urgent

[installer2001]

Hello,
Guys how r u .Well can any body tell me the circuit of amplifier which really works.I have tried a lot of circuits but no body works.
" I want to give input through MIC  Amplifier will amplify our audio signal and output is taken by Speaker(8 ohms or 4 ohms).
plz plz tell me the circuit which really works.Well i am beginner in the field of electronics and this is our project.So plz tell an esy circuit."

 

[audioguru2]

1) Which type of microphone? Electret? Dynamic?
2) How much power to the speaker?
3) What power supply voltage? 13.8V from a car's battery?

All of our circuits "really work". Some of them are "ezy" to make.
What went wrong with the circuits you tried? Too much smoke? ;D ;D

 

[Staigen1]

Hi there installer2001, velcome to the forum

LM386 cirquits usally works good, also TDA2002/TDA2003 cirquits! Many others are good too!
A bad design can ruin the performace of an amp, make a good design! ;D ;D

//Staigen

 

[installer2001]

Well can u plz send me the circuit which works
Any mic can be used,any speaker
but plz plz send me the ckt of amplifier that works

 

[Staigen1]

Hi

Have you tested the cirquit in the thread "sensitive parabolic microphone"?
I belive it will work.

//Staigen

 

[audioguru2]

This circuit is used in the parabolic mics sold in toy stores:

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