Germanium Overdrive

Started by dthurstan, July 02, 2020, 10:40:54 AM

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dthurstan

Hi Erik/bushidov

If you are building this, you need bias the germaniums correctly. So R2 & R7 might need to change, or be replaced with trims. I'll post some voltages.

dthurstan

Here are my voltages;

Q1   AC128   gain ~27
c 6.5
b 1
e 0.9

Q2   AC128   gain ~60
c 7.6
b 0.55
e 0.5

Q3   2N3906
c 5.7
b 0.75
e 0.1

bushidov

I figured as much, but you had precise resistances listed, so I thought you might have known something I didnt.
"A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away."

- Antoine de Saint-Exupéry