50 watt power MOSFET amplifier circuit diagram

50 watt MOSFET power amplifier circuit diagram

This is a MOSFET transistor based power amplifier circuit that can be operated between +35V to -35V range. The input voltage is pre filtered and pre amplified before applying to the MOSFET switch. The pre audio amplifier is a differential amplifier section with PNP transistor.What is differential amplifier? A difference amplifier is a type of…

Simple home audio power amplifier circuit schematic

Simple home audio high power amplifier circuit schematic

Here is a new audio power amplifier schematic built around TIP darlington pair transistors. You can use this circuit for home audio power amplifiers and car audio amplifiers. The TIP142 and TIP147 darlington pair transistors forms a push pull high power amplifier configuration while the two BC558 PNP transistor provides a mini audio pre amplifier…

Simple portable Audio power amplifier circuit using LM386 IC

Portable audio power amplifier circuit

Here i-St@r comes with the simplest mini audio amplifier circuit schematic using LM386 low voltage audio power amplifier IC. This circuit is applicable to power medium sized speakers from a music player that can only drive earphones (lm386 headphone). The LM386 is a low voltage power amplifier IC designed for use in low voltage consumer applications. It can…

555 timer IC audio amplifier circuit schematics

555 timer IC audio amplifier circuit schematics diagram

Here we are going to discuss about a simple timer IC 555 project. The 555 timer IC can be used as an audio amplifier with astable multivibrator configuration. It functions as to carry out pulse width modulation (PWM) of audio signal. Current(I) capacity of 555 timer amplifier is 200mA which is sufficient to drive a small speaker. This simple…

Simple condenser microphone mini audio amplifier circuit schematic

Simple condenser microphone mini audio sound amplifier circuit schematic with BC547

This is a very useful and simple circuit diagram for amplifying weak signal from a capacitive condenser microphone. You can use this circuit for sound sensing applications and some automatic robotic sensors. We have already posted an efficient audio amplifier circuit using 1895 IC, it is somewhat complicated and is suitable for very sensitive applications. But this…