about the requirement for a flicker free fuel low warning
light.
Yes, I for one have been looking for just such a circuit. I am
installing an automatic transfer system from the wing tanks to the
header tank on a Lancair 360, and would like to include a warning light
that means what it says. Where can we find this circuit or circuit
diagram? Thanks
Jerry Fisher
Message 29
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| Subject: | Re: "Flicker Filter" for low fuel warning float switches? |
--> AeroElectric-List message posted by: "Keith Hallsten" <KeithHallsten@quiknet.com>
Yes, it's been an item of discussion among Velocity pilots. We have a sump
tank to which both main tanks drain, in which is installed either a float
switch or one of the "no moving parts" optical switches (see
http://www.gemssensors.com/electrooptical.htm) . It causes the pulse to
race a bit when the light flickers!
Keith Hallsten
Subject: "Flicker Filter" for low fuel warning float
switches?
From: Robert L. Nuckolls, III (nuckollsr@cox.net
<mailto:nuckollsr@cox.net?subject=Re:%20%22Flicker%20Filter%22%20for%20low%2
0fuel%20warning%20float%20switches?&replyto=5.1.0.14.2.20060122235511.0160fa
88@pop.central.cox.net> )
Date: Sun Jan 22 - 10:01 PM
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<nuckollsr@cox.net
<mailto:nuckollsr@cox.net?subject=Re:%20%22Flicker%20Filter%22%20for%20low%2
0fuel%20warning%20float%20switches?&replyto=5.1.0.14.2.20060122235511.0160fa
88@pop.central.cox.net> >
Some months ago, someone was asking about a circuit to
make the float-switches in their airplane be a bit more
definitive as to when the low fuel warning light was
illuminated.
I have hardware in hand that can be programmed to accomplish
this task. We can watch for switch behavior to exhibit
some characteristic like "switch closed more than 50% of the time
over a 1 minute period" before the warning light is latched
on. Given the flexibility of software, we can probably address
any other low-fuel trip protocol. Does anyone have a need for
this capability?
Bob . . .
Message 30
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| Subject: | GRT/Lightspeed/Mags |
--> AeroElectric-List message posted by: "Allan Aaron" <aaaron@tvp.com.au>
Hi all
I have a GRT EIS 4000 and one lightspeed plasma III in my MustangII. I
was going to take the tach signal from the lightspeed but did some web
surfing and have come to the conclusion that it would be better to take
the signal from the P-lead since that way, it would be obvious if the
mag dies (no rpm signal) whereas if the lightspeed dies it will be
obvious because of the rpm drop. Is this the right approach? I don't
want to have to wire another switch in the panel.
Second, related question ... I'm using single shielded wire for the
p-lead. Core goes to the contact inside the ferrule (or whatever its
called). I've attached a pigtail to the shield and bolted that to one of
the 4 m/c screws that attached the HT leads. Is this the right
approach?
Thanks in advance
Allan
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