Microphone Pre-amplifier Circuit

admin June 2, 2010 2 Comments
Circuit Description Here is the circuit diagram of three input microphone preamplifier. This is a mic mixer preamplifier centered on the high gain operational amplifier IC LM 348. This IC LM 348 is a quad operational amplifier IC that...
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Telephone Pickup Pre-amplifier using 741 IC

admin April 28, 2010 2 Comments
Circuit Description The following circuit gives the circuit diagram of Telephone pickup Preamplifier. The central part of this circuit is the operational amplifier IC uA 741. This operational amplifier is used to pick up telephone signals. In this circuit,...
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