![]() Start with positive ground schematics for GE transistors, paying particular attention to the polarity markings.Īs with most things, GEO also has a GE TRansistor HFe/Gain testing jig, for sorting out the usability of the individuals. I like the FF Not tuned for highest gain, but ability to get 'resolute' high gain and clean up at the guitar volume. as does the RM, then a TB, having it's 2 gain stages and 3 transistors fine tuned, should be a simple matter, both effects on and some more fine tuning. Having the FF which cleans up at the guitar Vol. The booster/fuzz can also serve as 'Tonebender'. Given below is the list of popular transistors which can be used as a replacement for 2N3906: BC557, BC527, BC558, BC559, 2N2907, BC556, A1015, C945, 2N4403, 9014. Sometimes JFET and MOSFET can be substituted for each other or for NPN or PNP (either germanium or silicon), and sometimes they couldnt be substituted or. ![]() ![]() That way you can find a booster circuit which biases and sounds good with a transistor from batch which is most or.Īnd a Fuzz Face in similar fashion which utilizes the 1rst two transistor choices.įor both circuits the reads are at GEO, how to choose the transistors and bias them for instance. Logged 'A man is not dead while his name is still spoken. It looks from the datasheet that the 2n9013 has twice the Ic (continuous collector current) of 500mA, compared to a peak in the 3904 of 200mA. You can sub in a BC557 or similar, just remember to check the pin-out for both 2n3906 and whatever you sub. 3 Answers Sorted by: 6 How good a replacement is a rather complex question, mostly revolving around what you are looking to do with it. You could make 'perfbread' circuits, intended as something which could be 'finalized' by making some of the interchangable and trim components the fixed values you've chosen on the perfbread board. Aotearoa Re: Substitute for 2N3906 Reply 1 on: August 16, 2014, 07:29:35 PM 2n3906 is a PNP transistor.
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