Microphone Amplifier

307

06:59:18

1-stage microphone amplifier  with deep negative feedback. collected works really. excellent overhears up to 3 meters!

published 10 years ago

hurz

10 years ago

Yes, good for a spy circuit or karaoke ;-) What kind of mic have you used? Must a dynamic one or just a little loudspearker?

KristianZefi

10 years ago

Where should i connect the microphone?

thebugger

10 years ago

Depends on the mic. A comdenser mic and a carbon mic will require DC biasing.

lmccoig

10 years ago

My guess, microphone or magnetic speaker at 1 mV generator.

KristianZefi

10 years ago

I thought to connect the microphone where is the 1mV generator and delete it...aftrer connect the speaker or the jack on the green point...is right or not?

lmccoig

10 years ago

If your earphones work like mine, you plug earphone into microphone input ( or connect where you want to try connection) to speak into earpiece like regular microphone and make some checks?

sasa4250

10 years ago

1 mV generator is a dynamic microphone (equivalent). for carbon microphone need a constant offset, all right.

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