How to build this amplifier ? Need what component!!!
That's a very broad question. So I'll supply a broad answer. I googled build speaker amplifier, and got lots of good hits. Have a look through the hit list, and see if it answers your question.How to build this amplifier ? Need what component!!!
I agree with supernova -- you are not ready to make an audio amplifier from scratch.Ya !!! Which transistor? And how to adjust the base? And second circuit, what is mean by "by pass"?
Not me can't see the difference but have PNP and NPN transitor in first diagram and I just learn basic electronic only!!!I don't think this forum is the place to be looking for advice and circuits to build when a person can't tell the difference between an NPN and a PNP transistor from looking at the schematic. There are several other things omitted from the schematic that waht posted as well. Not that it isn't a workable circuit, but it is not a turnkey solution. It is a place to start.