Tuesday, September 8, 2020

Earbud amp using transistors from GE computer boards - 2

I had a little shop time and made a box for the amp. I just used a piece of scrap flashing. It measured 3" X 3-1/2" that should be big enough for the amp and battery. When I can get back in the shop I'll do the build.

It will need a volume pot, input jack, output jack and battery holder.

I changed the transistors and changed some bias in the hopes to match the transistors better and reduce excess power consumption. After I do the build I will measure the current drain. 

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