---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 06/07/15: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:12 AM - Re: Re: Alternator with no battery? (Bill Watson) 2. 09:39 AM - Re: power supply for testing (Jeff Page) 3. 01:45 PM - Re: Lighted Toggle Switch recommendation (DeWitt Whittington) 4. 05:57 PM - LED Light for SD-8 On Indication (rossmickey@comcast.net) 5. 05:59 PM - D-Sub connector use (Ken Ryan) 6. 08:13 PM - Re: LED Light for SD-8 On Indication (user9253) ________________________________ Message 1 _____________________________________ Time: 08:12:30 AM PST US From: Bill Watson Subject: Re: AeroElectric-List: Re: Alternator with no battery? It seems that the answer presented is that 'many' alternator installations will continue to provide power but may be subject to being 'stalled' by heavy loads. Specificity would seem to be required to take this further. The next question would seem to be, "what components and configuration are you curious about"? So, I have (3) B&C LR3C-14 regulators controlling (2) B&C alternators. Another question might be "Is there a difference between a battery losing a cell (partial failure) and a 'broken battery cable' or (total failure)"? Bill "just following along out of curiosity" Watson On 6/4/2015 10:37 PM, donjohnston wrote: > > Sigh... Let me try this again: > > Does anyone know what the impact of a loss of battery output (wire coming loose, solenoid failing, battery falling out of the plane, being stolen in flight by aliens, etc.) on the output of the alternator (with engine running at cruise power)? > > It would seem to me that if the load is less than the output of the alternator, it should continue to put out power as long as the engine is running. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=443059#443059 > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > > ________________________________ Message 2 _____________________________________ Time: 09:39:10 AM PST US From: Jeff Page Subject: Re: AeroElectric-List: power supply for testing I bought something like this. I don't remember which vendor. This one has adjustable voltage. I bought one in this voltage range, so that I could have 14.2V after dropping through a protection diode. If the unit is not plugged in, but is "back fed" voltage from the airplane battery, it will be damaged, so put an eBus diode in series, then adjust the output voltage as desired. http://tinyurl.com/lq7je4b A computer power supply produces quite a lot of current at 5V, but not so much as 12V. Some models require a load on the 5V output to regulate properly. Jeff Page Dream Aircraft Tundra #10 > Time: 03:58:56 AM PST US > Subject: Re: AeroElectric-List: power supply for testing > From: A R Goldman > > What about a power supply from an old computer? > > Thanks > > Rich > > Sent from my iPhone > >> On Jun 4, 2015, at 1:41 PM, "Robert L. Nuckolls, III" ectric.com> wrote: >> >> At 10:09 AM 6/4/2015, you wrote: >>> Would this item be an acceptable choice for testing my electrical system? > Could it be used without any battery in the system? My avionics etc. are al > l Dynon. >>> >>> http://www.amazon.com/Universal-Regulated-Switching-Computer-Project/dp/B > 00D7CWSCG/ref=sr_1_5?ie=UTF8&qid=1433430384&sr=8-5&keywords=12+vol > t+DC+power+supply&pebp=1433430415435&perid=1MV8XVM71ACD3B1WWBYZ >>> >>> Thanks, >>> >>> Ken ________________________________ Message 3 _____________________________________ Time: 01:45:51 PM PST US Subject: Re: AeroElectric-List: Lighted Toggle Switch recommendation From: DeWitt Whittington One of my partners in the Sportsman sent me this information on our rocker switches: "We have Honeywell AML-24 series switches. (various models, depending on function)" Dee DeWitt (Dee) Whittington Richmond, VA 804-677-4849 iPhone 804-358-4333 Home On Fri, Jun 5, 2015 at 7:11 PM, DeWitt Whittington < dee.whittington@gmail.com> wrote: > I'm still trying to find the exact part number, Hari, for our Honeywell, > lighted rocker switches for our Sportsman. We bought them through John > Stark in Columbus, Georgia, who built our panel. I'll see if Doug Hanson, > my partner who is the electrical guru knows. > > Dee > > DeWitt (Dee) Whittington > Richmond, VA > 804-677-4849 iPhone > 804-358-4333 Home > > > On Thu, Jun 4, 2015 at 12:03 PM, Hariharan Gopalan > wrote: > >> Hello Group >> >> Is anyone using lighted toggle switches? Looking for recommendations. >> >> Thanks >> Hari >> >> * >> >> >> * >> >> > ________________________________ Message 4 _____________________________________ Time: 05:57:50 PM PST US From: rossmickey@comcast.net Subject: AeroElectric-List: LED Light for SD-8 On Indication I wanted to install an LED "ON" indicator light for when I switch on the SD-8 alternate power supply. I rigged an LED so it works with the 12 Volt system and tried it on the switch which goes to ground for ON. It works fine when it is the only thing on the switch. When I hook up the SD-8 relay to it ( as wired for the original Z-8 diagram with NO self excite) which is also a switch to ground for on, the LED lights up even in the off position. Since the LED ground and SD-8 relay ground share the same terminal, my only explanation is that the LED is finding a ground somewhere along the SD-8 relay pathway. I have stared at the drawing until my eyes are crossed and can't figure out what's happening. Is my SD-8 wiring screwed up or is there actually a way for the LED to find a ground along the pathway? If so, I guess I am SOL on hooking an on indicator light. Ross ________________________________ Message 5 _____________________________________ Time: 05:59:06 PM PST US From: Ken Ryan Subject: AeroElectric-List: D-Sub connector use My left wing contains my Dynon ADAHRS module, which is normally connected to the Skyview Network using a D-Sub 9 connector. The wing also has an Aveo LED light that has 4 wires (nav power, strobe power, ground, snynchronization). The nav light draws 0.6 amps and the strobe draws 3.2 amps (peak). Wire sizes are 22 gauge for the ADAHRS and strobe sync wire, and 20 gauge for the strobe power, nav power and ground. I want a connector at the wing root to facilitate wing folding (or removal). Can I use a D-Sub 15 connector for this purpose. I hope so because I already spent the day completing it. ________________________________ Message 6 _____________________________________ Time: 08:13:58 PM PST US Subject: AeroElectric-List: Re: LED Light for SD-8 On Indication From: "user9253" Can you attach a drawing of your schematic showing how the LED is wired? I can not visualize how the LED is connected. LEDs require very little current to illuminate. Sometimes a solid state switch (when off) will leak enough current to turn on an LED. A schematic will be very helpful to others who are trying to answer your question. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=443199#443199 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.