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 […]
Month: November 2011
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 […]
Mono/Stereo Preamp based on LM387
Mono Preamp (or stereo), based on an LM387 for dynamic microphone. The preamplifier described here is designed to connect a […]
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