Microphone to LED circuit

338

04:37:08

The source can be 3.7v battery

NPN BJT transistor

10 or 20K Resistor

LED's are connected on the opposite side

PNP does not exist, the base of the NPN will be connected to the Mic out + and the NPN emitter will be connected to the Mic out -

But since Everycircuit does not have microphones, I had to connect a PNP to make the effect of voice ON/Off

published 4 years ago

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