HP-35 Power Supply Waveforms

[Zaphod]

(04-06-2019 01:34 PM)albertofenini Wrote:  Hi
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 ?
Thanks for help!

Don't fear running out of germanium , just use modern day schottky's, they have a similarly low forward volt drop