Microphone Amplifier

 

This amplifies sound from a microphone.

• The output is up to 1 volt and a gain of -100
• The output can be adjusted from 0 - 100%

Supply Voltage (+V): 5 to 20 volts.

 

NOTES

• This circuit uses an operational-amplifier IC
• It is an "inverting" amplifier which means a positive input will give a negative output, and vice-verca. This will not matter in most cases.

PCB size: 51mm x 25mm