"If you refer to the picture of the microprocessor board, you will notice that the locations marked D1, D2 and D3 are populated by zero ohm resistors. That means that the 3 V microcontroller was powered from 5V. I am actually amazed that they worked at all, let alone worked for a while.
It is a shame that fluke.l saved on the cost of 3 diodes that way. The 1N4148 is $.02 at Mouser in 25 pieces lots." Didier KO4BB +++++++++++++++++++ What I did (and I've mentioned this before) is to replace the three zero ohm resistors with one red LED. The forward voltage drop is about 1.7vdc so it makes a pretty nice zener, and you have a power indicator to boot. -Arthur _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
