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Zygote with Si PNP

Started by pgodfrin, August 31, 2020, 12:19:57 AM

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pgodfrin

Well sir, you were right. The power was not getting there, except it lay in a sloppy solder shorting pins 6 & 7 of the IC. Darn I thought I had outgrown sloppy solders...
I haven't put it all together, but once I fixed the short, the power was correctly valued and inverted...
woohoo!

mauman


Zerro

If you changed "both direction" for those tranzistors, they are probably damaged now, because of reveted polarity. By the way, germanium tranzistors have slightly another characteristic with bias voltages at Basis. Generally, at output electrodes (here colector of Q2) you should have cca 1/2 of Ub, so cca 4,5 V. Try to play with R1 and then with R2 to set it. For another tranzistor respect the pins assigment. See schematic I sent below.
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