Notice I said "(system ground and system 12 VDC is available at both the switch(s) and the relay)".
I imagine a system where the single line is normally floating with nothing on it. The control switch(s) would put the control line to 12 VDC or Ground when activated. Somehow at the latching realy the realy would flip from one state to the other depending whether the control line went to 12 VDC or to Ground. To save juice, no current should flow when the control switch(s) are not pressed. Perhaps if you could figure this one out, we could use the same approach for the Second Problem. Norm S/V Bandersnatch Lying Julington Creek 30 07.695N 081 38.484W > [Original Message] > From: Rufus Laggren <[EMAIL PROTECTED]> > To: <[email protected]> > Date: 7/26/2008 8:19:13 PM > Subject: Re: [Liveaboard] 1 wire relay cntl - fr. 12 VDC buss > > You got me on the 1-button vs. 2-button. But riddle me this: If you use two buttons, just how do you get away w/ONE wire??? <g> My experience w/rocker switches is that it's easy to hit the wrong side or both in succession. Toggle switches are better but they are much easier to hit accidentally and are liable to getting broken off or hurting somebody (when people slip, fall or get thrown about). Two push buttons would seem the most functional, but also the most work (two holes instead of one). Pilot lights would also seem a good idea but that would be _more_ wires; well, maybe you could set it up so the signal wire remained hot after the switch event... > > And, yes the relay might oscillate dependent how long the button was held unless additional circuitry was used on the signal to open it electronically after the coil activated and not allow another event until the button had been released. But hey, the big challenge was that one wire thing for two events spec! > > Rufus > > > > > ----- Original Message ----- > > From: "Norm of Bandersnatch" <[EMAIL PROTECTED]> > > To: [email protected] > > Subject: Re: [Liveaboard] 1 wire relay cntl - fr. 12 VDC buss > > Date: Sat, 26 Jul 2008 12:27:15 -0400 > > > > > > > > Rufus, > > > > This sounds like a push-push arrangement. One push for each change of > > state. With capacitors and resistors to charge them the switching might be > > made a little more stable. Then again, if you held the "momentary contact > > switch" down a bit too long would not the latching relay snap back and > > forth? > > > > But I specifically stated "center-off momentary toggle switch or two > > pushbuttons at the control end". This is to insure the latching relay > > would really be in the position you requested. Push-push operation will > > not do this. > > > > Try again... > > > > Norm > > > -- > Be Yourself @ mail.com! > Choose From 200+ Email Addresses > Get a Free Account at www.mail.com > > > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard > To subscribe send an email to [EMAIL PROTECTED] > > To unsubscribe send an email to [EMAIL PROTECTED] > The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ > > To search the archives http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
