Posted on Sep 8, 2012

The amplifier picks up the TV`s audio output signal and amplifies it to drive a set of earphones for private listening. It is built around an LM324 quad op amp and an LM386 low-power audio amplifier.

Click here to download the full size of the above Circuit.

The circuit uses an inexpensive electret microphone element as the pick-up and a set of earphones as the output device.

Leave Comment

characters left:

New Circuits



Popular Circuits

Power Amplifier
LMD18200 motor controller electronic project
Electro Harmonix drum sequencer
An experiment in programming the AN6311NFA PLL
A Hartley Oscillator
Automatic temperature control circuit
1000w exchange regulator automatic voltage regulator circuit diagram
Fill light indoor photography circuit