Audio Amplifiers, Sounds, Alarm Systems, and more Circuits Projects

Transistor stereo bass booster

Last Updated on: June 25, 2022 by Apichet Garaipoom

This is a bass booster circuit that use transistors as base. It is designed to increase a low frequency of audio on cheaper than ICs or normally circuit. Read more

100w amplifier circuit with PCB

Last Updated on: July 16, 2021 by Apichet Garaipoom

This 100W amplifier circuit by transistors, but very well OCL amplifier schematic.Use transistor MJ15003,MJ15004 as main. Power supply +38V 0 -38V 3A. […] Read more

Simple transistor intercom circuit

Last Updated on: July 14, 2022 by Apichet Garaipoom

See simple intercom circuit using transistors and a few parts. So easy build and cheaper than ICs. For a small home and learning. Read more

LM386 stereo amplifier in bridge 2 watts

Last Updated on: April 4, 2020 by Apichet Garaipoom

This is 2 watts + 2 watts Stereo small LM386 amplifier x3 ICs. It is cheap and easy to builds for BCL amplifier,mobile,MP3 player using 6V battery (AA x 4) […] Read more

TL084 circuits JFET Input Op-amp datasheet

Last Updated on: March 3, 2025 by Apichet Garaipoom

TL084 circuits JFET input quad op-amp datasheet

TL084: low noise OP-AMP in cheap. Use JFET input. Why popular in audio & a lot of circuits: wide bandwidths and fast slew rates. Example: Read more