This RIAA stereo preamplifier uses only conventional components, you can easily find components at electronics store. The circuit is intended to […]
Amplifier Circuit Design
35W Audio Amplifier based LM391
This is the circuit diagram of a 35W audio amplifier based on LM391. The LM391 is a comprehensive driver to […]
Mono Preamp Mic based BC108 Transistor
The microphone preamp based transistor described here is powered by 9 V and less than 1 mA current consumption, it […]
Simple Amplifier Circuit 3W / 8 ohm
These Simple amplifier based transistor 3W / 8 ohm are very small and very easy to carry, work with single […]
Max 1W / 8 Ohms Amplifier based on LM386 with Input for Guitar
This 1 watt amp is very easy to built in very small dimensions, working with only single 9V battery, and […]
5W / 8 Ohms Bridge Amplifier based on Two LM380s
The Audio amplifier described here uses two small amplifiers like LM380 mounted in bridge. Two small amplifiers LM380 (2.5 W max in each 18 V), which mounted bridge mode make it […]
Mono Preamp with Small Transformer and Two Transistors
The microphone preamplifier described here is a ‘hybrid’ passive / active. A small transformer input provides a small contribution to […]
Mono Preamp based on CMOS IC CD4069
Microphone preamp described here is not a professional preamp, but the original preamp and it is cheap and easy to […]
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