---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 02/02/16: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:28 AM - Collie Hat Switches (Werner Schneider) 2. 03:09 AM - Re: SD-20 became BC410-H? (Carlos Trigo) 3. 03:19 AM - Re: Collie Hat Switches (Carlos Trigo) 4. 04:40 AM - Re: SD-20 became BC410-H? (Ralph E. Capen) 5. 06:39 AM - Re: Collie Hat Switches (ashleysc@broadstripe.net) 6. 09:15 AM - Re: Re: Automatic way to turn On the Standby alternator (was Difference between LR3C and SB1A regulators) (Robert L. Nuckolls, III) 7. 02:37 PM - Re: Re: Automatic way to turn On the Standby alternator (Carlos Trigo) 8. 03:14 PM - Re: Re: Automatic way to turn On the Standby alternator (Eric Page) 9. 03:40 PM - Re: Re: Automatic way to turn On the Standby alternator (Carlos Trigo) 10. 05:05 PM - Re: Re: Automatic way to turn On the Standby alternator (Eric Page) 11. 06:43 PM - Re: Re: Automatic way to turn On the Standby alternator (Charlie England) 12. 10:32 PM - Re: Re: Automatic way to turn On the Standby alternator (Werner Schneider) ________________________________ Message 1 _____________________________________ Time: 01:28:36 AM PST US Subject: AeroElectric-List: Collie Hat Switches From: Werner Schneider --- MIME Errors - No Plain-Text Section Found --- A message with no text/plain MIME section was received. The entire body of the message was removed. Please resend the email using Plain Text formatting. HOTMAIL is notorious for only including an HTML section in their client's default configuration. If you're using HOTMAIL, please see your email application's settings and switch to a default mail option that uses "Plain Text". --- MIME Errors No Plain-Text Section Found --- ________________________________ Message 2 _____________________________________ Time: 03:09:41 AM PST US From: "Carlos Trigo" Subject: RE: AeroElectric-List: SD-20 became BC410-H? Ralph I had the same doubt a couple of weeks ago, and Greg Jones (G.M. of B&C) co nfirmed that they renamed the SD-20, it is now called BC410-H. Carlos -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectr ic-list-server@matronics.com] On Behalf Of Ralph E. Capen Sent: segunda-feira, 1 de Fevereiro de 2016 15:52 Subject: AeroElectric-List: SD-20 became BC410-H? --> < recapen@earthlink.net> Going through my previous invoices to get a spare shear coupling for my vac uum pad alternator, my invoice shows a SD-20. B and C no longer has that u nit available - they show a BC410-H. Is this a new superseding part number? Thanks, Ralph ldersbooks.com om/contribution www.matronics.com/Navigator?AeroElectric-List om/contribution --- Este e-mail foi verificado em termos de v=C3=ADrus pelo software antiv=C3 =ADrus Avast. https://www.avast.com/antivirus ________________________________ Message 3 _____________________________________ Time: 03:19:05 AM PST US From: "Carlos Trigo" Subject: RE: AeroElectric-List: Collie Hat Switches Werner I suppose that the guy who sells the Infinity Stick grip also sells the components, including the Hat switch. Try http://infinityaerospace.com Cheers Carlos From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Werner Schneider Sent: ter=E7a-feira, 2 de Fevereiro de 2016 09:27 Subject: AeroElectric-List: Collie Hat Switches I would like to pull the lists wisdom and knowledge. My dad creates the stick grips out of cherry wood (I have already a pair in my Glastar (don't put the mic key on top!)), now for the RV10 you have 2 electric trims, one version would be two switches in the panel, but I like to sit in flying position to trim, so a collie hat would be the ideal scenario for me. What is the list experience (this will be low amps as no direct drive) with that kind of switches? Any sources for it (found some from Digikey). Many thanks for your ideas, hints, tips coming.... Cheers Werner --- Este e-mail foi verificado em termos de v=EDrus pelo software antiv=EDrus A vast. https://www.avast.com/antivirus ________________________________ Message 4 _____________________________________ Time: 04:40:05 AM PST US Subject: RE: AeroElectric-List: SD-20 became BC410-H? From: "Ralph E. Capen" VGhhbmtzIQoKClNlbnQgZnJvbSBteSBWZXJpem9uIFdpcmVsZXNzIDRHIExURSBzbWFydHBob25l Cgo8ZGl2Pi0tLS0tLS0tIE9yaWdpbmFsIG1lc3NhZ2UgLS0tLS0tLS08L2Rpdj48ZGl2PkZyb206 IENhcmxvcyBUcmlnbyA8dHJpZ29AbWFpbC50ZWxlcGFjLnB0PiA8L2Rpdj48ZGl2PkRhdGU6MDIv MDIvMjAxNiAgMDY6MDggIChHTVQtMDU6MDApIDwvZGl2PjxkaXY+VG86IGFlcm9lbGVjdHJpYy1s aXN0QG1hdHJvbmljcy5jb20gPC9kaXY+PGRpdj5TdWJqZWN0OiBSRTogQWVyb0VsZWN0cmljLUxp c3Q6IFNELTIwIGJlY2FtZSBCQzQxMC1IPyA8L2Rpdj48ZGl2Pgo8L2Rpdj5SYWxwaAogCkkgaGFk IHRoZSBzYW1lIGRvdWJ0IGEgY291cGxlIG9mIHdlZWtzIGFnbywgYW5kIEdyZWcgSm9uZXMgKEcu TS4gb2YgQiZDKSBjb25maXJtZWQgdGhhdCB0aGV5IHJlbmFtZWQgdGhlIFNELTIwLCBpdCBpcyBu b3cgY2FsbGVkIEJDNDEwLUguCiAKQ2FybG9zIAogCiAKIAotLS0tLU9yaWdpbmFsIE1lc3NhZ2Ut LS0tLQpGcm9tOiBvd25lci1hZXJvZWxlY3RyaWMtbGlzdC1zZXJ2ZXJAbWF0cm9uaWNzLmNvbSBb bWFpbHRvOm93bmVyLWFlcm9lbGVjdHJpYy1saXN0LXNlcnZlckBtYXRyb25pY3MuY29tXSBPbiBC ZWhhbGYgT2YgUmFscGggRS4gQ2FwZW4KU2VudDogc2VndW5kYS1mZWlyYSwgMSBkZSBGZXZlcmVp cm8gZGUgMjAxNiAxNTo1MgpUbzogYWVyb2VsZWN0cmljLWxpc3RAbWF0cm9uaWNzLmNvbQpTdWJq ZWN0OiBBZXJvRWxlY3RyaWMtTGlzdDogU0QtMjAgYmVjYW1lIEJDNDEwLUg/CiAKLS0+IEFlcm9F bGVjdHJpYy1MaXN0IG1lc3NhZ2UgcG9zdGVkIGJ5OiAiUmFscGggRS4gQ2FwZW4iCi0tPiA8cmVj YXBlbkBlYXJ0aGxpbmsubmV0PgogCiAKR29pbmcgdGhyb3VnaCBteSBwcmV2aW91cyBpbnZvaWNl cyB0byBnZXQgYSBzcGFyZSBzaGVhciBjb3VwbGluZyBmb3IgbXkgdmFjdXVtIHBhZCBhbHRlcm5h dG9yLCBteSBpbnZvaWNlIHNob3dzIGEgU0QtMjAuICBCIGFuZCBDIG5vIGxvbmdlciBoYXMgdGhh dCB1bml0IGF2YWlsYWJsZSAtIHRoZXkgc2hvdyBhIEJDNDEwLUguCiAKSXMgdGhpcyBhIG5ldyBz dXBlcnNlZGluZyBwYXJ0IG51bWJlcj8KIApUaGFua3MsClJhbHBoCiAKIApvcmUgd3d3LmJ1aWxk ZXJzYm9va3MuY29tCmh0dHA6Ly93d3cubWF0cm9uaWNzLmNvbS9jb250cmlidXRpb27vv70gICAg ICAgICAgICAgICAgICAgICAgICAgICAgIC1NYXR0IERyYWxsZSwgTGlzdCBBZG1pbi4KCmh0dHA6 Ly93d3cubWF0cm9uaWNzLmNvbS9OYXZpZ2F0b3I/QWVyb0VsZWM9PT09PT09PT09PT09PT09PT09 PQoK77+9ICAgICAgIC0gTUFUUk9OSUNTIFdFQiBGT1JVTVMgLW5pY3MuY29tIj5odHRwOi8vZm9y dT09PT09PT09PT09PT09PT09PT09PT09PCAgICAgICAtIExpc3QgQ29udHJpYnV0aW9uIFdlYiBT aXRlIC1odHRwOi8vd3d3Lm1hdHJvbmljcy5jb20vY29udHJpYj09PT0KIAogCkVzdGUgZS1tYWls IGZvaSBlbnZpYWRvIGEgcGFydGlyIGRlIHVtIGNvbXB1dGFkb3Igc2VtIHbDrXJ1cyBwcm90ZWdp ZG8gcGVsYSBBdmFzdC4gCnd3dy5hdmFzdC5jb20 ________________________________ Message 5 _____________________________________ Time: 06:39:44 AM PST US From: ashleysc@broadstripe.net Subject: Re: AeroElectric-List: Collie Hat Switches Hi Werner; Beautiful stick grip!=C2- Questions: 1.=C2- Does your Dad do these commercially (i.e. for sale to others)? 2.=C2- Is it an ambidextrous design?=C2- (I fly with either hand on the grip.) 3.=C2- I would only want a coolie hat on top and a push to talk toggle in front. 4.=C2- I need two grips. If yes to all these questions, perhaps we could take the conversation off-l ine. Cheers!=C2-=C2- Stu. ashleysc@broadstripe.net ----- Original Message ----- From: "Werner Schneider" Sent: Tuesday, February 2, 2016 1:26:35 AM Subject: AeroElectric-List: Collie Hat Switches I would like to pull the lists wisdom and knowledge. My dad creates the stick grips out of cherry wood (I have already a pair in my Glastar (don't put the mic key on top!)), =C2-now for the RV10 you have 2 electric trims, one version would be two switches in the panel, but I like to sit in flying position to trim, so a c ollie hat would be the ideal scenario for me. What is the list experience (this will be low amps as no direct drive) with that kind of switches? Any sources for it (found some from Digikey). Many thanks for your ideas, hints, tips coming.... Cheers Werner ________________________________ Message 6 _____________________________________ Time: 09:15:36 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator (was Difference between LR3C and SB1A regulators) At 05:33 AM 2/1/2016, you wrote: >Well, scratching my head about this thread, I >came up with a brilliant idea on how to manage a 2-alternator system. >(most probably there were hundreds of other >people, before me, who had the same idea=85) > >Let me put it out to you, anyway > >According to the second option I made in my last >post (below), flying normally with the MAIN ALT >field switch On, and the BackUp ALT field switch Off. >When the pilot is warned that no current is >flowing from the MAIN ALT, he shall turn Off the >MAIN ALT field and manually turn On the Backup ALT field. > >How about designing a circuit that, when the >pilot turns Off the MAIN ALT field, >automatically the BackUp ALT field is turned On? > >Ideas welcome! > That's pretty much what the LR3C/SB1 combination does . . . but the 'magic' is in the monitoring and annunciation system built into the SB1. You COULD simply use two LR3C regulators in a Z-12 style installation. But if your ship's loads are less than 20A, then the failure would not be noticed. The core ideas behind the SB1 called for annunciation of the failure combined with a simple means for prompting the pilot to reduce loads to under 20A. This protcol is consistent with design goals in TC aircraft to not allow a failure to go un-announced -AND- to provide crew with information for keeping stand-by alternator within rated limits. This was necessary to smooth the STC process for putting a Z-12 like system on a TC aircraft. We have more latitude in OBAM aircraft . . . the owner can install current instrumentation on the s/b alternator, then run two LR3C regulators, both set for 14.2, and leave the s/b system OFF in normal ops. Lost of main alternator would be annunciated by LOW VOLTS warning whereupon the pilot moves a couple of switches and monitors instrumentation to do a load reduction. After 40+ years of working in FMEA and cockpit protocols, I am reluctant to automate much of anything. Adding automation increases parts count. It must be applied carefully such that some automatic function doesn't hide useful/critical information from the pilot. Last, it needs to add value. If you're cruising along 200 miles out of destination and the low voltage light comes on, you have plenty of time to accomplish a prudent response . . . finish your cup of coffee. Making a 3-seconds-or-less run through the flipping of switches will not have any appreciable benefit for reducing risk in the outcome of your flight. Hence, my long repeated advice of keep it simple to minimize cost of ownership, weight and cockpit complexities that call for any other pilot, particularly the next owner, to acquire new understanding. Electro-whizzies on the panel are constantly driving up risk of distraction from operation of the airplane. It has been the well seasoned goal of airframe designers not to drive up system complexities any more than absolutely necessary . . . vagaries in fuel system operations on Barons buried more than a few propellers in the dirt . . . I think it was the Aerostar fuel system that made for several bad days in the cockpit too. Bob . . . ________________________________ Message 7 _____________________________________ Time: 02:37:35 PM PST US From: "Carlos Trigo" Subject: RE: AeroElectric-List: RE: Automatic way to turn On the Standby alternator Thanks again for your eloquent explanations. However, I probably didn=92t make myself clear about my idea. In my system (switches working through the VP-X box), turning Off the MAIN Alternator field switch means interrupting a ground wire. And turning On the Standby Alternator means connecting a ground wire. (Switches in the Vertical Power system work by connecting or disconnecting ground to the assigned pins in their red box) Therefore, what I need to design is simply an electrical way to accomplish the following action: when I flip the Main ALT switch to Off (interrupting a ground wire), this same action automatically connects the ground wire that switches the STBY ALT field Is there a simple and elegant solution to do this? Cheers Carlos From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L =2E Nuckolls, III Sent: ter=E7a-feira, 2 de Fevereiro de 2016 17:13 Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator (was Difference between LR3C and SB1A regulators) At 05:33 AM 2/1/2016, you wrote: Well, scratching my head about this thread, I came up with a brilliant idea on how to manage a 2-alternator system. (most probably there were hundreds of other people, before me, who had the same idea=85) Let me put it out to you, anyway According to the second option I made in my last post (below), flying normally with the MAIN ALT field switch On, and the BackUp ALT field switch Off. When the pilot is warned that no current is flowing from the MAIN ALT, he shall turn Off the MAIN ALT field and manually turn On the Backup ALT field =2E How about designing a circuit that, when the pilot turns Off the MAIN ALT field, automatically the BackUp ALT field is turned On? Ideas welcome! That's pretty much what the LR3C/SB1 combination does . . . but the 'magic' is in the monitoring and annunciation system built into the SB1. You COULD simply use two LR3C regulators in a Z-12 style installation. But if your ship's loads are less than 20A, then the failure would not be noticed. The core ideas behind the SB1 called for annunciation of the failure combined with a simple means for prompting the pilot to reduce loads to under 20A. This protcol is consistent with design goals in TC aircraft to not allow a failure to go un-announced -AND- to provide crew with information for keeping stand-by alternator within rated limits. This was necessary to smooth the STC process for putting a Z-12 like system on a TC aircraft. We have more latitude in OBAM aircraft . . . the owner can install current instrumentation on the s/b alternator, then run two LR3C regulators, both set for 14.2, and leave the s/b system OFF in normal ops. Lost of main alternator would be annunciated by LOW VOLTS warning whereupon the pilot moves a couple of switches and monitors instrumentation to do a load reduction. After 40+ years of working in FMEA and cockpit protocols, I am reluctant to automate much of anything. Adding automation increases parts count. It must be applied carefully such that some automatic function doesn't hide useful/critical information from the pilot. Last, it needs to add value. If you're cruising along 200 miles out of destination and the low voltage light comes on, you have plenty of time to accomplish a prudent response . . . finish your cup of coffee. Making a 3-seconds-or-less run through the flipping of switches will not have any appreciable benefit for reducing risk in the outcome of your flight. Hence, my long repeated advice of keep it simple to minimize cost of ownership, weight and cockpit complexities that call for any other pilot, particularly the next owner, to acquire new understanding. Electro-whizzies on the panel are constantly driving up risk of distraction from operation of the airplane. It has been the well seasoned goal of airframe designers not to drive up system complexities any more than absolutely necessary . . . vagaries in fuel system operations on Barons buried more than a few propellers in the dirt . . . I think it was the Aerostar fuel system that made for several bad days in the cockpit too. Bob . . . --- Este e-mail foi verificado em termos de v=EDrus pelo software antiv=EDrus A vast. https://www.avast.com/antivirus ________________________________ Message 8 _____________________________________ Time: 03:14:06 PM PST US Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator From: Eric Page Yes, a single-pole double-throw, ON-ON switch. Ground on the common tab, ma in alternator control to your VP-X on one side, standby on the other. This w ill, of course, offer no way to disable both alternators simultaneously, unl ess you use an ON-OFF-ON switch. Eric > On Feb 2, 2016, at 2:35 PM, Carlos Trigo wrote: > Thanks again for your eloquent explanations. > However, I probably didn=99t make myself clear about my idea. > > In my system (switches working through the VP-X box), turning Off the MAIN Alternator field switch means interrupting a ground wire. > And turning On the Standby Alternator means connecting a ground wire. > (Switches in the Vertical Power system work by connecting or disconnecting ground to the assigned pins in their red box) > > Therefore, what I need to design is simply an electrical way to accomplish the following action: > when I flip the Main ALT switch to Off (interrupting a ground wire), thi s same action automatically connects the ground wire that switches the STBY A LT field > > Is there a simple and elegant solution to do this? > > Cheers > Carlos ________________________________ Message 9 _____________________________________ Time: 03:40:42 PM PST US From: "Carlos Trigo" Subject: RE: AeroElectric-List: RE: Automatic way to turn On the Standby alternator Eric That is brilliantly simple! Do you think this is a reliable solution? And, in your opinion, should I have the possibility of turning OFF both alt ernators simultaneously? CT From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectr ic-list-server@matronics.com] On Behalf Of Eric Page Sent: ter=C3=A7a-feira, 2 de Fevereiro de 2016 23:13 Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby al ternator Yes, a single-pole double-throw, ON-ON switch. Ground on the common tab, m ain alternator control to your VP-X on one side, standby on the other. Thi s will, of course, offer no way to disable both alternators simultaneously, unless you use an ON-OFF-ON switch. Eric On Feb 2, 2016, at 2:35 PM, Carlos Trigo wrote: Thanks again for your eloquent explanations. However, I probably didn=99t make myself clear about my idea. In my system (switches working through the VP-X box), turning Off the MAIN Alternator field switch means interrupting a ground wire. And turning On the Standby Alternator means connecting a ground wire. (Switches in the Vertical Power system work by connecting or disconnecting ground to the assigned pins in their red box) Therefore, what I need to design is simply an electrical way to accomplish the following action: when I flip the Main ALT switch to Off (interrupting a ground wire), this same action automatically connects the ground wire that switches the STBY ALT field Is there a simple and elegant solution to do this? Cheers Carlos --- Este e-mail foi verificado em termos de v=C3=ADrus pelo software antiv=C3 =ADrus Avast. https://www.avast.com/antivirus ________________________________ Message 10 ____________________________________ Time: 05:05:36 PM PST US Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator From: Eric Page I suppose it will be as reliable as the quality of the switch and wiring you use. Buy a high quality switch like the B&C S700-1-3 (ON-ON) or S700-1-1 ( ON-OFF-ON), use connectors and techniques as advised in the Connection book a nd it should last longer than all of us. Since I've never designed an aircraft electrical system, much less built one , I'll leave it others to advise whether you should be able to turn both alt ernators off. Bob? Eric > On Feb 2, 2016, at 3:39 PM, Carlos Trigo wrote: > Eric > > That is brilliantly simple! > Do you think this is a reliable solution? > > And, in your opinion, should I have the possibility of turning OFF both al ternators simultaneously? > > CT > > > > From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelect ric-list-server@matronics.com] On Behalf Of Eric Page > Sent: ter=C3=A7a-feira, 2 de Fevereiro de 2016 23:13 > To: aeroelectric-list@matronics.com > Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby a lternator > > Yes, a single-pole double-throw, ON-ON switch. Ground on the common tab, m ain alternator control to your VP-X on one side, standby on the other. This will, of course, offer no way to disable both alternators simultaneously, u nless you use an ON-OFF-ON switch. > > Eric > > > On Feb 2, 2016, at 2:35 PM, Carlos Trigo wrote: > Thanks again for your eloquent explanations. > However, I probably didn=99t make myself clear about my idea. > > In my system (switches working through the VP-X box), turning Off the MAIN Alternator field switch means interrupting a ground wire. > And turning On the Standby Alternator means connecting a ground wire. > (Switches in the Vertical Power system work by connecting or disconnecting ground to the assigned pins in their red box) > > Therefore, what I need to design is simply an electrical way to accomplish the following action: > when I flip the Main ALT switch to Off (interrupting a ground wire), thi s same action automatically connects the ground wire that switches the STBY A LT field > > Is there a simple and elegant solution to do this? > > Cheers > Carlos > Este e-mail foi enviado a partir de um computador sem v=C3=ADrus protegido pela Avast. > www.avast.com ________________________________ Message 11 ____________________________________ Time: 06:43:08 PM PST US Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator From: Charlie England A mechanical failure in that single switch could take out both alternators. is that acceptable? Needing to turn both off would imply that both have failed 'shorted' and are trying to drain the battery. Not likely, but separate switches fix that, too. Charlie On 2/2/2016 5:39 PM, Carlos Trigo wrote: > > Eric > > That is brilliantly simple! > > Do you think this is a reliable solution? > > And, in your opinion, should I have the possibility of turning OFF > both alternators simultaneously? > > CT > > *From:*owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] *On Behalf Of > *Eric Page > *Sent:* tera-feira, 2 de Fevereiro de 2016 23:13 > *To:* aeroelectric-list@matronics.com > *Subject:* Re: AeroElectric-List: RE: Automatic way to turn On the > Standby alternator > > Yes, a single-pole double-throw, ON-ON switch. Ground on the common > tab, main alternator control to your VP-X on one side, standby on the > other. This will, of course, offer no way to disable both alternators > simultaneously, unless you use an ON-OFF-ON switch. > > Eric > > > On Feb 2, 2016, at 2:35 PM, Carlos Trigo > wrote: > > Thanks again for your eloquent explanations. > > However, I probably didnt make myself clear about my idea. > > In my system (switches working through the VP-X box), turning Off > the MAIN Alternator field switch means interrupting a ground wire. > > And turning On the Standby Alternator means connecting a ground wire. > > (Switches in the Vertical Power system work by connecting or > disconnecting ground to the assigned pins in their red box) > > Therefore, what I need to design is simply an electrical way to > accomplish the following action: > > when I flip the Main ALT switch to Off (interrupting a ground > wire), this same action automatically connects the ground wire > that switches the STBY ALT field > > Is there a simple and elegant solution to do this? > > Cheers > > Carlos > > Este e-mail foi enviado a partir de um computador sem vrus protegido > pela Avast. > www.avast.com > > > ________________________________ Message 12 ____________________________________ Time: 10:32:21 PM PST US Subject: Re: AeroElectric-List: RE: Automatic way to turn On the Standby alternator From: Werner Schneider Carlos, can't the VP-X do that logic, did you check with them? Cheers Werner On 02.02.2016 23:35, Carlos Trigo wrote: > Thanks again for your eloquent explanations. > > However, I probably didnt make myself clear about my idea. > > In my system (switches working through the VP-X box), turning Off the > MAIN Alternator field switch means interrupting a ground wire. > > And turning On the Standby Alternator means connecting a ground wire. > > (Switches in the Vertical Power system work by connecting or > disconnecting ground to the assigned pins in their red box) > > Therefore, what I need to design is simply an electrical way to > accomplish the following action: > > when I flip the Main ALT switch to Off (interrupting a ground wire), > this same action automatically connects the ground wire that switches > the STBY ALT field > > Is there a simple and elegant solution to do this? > > Cheers > > Carlos > ------------------------------------------------------------------------------------- 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.