simple amplifier circuit?

Question

I need a really simply, and small, amplifier (and high output) for any signal/audio;
can I do it with just a transistor and battery?? thanks

thanks sean for being the only one to try and answer so far, well to be more specific, I want to power a speaker with my iPod but the speaker (not a big speaker, only like a 1.5-12 volts im guessing) doesn't go loud enough, and i'd like it as simple as possible without comprimising sound quality, thanks for any kind of help

Answer 1

high output? load imp ? rail voltage = ? you must be more specific. that is the big problen i've seen on these questions....not enough information

Answer 2

You'll need a few more circuit components (resistors and capacitors) than just a battery and a transistor. And you haven't really specified what you mean by 'high output' and how much gain the circuit must have.

HTH

Doug

Answer 3

The enter resistance of the transistor in a typical emitter point is Rbb'=beta/gm, the place gm=40*Ic and Ic is the DC collector present day. So the final enter resistance is Rbb' in parallel with 2.7k and 22k. The output resistance of the transistor is extremely super so the final output impedance of the circuit is desperate via the two.2k resistor and the pot..

Answer 4

the LM 741 is the standard for all purpose amplification. It's an 8 pin chip, requires 5 volts, and its really easy to use.

I can email you a circuit that I've built, that works really well, but I can't seem to get your email anywhere.

Answer 5

You need some resisters and capositers