What an interesting idea. Wonder why that has not become a standard? (grin)
Gary -----Original Message----- From: "ae...@carolinaheli.com" <ae...@carolinaheli.com> Sent: 15/09/2015 10:18 PM To: "'Richard Fjeld'" <rpfj...@outlook.com>; "'Fred Townsend'" <fptowns...@earthlink.net>; "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Subject: Re: [Elecraft] K3: reverse 12 volt supply I have an idea. Why not color code the wires so we know which one is positive and which one is Ground (or neutral) ? Maybe make the positive lead red (like hot, danger) and the other one anything, black, green... Thoughts? Notice: The above post is a weak attempt at humor, albiet sarcastic , and is NOT INTENDED TO BE OFFENSIVE IN ANY WAY. Jerry Moore AE4PB, K3S SN# TBA later TOMORROW!! -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Fjeld Sent: Tuesday, September 15, 2015 1:02 AM To: Fred Townsend; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: reverse 12 volt supply It was a passing thought as; how to use a diode without causing a voltage drop was the original question. AD5X has an OVP and Rev Polarity project on his website that would be better. I couldn't think of the call sign at the time, so I suggested a relay. (I've worked with huge contactors that were on motor-generators to prevent run-aways) 73, Dick, n0ce On 9/14/2015 5:13 PM, Fred Townsend wrote: > Dick: > Relays? Sure, easy to do. Power relays are often used in many kinds > equipment. They are sometimes called 'contactors'. They are either big > and clunky or small and unreliable. Which kind do you want and what > are you willing to pay? > 73 > Fred, AE6QL > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to je...@carolinaheli.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to vk1zzg...@gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com