Quote:
Originally Posted by Pamphonica
I keep trying to see in the photos what that extra diode and capacitor are doing. I think they are placed right across the output of the regulator. That's quite conventional in symmetrical (+ and - voltage) supplies, using a shunt diode to to protect the regulator. The cathode would go to ground, the anode to the -12V line. The capacitor is just smoothing any noise on the output. So leave them in for now, if they are across the -12V line and ground.
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Will do so...
Just looking at the pin out of the 7812...so pin 1 is V+ in, that is connected to (according to my "drawings" ) that diode cathode and digital ground.. is this correct?
the pin1 should not be connected to the the point of rectified DC? Or I am way too confused now..
will order anyway the 7812 and test it ...just afraid that i am soldering this pcb too much... might burn the thing...
thanks again Jeremy