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Dynamic microphone preamplifier

Dynamic microphone preamplifier

Dilshan Jayakody published a new build, a microphone preamplifier:

This is single chip dynamic microphone preamplifier which is design to drive using commonly available 12V single rail power supplies. Preamplifier in this article is build around popular NE5532 dual low noise operational amplifier IC and this preamplifier is specifically constructed to drive professional 600Ω dynamic microphones.
This preamplifier consists with two amplifier stages and initial amplifier is design to get 36dB gain and final preamplifier is used to get 16dB of gain. Preamplifier gain controller is placed in between those two amplifiers and this separation allows reducing clipping in output waveform.

Project info at  Jayakody’s blog and  Elect.wikispaces.com.

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