Mini Pre-microphone

Have you ever tried to use dynamic microphone with PC?
If you have, you'll know that it won't work.
So a microphone amplifier is needed.
And I've found one at Baanmooh, it's 200 BHT, very small.
The sensitivity can be adjusted.
It can operate at 0.9 Volt 0.8 mA.
If you use a 1.5 Volt 800 mAh button cell battery,
it'll last for 1000 hours, or 41 days!!!












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