Seriously, it makes you wonder how the standard house wiring color code over here in the colonies ever came up with black as the hot wire. Green for ground makes sense though.
73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Sent: Tuesday, September 15, 2015 8:46 AM To: ae...@carolinaheli.com; 'Richard Fjeld' <rpfj...@outlook.com>; 'Fred Townsend' <fptowns...@earthlink.net>; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: reverse 12 volt supply 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 pin...@erols.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
