HP-35 Power Supply Waveforms

[cruff]

(04-06-2019 01:34 PM)albertofenini Wrote:  I'm using for all the diodes some germanium diodes marked AA117, these have a forward voltage drop
of 0,328 Volts versus the original that have a forward voltage drop of 0,275 V
I have a few original from hp left, not enough to make a whole PSU, but I can substitute just CR5
Do you think that changing just CR5 would make the difference ?

Probably not much of a difference for those values. Not enough to explain the higher voltages you are seeing. One thought occurred to me is that those are the open circuit unloaded voltages. You could add some resistive loads on the outputs and see how much the voltages might drop. It may be that your circuit is functioning correctly now and it just needs loads to bring them into range.