make the mic more sensitive

[Gundy]

I want to make an “amp” for the mic of a cell phone head set.
I am using one of the cheap ear bud type for the mic. (Small electret)

I built an FM converter to hear the cell phone… but the mic from the head set is not sensitive enough.
I would like to make the mic more sensitive so I don’t have to shout

I was thinking of using a simple NPN transistor pre amp circuit.
But I would like to clean up the input a little.

 

[dingo]

Try buying a better quaility mic.

Google "Pre Amp Circuit" here one I found from there at the top of the page



**broken link removed**

 

[Johnson777717]

Check out this site. Look for "electret amplifier" or "electret preamp" or something along those lines. You should be able to find a relatively simple amplifier for your headset. Good luck!

https://www.commlinx.com.au/schematics.htm

 

[marymoo]

You could just buy another headset with a mic that is physically closer to your mouth since acoustic loss has a 1/r relationship.

I want to make an “amp” for the mic of a cell phone head set.
I am using one of the cheap ear bud type for the mic. (Small electret)

I built an FM converter to hear the cell phone… but the mic from the head set is not sensitive enough.
I would like to make the mic more sensitive so I don’t have to shout

I was thinking of using a simple NPN transistor pre amp circuit.
But I would like to clean up the input a little.