---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 05/07/10: 6 ---------------------------------------------------------- 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 _____________________________________ Time: 07:55:04 AM PST US From: Mark Davis Subject: AeroElectric-List: Zener Diode Use 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 _____________________________________ Time: 09:34:58 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Flightbag GPS 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 _____________________________________ Time: 09:35:56 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 10:45:34 AM PST US Subject: Re: AeroElectric-List: Flightbag GPS From: Richard Girard 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 _____________________________________ Time: 11:04:49 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 11:20:40 AM PST US From: RGent1224@aol.com Subject: Re: AeroElectric-List: 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" 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. 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