[Ronja] Progress report

[Karel Kulhavy]

Hello

I have made a 50V power supply for the photodiode. First I looked at some chips but they were difficult to get. Then I tried a rail to rail opamp and a diode-capacitor cascade. The available one for me was ICL7621 which turned out to betoo weak and too
slow.

Finally I took a 74HCT14 oscillator and 6 transistors to make a two-phase push-pull
emitter follower. That works just fine. Produces regulated voltage across a 47V zener diode.

The cascade is different from Greinacher/Cockroft-Walton the capacitors are not
connected in series but in parallel.

Karel