Electronic Stethoscope

Thread Starter

zoe1994

Joined May 1, 2015
4
Hi everyone

I am suppose to build an electronic stethoscope on "multisim" software
I found the circuit in one of the threads here but I don't know why exactly these stages were used
Can you please tell me why ?! :D
also, I wanna ask about the input for the circuit. I've been used a microphone but I want to know which frequency best to select that can mimic the heart beat sound?!

This is the circuit I built


thanx in advance :)
 

jpanhalt

Joined Jan 18, 2008
8,347
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