Mike asked: The build for K2 #4661 continues...
I am doing the final resistance check on p. 71 of the K2 manual (the RF board is basically complete now), and I am getting unstable readings on the Q7 collector. The readings are all above 500 ohms, as they should be, but they are constantly changing. Hopefully this is normal? ---------------------- Hi, Mike! Is the resistance steadily increasing as you hold the probe on the collector? (Just a guess). There's a big 47 ufd capacitor in the collector circuit that must charge up (C126). It'll take a while, depending upon how much current your DMM provides in Ohms range. Modern DMM's really restrict the current to protect transistors and diodes from damage, so the capacitor may take quite a while to charge up and let the apparent resistance reading stabilize. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [email protected] 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
