Amplifier Circuit Design

40W 4 channel audio amplifier

Quad amplifier 40W

This circuit provides a total of four speakers 4 ohms and 40W at 12v powered. It is therefore ideal for use in the car. Total harmonic distortion is rather high, about 10% at full power. But with half the power requirements (20W) is less than […]

50 w mosfet amplifier

50 watt Mosfet amplifier

The first stage of the 50 watt Mosfet amplifier is a differential amplifier based on transistors Q1 and Q2. Capacitor […]

Hi Fi headphone amplifier circuit diagram

Hi Fi headset Amplifier based LM 4880

Description of electronic assembly : LM4880 is a dual audio HiFi amplifier IC from National Semiconductor. This headphone amplifier circuit is specifically designed to produce high quality audio output with a minimum amount of components. LM4880 integrated circuit capable of delivering 250mW per channel into 8 ohm load.