Chuck NI0C wrote: > K6DBG wrote: > "I adjusted mine so the display voltmeter matches the measured > voltage past the diode." > > That's an interesting idea; however if you ever go back to assembly > steps using the internal DVM, you would have to compensate for the > offset you put in (assuming it is a pure offset and no gain factor is > involved), or use an external DVM for those steps. > > I prefer having my internal DVM reading the true voltage.
I think you misunderstand - the adjustment is specifically to have the display show the true voltage. The K2 uses a voltage divider (R9, R10) into an op amp (U3B) to determine the displayed voltage; the resistors used are "only" 1%, so there is some inaccuracy in the resulting "V SENSE". Changing R10 to a trimpot allows me to set the bridge accurately. 73, chris _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
