Sure. Start here for vacuum tube logic: http://www.neazoi.com/technology/logic.htm
wunder K6WRU On Aug 29, 2013, at 4:15 PM, Ralph Parker wrote: >> If you use Joe's solution where PTT is one input into an AND gate, if PTT is >> not asserted, your relays will not close. All inputs to the AND gate must be >> present for the output to change state. > > I've wanted this 'feature request' since K3 Day 1. > Don's solution sounds like a reasonable work-around. > Unfortunately, I'm transistorially challenged. > Can I build this with a few 12AU7s ? > > Ralph, VE7XF > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Walter Underwood [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
