Sunday, March 07, 2021

Microphone amplifier for signal generator external modulation input

 Needed a small microphone signal amplifier to connected to the external modulation input of the Wavetek 3001 signal generator so I can test an AM de-modulator.

Nothing fancy here, just basic electret microphone amplifier. Microphone is of the basic type sold for computers voice calls.

 The diagram/schematic:


The result:

Works OK for basic testing, maybe in the future will join a noise and dual tone generator.

Have a nice day!