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Mini Mic Pre-Amplifier Circuit based IC LM358

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Mini Mic Pre-Amplifier Circuit based IC LM358

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25-02-2012, 03:05 PM

Mini Mic Pre-Amplifier Circuit based IC LM358

[attachment=17728]

Simple Audio Pre-Amp circuit
Designed based on single Transistor 2N3904, this circuit will provide good gain for weak audio signals such as electret microphone. Easy to build and really simple for pre-amp circuit

Condenser Mic preamplifier
This is a very simple preamplifier circuit for condenser microphone. This mic preamplifier also can be used for dynamic microphone.

You can replace the BC549 with BC109C. For better audio result, use ultra low noise transistor BC650C.

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