2x300W or 600W Power audio Amplifier


Posted on Oct 18, 2012

The circuit is based around {LM4702}manufactured by NATIONAL semiconductors&{MJ11029-MJ11028} by ON semiconductors It is a high fidelity audio power amplifier. Designed for demanding consumer and pro-audio applications. You can also use this circuit with AV receivers, Audiophile power amps, Pro Audio High voltage industrial applications etc Amplifier output power maybe scaled by changing the supply voltage and number of output devices.


2x300W or 600W Power audio Amplifier
Click here to download the full size of the above Circuit.

The circuit includes thermal shutdown circuitry that activates when the die temperature exceeds 150°c. CIRCUIT’s mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. Maximum Output power @ 8ohms : 300watt. Absolute max power supply voltage :±38V to ±40V. Recommended power supply voltage :±30V to ±35V.




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