---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 05/17/10: 15 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:14 AM - Bussmann fuse blocks terminal tool (Chris Stone) 2. 08:58 AM - Re: Bussmann fuse blocks terminal tool (Robert L. Nuckolls, III) 3. 09:01 AM - Re: Building a push to talk circuit (Robert L. Nuckolls, III) 4. 09:28 AM - Re: Dynon D10A audio alarm output signal (Robert L. Nuckolls, III) 5. 10:04 AM - Re: Building a push to talk circuit (Richard Girard) 6. 12:38 PM - Dual EFI circuit(s) questions (creightonious) 7. 01:29 PM - Re: Building a push to talk circuit (Robert L. Nuckolls, III) 8. 01:38 PM - Re: Dual EFI circuit(s) questions (Robert L. Nuckolls, III) 9. 02:02 PM - Re: Bussmann fuse blocks terminal tool (rckol) 10. 02:11 PM - Re: Building a push to talk circuit (Richard Girard) 11. 03:51 PM - Re: Building a push to talk circuit (Robert L. Nuckolls, III) 12. 07:54 PM - Preferred method (Chris Barber) 13. 08:59 PM - Re: Preferred method (Robert L. Nuckolls, III) 14. 09:13 PM - One sensor to two data displays (Brad Shafer) 15. 10:31 PM - Re: Dual EFI circuit(s) questions (creightonious) ________________________________ Message 1 _____________________________________ Time: 06:14:52 AM PST US From: Chris Stone Subject: AeroElectric-List: Bussmann fuse blocks terminal tool Ron, There should be a PDF attached to this message. Sorry for the delay. Chris Stone Hi Chris "I can send you a sketch. Very easy to make from a piece of ~.030-.040 thick steel." If you don't mind, please send a sketch. Thx. Ron Parigoris ________________________________ Message 2 _____________________________________ Time: 08:58:31 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Bussmann fuse blocks terminal tool At 08:06 AM 5/17/2010, you wrote: >Ron, > >There should be a PDF attached to this message. Sorry for the delay. > >Chris Stone Chris, I'd like to archive your sketch on the website. Can you give me a list of the Bussmann fuse blocks to which this tool applies? Bob . . . ________________________________ Message 3 _____________________________________ Time: 09:01:46 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Building a push to talk circuit At 02:44 PM 5/16/2010, you wrote: >I bought a Vertex radio and need a push to talk switching circuit >for it. I just can't turn down the VOX actuation level enough to >deal with a pusher engine almost above my head, and a two stroke one >at that. There is one listed in the manual, but there is no part no. >listed. As it happens I have all the plugs and sockets to build one. >If I understand how this this works I need two switches, one >normally open, the other NC. The NO switch connects into the >receiver and the NC into the transmitter so that when the button is >pushed the receiver is grounded and the transmitter opened. >Does anyone on the list have one they've built, a drawing of the >circuit, or a web address where info can be found? If the adapter offered by the mfgr is intended to work with traditional general aviation headsets, then you only need a single, normally open, push button. Can you point me to a downloadable users manual or installation manual for this radio? Bob . . . //// (o o) ===========o00o=(_)=o00o======== < Go ahead, make my day . . . > < show me where I'm wrong. > ================================ ________________________________ Message 4 _____________________________________ Time: 09:28:18 AM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Dynon D10A audio alarm output signal Bob, Mike (at) Dynon Tech support confirms--zero voltage when alarm is not sounding. Okay, it would be interesting to see their output schematic but . . . What about that diode you mentioned? Probably wouldn't hurt, right? . . . you are correct. We can design for the worst case and assume the output is capacitor coupled. I should have done that first step out of the gate. See changes to the schematic at: http://aeroelectric.com/Pictures/Schematics/Dynon_Alarm_Tone_Detector_A.pdf And why do they still call it Radio Shack? Shouldn't rename themselves Cell Phone Shack?? Hmmm . . . Radio Shack has indeed experienced a constellation of changes in marketing philosophy over the years. The fact that they still exist amongst the big-box outlets is a demonstration of their recipes for success. But when you've got many store fronts and advertisements spread over so much area, its a sure bet that their logo and brand name have significant good-will value. I suspect the ol' "If it ain't broke, don't fix it" rule is in effect here. Bob . . . ________________________________ Message 5 _____________________________________ Time: 10:04:11 AM PST US Subject: Re: AeroElectric-List: Building a push to talk circuit From: Richard Girard Bob, Page 45 has a drawing of the push to talk switch installed, but no circuit info. Rick On Mon, May 17, 2010 at 11:03 AM, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > nuckolls.bob@aeroelectric.com> > > > At 02:44 PM 5/16/2010, you wrote: > >> I bought a Vertex radio and need a push to talk switching circuit for it. >> I just can't turn down the VOX actuation level enough to deal with a pusher >> engine almost above my head, and a two stroke one at that. There is one >> listed in the manual, but there is no part no. listed. As it happens I have >> all the plugs and sockets to build one. >> If I understand how this this works I need two switches, one normally >> open, the other NC. The NO switch connects into the receiver and the NC into >> the transmitter so that when the button is pushed the receiver is grounded >> and the transmitter opened. >> Does anyone on the list have one they've built, a drawing of the circuit, >> or a web address where info can be found? >> > > If the adapter offered by the mfgr is > intended to work with traditional general > aviation headsets, then you only need a > single, normally open, push button. > > Can you point me to a downloadable users > manual or installation manual for this > radio? > > > Bob . . . > > //// > (o o) > ===========o00o=(_)=o00o======== > < Go ahead, make my day . . . > > < show me where I'm wrong. > > ================================ > > ________________________________ Message 6 _____________________________________ Time: 12:38:39 PM PST US Subject: AeroElectric-List: Dual EFI circuit(s) questions From: "creightonious" I have a Rotax with 2 completely independent, stand-alone EFI systems. There is no commonality except fuel tank (at the selector) and electrical source (Batteries and alternator) Figure Z-19 is a great help, and I intend to base the system on it but In my system there is no alternate or stand-by EFI system. Each is primary and co-equal, and is to be used on alternate flights. Only one is used at any given time. Therefore, each must be able to be powered by a main bus and by the endurance bus (in the event of alternator failure or the failure of 1 battery or the failure of an EFI system). One scheme for powering these is from an EFI bus powered by the main or engine bus and by the endurance bus with each feed isolated by a schottky diode to prevent feeding a dead bus. I really am at a conceptual dead end here and all assistance is appreciated. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297994#297994 ________________________________ Message 7 _____________________________________ Time: 01:29:39 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Building a push to talk circuit At 12:01 PM 5/17/2010, you wrote: >Bob, Page 45 has a drawing of the push to talk switch installed, but >no circuit info. > >Rick That helps! It wasn't clear as to the number and styles of connectors. I see that you're wanting to ADD ptt into an existing, traditional A/C microphone path. You'll need a 3-wire, .206/.210 plug and appropriate mating jack . . . http://www.aeroelectric.com/Pictures/Connectors/Audio/206-210_3-Ckt_Microphone.jpg a handily mounted pushbutton . . . http://aeroelectric.com/Pictures/Schematics/spst150ma2.jpg and wire like this . . . http://aeroelectric.com/Pictures/Schematics/Push-to-Talk_Adapter.pdf Bob . . . ________________________________ Message 8 _____________________________________ Time: 01:38:59 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Dual EFI circuit(s) questions At 02:32 PM 5/17/2010, you wrote: > >I have a Rotax with 2 completely independent, stand-alone EFI >systems. There is no commonality except fuel tank (at the selector) >and electrical source (Batteries and alternator) >Figure Z-19 is a great help, and I intend to base the system on it >but In my system there is no alternate or stand-by EFI system. Each >is primary and co-equal, and is to be used on alternate >flights. Only one is used at any given time. >Therefore, each must be able to be powered by a main bus and by the >endurance bus (in the event of alternator failure or the failure of >1 battery or the failure of an EFI system). >One scheme for powering these is from an EFI bus powered by the main >or engine bus and by the endurance bus with each feed isolated by a >schottky diode to prevent feeding a dead bus. >I really am at a conceptual dead end here and all assistance is appreciated. Use Z-16. Put each EFI on its own switch. #1 from a battery bus (not shown but easily added) and #2 from the main bus. If the engine is in trouble if BOTH systems are ON, then arrange some form of mechanical lockout for TWO SEPARATE switches to prevent both being ON at the same time. Exercise due diligence in maintaining your battery such that its capacity is KNOWN before flight. You'll save weight, money, system complexity, and gain better system reliability. Bob . . . ________________________________ Message 9 _____________________________________ Time: 02:02:55 PM PST US Subject: AeroElectric-List: Re: Bussmann fuse blocks terminal tool From: "rckol" >Very easy to make from a piece of ~.030-.040 thick steel. Ron, This means the dimension of 0.40 on the drawing should be 0.04? -------- rck Read this topic online here: http://forums.matronics.com/viewtopic.php?p=298003#298003 ________________________________ Message 10 ____________________________________ Time: 02:11:36 PM PST US Subject: Re: AeroElectric-List: Building a push to talk circuit From: Richard Girard It's not often when an electronics project can be built from my stategic supplies (junk) box, but I'm pretty sure this one can. I have the plug and socket from the previous radio installation and the switch is already mounted in the stick. I may have to sneak out to the hangar and build this tonight. Thanks Bob, Rick On Mon, May 17, 2010 at 3:30 PM, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > nuckolls.bob@aeroelectric.com> > > At 12:01 PM 5/17/2010, you wrote: > >> Bob, Page 45 has a drawing of the push to talk switch installed, but no >> circuit info. >> >> Rick >> > > That helps! > > It wasn't clear as to the number and styles > of connectors. I see that you're wanting to > ADD ptt into an existing, traditional A/C > microphone path. > > You'll need a 3-wire, .206/.210 plug and appropriate > mating jack . . . > > > http://www.aeroelectric.com/Pictures/Connectors/Audio/206-210_3-Ckt_Microphone.jpg > > a handily mounted pushbutton . . . > > http://aeroelectric.com/Pictures/Schematics/spst150ma2.jpg > > and wire like this . . . > > http://aeroelectric.com/Pictures/Schematics/Push-to-Talk_Adapter.pdf > > > Bob . . . > > ________________________________ Message 11 ____________________________________ Time: 03:51:24 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Building a push to talk circuit At 04:09 PM 5/17/2010, you wrote: >It's not often when an electronics project can be built from my >stategic supplies (junk) box, but I'm pretty sure this one can. I >have the plug and socket from the previous radio installation and >the switch is already mounted in the stick. I may have to sneak out >to the hangar and build this tonight. Long runs of wire in the adapter are usually a shielded pair with the shield carrying common ground. However, try twisting a trio of 22AWG wires together with a drill motor. Keep tension on wires while twisting. Twist them tight enough to get 4-6 turns per inch. Then before you open the chuck, reverse the drill and slowly "untwist" while relaxing tension. If the trio tends to "throw a loop" then put the tension back on after you've straightened it out and untwisted some more. If you open the chuck with a lot of twisting force in the wires, the trio will tangle up on the floor like an apoplectic snake. I think you'll find the twisted trio sufficiently immune to electro-statically coupled noise. Bob . . . ________________________________ Message 12 ____________________________________ Time: 07:54:34 PM PST US From: Chris Barber Subject: AeroElectric-List: Preferred method Over the past few years I have become pretty comfortable with basic 12volt wiring for my Velocity SE/Rotary install. I have most of the panel complete without too much worry about it being good to go. It consist of a Dynon Skyview, two King 125 radio's, old transponder, King 89b GPS, intercom and audio panel. I have installed a 7 inch touch screen to run from a Netbook computer with solid state memory. I want to keep PDF files of the plane as well as Anywhere Map usage with this small but pretty powerful computer. Also, some onboard entertainment. My question is, what is the best way to wire this small computer into the ships power. I have had suggested that I buy a cigarette adapter plug and power supply and just plug it in that way, however, I am wanting a more direct and permanent connection. I am not sure how well the computer will play with the 12volt system since it expects a wall plug. I do not know if there is a conventional wisdom method for this type of install. Pardon my ignorance. What may y'all suggest? My skills are much better than three years ago, but still pretty limited and what may be very obvious to you, well, is not so much for me. Thanks. All the best, Chris Barber Houston, GSOT ________________________________ Message 13 ____________________________________ Time: 08:59:09 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Preferred method > >My question is, what is the best way to wire this small computer >into the ships power. What are the voltage and current ratings on the ac mains power supply? Usually, these small computers run on 19 volts DC or so at a couple amps. It would not be difficult to build a permanently installed 14-29v up-converter with the appropriate connector to mate with the computer. Bob . . . ________________________________ Message 14 ____________________________________ Time: 09:13:26 PM PST US From: Brad Shafer Subject: AeroElectric-List: One sensor to two data displays For redundancy and convenience, I want use both an EIS 4000 and a Dynon to display engine data. Can I use the same sensor for both? How would I wire i t to prevent any crosstalk between the EIS and Dynon? Thanks, Brad ________________________________ DISCLAIMER: This e-mail and any attachments to it may contain confidential and propriet ary material and is solely for the use of the intended recipient. Any revie w, use, disclosure, distribution or copying of this transmittal is prohibit ed except by or on behalf of the intended recipient. If you have received t his transmittal in error, please notify the sender and destroy this e-mail and any attachments and all copies, whether electronic or printed. ________________________________ Message 15 ____________________________________ Time: 10:31:37 PM PST US Subject: AeroElectric-List: Re: Dual EFI circuit(s) questions From: "creightonious" Bob and all, I should have added that my all-electric Rotax has an internally-regulated 50amp alternator, belt driven off the back of the engine. The intake plenum blocks access to the pad at the gearbox, so a standby alternator is not an option. I don't know that Z-16 is applicable. A design goal is to have a real 2.5 hours in the event of an alternator failure. Engine system and e-radio load (including contactor) should total 12 amps. I don't believe the stock charging system would handle even that load on a continuous basis-to say nothing of adding non-e loads like lighting, gauges, other radios, etc. Speaking of contactors, is a 40 amp Bosch style relay an alternative? Saving .8 amps is worth someting. I've been thinking 2 batteries for so long I'm having trouble letting go of Z-19. But 1ea 35 amp battery is lighter than 2ea 18amp ones... Creighton Read this topic online here: http://forums.matronics.com/viewtopic.php?p=298033#298033 ------------------------------------------------------------------------------------- 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.