Dual stage MOSFET based audio amplifier

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03:34:31

MOSFET based audio amplifier with two stage amplification. The first stage amplifies the low level signal voltage, the second stage, which is isolated from the first by capacitors, then amplifies the current. The isolation prevents distortion of the amplified voltage signal. 

The "150v" can better be thought of (for instance, in a 12v car audio system) as two 75v boost converters. Where one is a standard boost converter, and the other is an inverting buck boost converter.

This represents a 1000w amplifier. Like class AB as it prioritizes audio fidelity over efficiency

Circuit is tested from 100hz up to 20khz and seems to work properly and maintain gain.

published 3 years ago

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