50W Amplifier Kit Project based TDA1514A

Here the very simple but powerful amplifier kit which built based on TDA1514A amplifier chip. The circuit is for single channel only, you should build two similar circuit for stereo application. A heatsink is a must to be attached on the IC TDA1514A. This circuit can be used as well as stereo amplifiers Bass in a 5.1 system.

2x2W Stereo Audio Amplifier based LM1877

Here the 2x2 stereo audio amplifier based on single chip LM1877. LM1877 is an amplifier chip designed to deliver 2W/channel continuous into 8Ω loads. This is a very simple and easy build low power audio amplifier with a low number of external components, and still provide flexibility for use in stereo phonographs, tape recorders and AM-FM stereo receivers, etc.

LM380 Audio Amplifier Circuits

This is an easy made, really simple and low cost mini audio amplifier based on integrated circuit LM380. Of course the main part of this amplifier is LM380 itself. This LM380 audio amplifier is simple and easy to built because of the simple circuit design which use minimal external components.

The the above amplifier circuit shows the LM380 in non-inverting mode, with the inverting input left open (the inverting input may also be tied to ground, either directly or through a resistor or capacitor). C2 is used to decouple Vcc from ground. The optional RC circuit at the output (pin 8) is used for added stability, for example, to remove/reduce oscillations in an RF-sensitive application.