Today's Message Index:
----------------------
1. 07:55 AM - Zener Diode Use (Mark Davis)
2. 09:34 AM - Flightbag GPS (Robert L. Nuckolls, III)
3. 09:35 AM - Re: Zener Diode Use (Robert L. Nuckolls, III)
4. 10:45 AM - Re: Flightbag GPS (Richard Girard)
5. 11:04 AM - Re: Flightbag GPS (Robert L. Nuckolls, III)
6. 11:20 AM - Re: Flightbag GPS (RGent1224@aol.com)
Message 1
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Bob,
The list discussion yesterday re: powering the fuel pump thru a switch
on the Infinity stick grip in a RV indicated that this should be done
either with the use of a relay or a Zener diode. I'm helping a friend
wire his RV-7A and he wants to do this as well but only with one of the
push buttons switches on the stick in parallel with the on-off rocker
switch on the panel. The pushbutton is only to be used to help during
starting the engine. Since space and already installed wiring make use
of relay pretty much a non-starter, use of a Zener diode looks like the
best solution. Unfortunately, I lack the knowledge and experience to
determine the correct Zener size and just how it should be wired into
the circuit to deal with the inrush current problem for the stick
switch. I'd very much appreciate any help/direction you could provide
in this regard.
Thanks,
Mark Davis
Message 2
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I have an extra hand-held GPS 310 that is the second such
radio I ever owned. In spite of dearth of gee-whiz features
it took me right over the center of many an airport.
It would make a good flight-bag back up for your
"plan-B". It is back-lit and runs on 2xAA alkaline
cells.
Would like to get $25 + postage for it.
Emacs!
Bob . . .
Message 3
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Subject: | Re: Zener Diode Use |
At 09:49 AM 5/7/2010, you wrote:
>
>Bob,
>
>The list discussion yesterday re: powering the fuel pump thru a
>switch on the Infinity stick grip in a RV indicated that this should
>be done either with the use of a relay or a Zener diode.
NO zener, relay only.
> I'm helping a friend wire his RV-7A and he wants to do this as
> well but only with one of the push buttons switches on the stick in
> parallel with the on-off rocker switch on the panel. The
> pushbutton is only to be used to help during starting the
> engine. Since space and already installed wiring make use of relay
> pretty much a non-starter, use of a Zener diode looks like the best solution.
Except that it is a non-solution . . .
> Unfortunately, I lack the knowledge and experience to determine
> the correct Zener size and just how it should be wired into the
> circuit to deal with the inrush current problem for the stick
> switch. I'd very much appreciate any help/direction you could
> provide in this regard.
This really isn't a very good idea. Switches on the stick
grip get more abuse than switches on the panel, yet they
are the least robust. They add failure modes that are at
least a nuisance but when wired to ship's systems, they
add RISK.
Please don't do this.
Bob . . .
Message 4
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Subject: | Re: Flightbag GPS |
Bob, I'll take it if it's not already spoken for.
Rick Girard
Udall
On Fri, May 7, 2010 at 11:33 AM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> I have an extra hand-held GPS 310 that is the second such
> radio I ever owned. In spite of dearth of gee-whiz features
> it took me right over the center of many an airport.
> It would make a good flight-bag back up for your
> "plan-B". It is back-lit and runs on 2xAA alkaline
> cells.
>
> Would like to get $25 + postage for it.
>
> [image: Emacs!]
>
>
> Bob . . .
>
Message 5
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Subject: | Re: Flightbag GPS |
At 12:42 PM 5/7/2010, you wrote:
>Bob, I'll take it if it's not already spoken for.
>
>Rick Girard
>Udall
You are the first to respond. Give me a call
at 316-209-7528 and we'll arrange for the
exchange.
Bob . . .
Message 6
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Subject: | Re: Flightbag GPS |
You can get a cigarette plug power adapter for them on Ebay
In a message dated 5/7/2010 1:05:40 P.M. Central Daylight Time,
nuckolls.bob@aeroelectric.com writes:
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<nuckolls.bob@aeroelectric.com>
At 12:42 PM 5/7/2010, you wrote:
>Bob, I'll take it if it's not already spoken for.
>
>Rick Girard
>Udall
You are the first to respond. Give me a call
at 316-209-7528 and we'll arrange for the
exchange.
Bob . . .
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