120W MOSFET Amplifier Circuit Schematic utilizing IRFP240 & IRFP9240

Overview

Amplifiers play a crucial role in audio systems, supplying the essential power needed to drive speakers and deliver superior sound quality. MOSFET amplifiers are recognized for their high efficiency and minimal distortion, which makes them a favorite among audio enthusiasts. This article will explore a 120W MOSFET amplifier circuit diagram featuring IRFP240 & IRFP9240 in the output section and 2SC4793, 2SA1837, BD139, MJE340, MJE350, BC547, BC557, 2N5401 in the driver and preamplifier sections.

Specifications of components utilized in the amplifier circuit:

IRFP240:

20A continuous drain current
200V drain-source voltage
0.075 ohm on-resistance

IRFP9240:

12A continuous drain current
200V drain-source voltage
0.65 ohm on-resistance

2SC4793:

1.5A collector current
160V collector-emitter voltage
25W power dissipation

2SA1837:

1.5A collector current
160V collector-emitter voltage
25W power dissipation

BD139:

Collector-Emitter Voltage: 80V
Collector Current: 1.5A
12.5W power dissipation
Gain: 25-125

2N5401:

600mA collector current
150V collector-emitter voltage
0.625W power dissipation

20W MOSFET Amplifier Circuit Schematic using IRFP240 & IRFP9240

This project can be constructed with a handful of essential components. The circuit diagram for this project is displayed below.

120W MOSFET Amplifier Circuit Schematic utilizing IRFP240 & IRFP9240

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Warning: This website includes details about high voltage circuits. Enter at your own risk, making sure you have the necessary knowledge and safety precautions to avoid electric shock or injury.