Mini Audio Amplifier with MOSFET Technology

The circuit consists of preamplifier, tone controls, and regulated DC power supply, while providing a power output of 18 Watts for 8 Ohm load and 30 Watts for 4 Ohms load.

Preamplifier Guitar Control Circuit

The circuit has been designed for the purpose of creating a portable unit of preamplifier that would function as standalone control for gutitars.

Battery Powered Portable Amplifier for Headphone Use

The circuit was designed for high performance unit as it serves as a portable amplifier for headphones while being powered with 3 Volts.

Bass Boosting Audio Amplifier

The design of the circuit aims to create an audio amplifier that would provide more attention to the boosting of bass frequency while giving a power of 10 Watts into 8 Ohms load.

Audio Power Indicator with 6 LED Bars

The circuit has been designed for loudspeakers to provide a monitoring scheme of audio power being supplied which will determine that any setup will not be required without the presence of a power supply.

Audio Generator of Bells Ringing

The circuit was designed similarly with door bell units as it generates an audio of bells ringing with dual tones.