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Old 1st May 2012, 02:26 PM   #1
diyAudio Member
Join Date: Jan 2012
Default PNP Amp?

I've just come across a large number of surplus 2n3906 transistors(TO-92, if that matters). I know they're not the greatest, and being PNP rather than NPN(and not having matching 3904's), but does anyone have any ideas on what I should do w/ them?

Also, hello! I haven't posted much on here. I'm just getting into this DIY EE thing.

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Old 1st May 2012, 02:51 PM   #2
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Those are TO-92 cased small signal transistors, the onlyu thing you can do with them is small signal stuff like preamps, unless you feel like matching and hooking several hundred of them in parallel.
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Old 1st May 2012, 02:54 PM   #3
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I was afraid you might say that. And while that does sound tedious, I do have probably 200 of the little buggers...
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Old 1st May 2012, 03:07 PM   #4
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Your better off selling most them on ebay, like in sets of 10, 20, 30, 40, 50 or maybe even a hundred.

Or use them as firework ignitors.
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Old 1st May 2012, 03:27 PM   #5
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I cannot sell them. Firework igniter, maybe... But I'd rather do something interesting...
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Old 1st May 2012, 03:44 PM   #6
godfrey is offline godfrey  South Africa
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Location: Cape Town
You could make a preamplifier or tone controls or a headphone amp. Outside of audio, you could make things like an LED flasher, a siren or a radio transmitter.
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