In a message dated 04/06/2010 16:53:36 GMT Daylight Time, [email protected] writes:
I've added a photo of the component side of the 8051 PCB at: http://www.prc68.com/I/ThunderBolt.shtml#8051PCB J1-2 is connected directly to pin 6 of the uC which is also connected to the output of the 78D05 regulator. -------------------- Yes it seems to be, but if you check you'll find that it's not actually a direct connection. J1-2 and pin 6 of the uC are connected together and then connected to the bottom of what's marked as D3 in your photo. D1, 2 and 3 are in series between the regulator output and the processor pin 6 but it's these that have been replaced with zero ohm links so metering will show a direct connection. It's these links need to be removed and replaced with diodes as per Didier's original schematic. regards Nigel GM8PZR _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
