This RIAA stereo preamplifier uses only conventional components, you can easily find components at electronics store. The circuit is intended to […]
Category: Pre-amplifier
Pre-amplifier circuit
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 […]
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 […]
Small Electret Microphone Pre-amplifier
The mic pre amp described here is designed to connect a small electret microphone and uses an integrated circuit type […]
Preamp for Speakers as a Microphone 2
The previous Preamp for the speakers as a microphone installation is indeed simple, but has virtually no gain. It is quite possible to add a second transistor to fill the gap, as […]
Preamp for Speaker as a Microphone
This Microphone Preamp circuit shows that it is possible to use the speaker as a microphone, and is specifically designed […]
Mono Preamp Based on NE5534
This achievement shows that it is possible to create a balanced dynamic microphone preamp, it is relatively simple. This preamp […]
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