Ah, but Wayne and I have veto power.. both have to agree. :-) e -------- Original Message -------- Subject: Re: [KPA500] IO Board Schematic Date: Tue, 24 Nov 2009 17:35:05 -0800 From: Lyle Johnson <k...@wavecable.com> To: Eric Swartz - WA6HHQ, Elecraft <e...@elecraft.com> CC: Robert Friess <rfri...@usa.net>, Jack Brindle <jackbrin...@earthlink.net>, Rod Brink <k...@comcast.net>, wayne burdick <n...@elecraft.com>, "Bob Wolbert, K6XX" <k...@cruzio.com>, Lyle Johnson <k...@wavecable.com>
Eric Swartz - WA6HHQ, Elecraft wrote: > I agree. Looks like we now have both a quorum *and* a veto-proof vote :-) L > e > > > Lyle Johnson wrote: >> Hello Bob! >> >>> If we all agree that the ALC voltage will be derived from analog >>> processed FWD power and MCU processed REFL power, PA current, and >>> Heatsink Temperature in some yet-to-be-defined SMOP way and that >>> these voltages will be summed and inverted with a simple voltage >>> divider rear panel or MENU adjustable potentiometer on the output and >>> that all of this circuitry will reside on the front panel with only a >>> single wire going to the IO board, I will craft a schematic. >> >> Well, you and I agree. Wayne's out of town, so we'll assume he >> agrees. since he can't deny it :-) >> >> Seems reasonable that we want FAST reaction time in the case of >> overdrive. I'm not certain that forward power will tell us that, but >> it seems like it could. >> >> The temperature stuff, reflected power stuff, etc., should be fast >> enough through the processor if you think the PA transistors can stand >> the effects of a sudden open or short when running full allowed power >> without damage until the processor can intervene. >> >> Lyle > > ______________________________________________________________ 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
