problem with electret MIC

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ash1412

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Hi,

I am using Spirit-On wireless RF TXK1 & RXM1 module. When I am connecting PC speaker out to TXK1 input, I am able to listen sound on speaker. but when I am connecting electret MIC to TXK1 input and playing audio in-front of MIC, no sound is produce on speaker.

pls let me know what amplification ckt require for electret MIC?

Any references would be highly appreciated.

Regards
Ashwani
 

An electret mic needs to be powered properly. Its output is about only 10mV into a 10k or more load.
You probably need a preamp circuit to amplify its output level.
 

Thanks for ur reply. After giving proper voltage to electret mic, its working fine.



Regards
Ashwani
 

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