In this post I have explained how electret microphone devices work, through appropriate diagrams and formulas. What’s a Microphone A microphone is a device designed for transforming weak sound vibrations into tiny electrical pulses, which can be then amplified through a power amplifier over a loudspeaker for achieving a louder reproduction of the sound. The […]
Electret
Using Electret Microphone on Computer PC
The small circuit that we propose here provides a 20 dB gain to the microphone signal, which will finally allow you to effectively use an electret microphone on your PC. Circuit Description The diagram of our circuit is reproduced in the Figure below. Don’t expect a complicated diagram with op-amps everywhere, as our circuit is […]
Explained: MAX4466 Electret Microphone Amplifier Module with Adjustable Gain
In this post we will be talking about this MAX4466 microphone amplifier module, right? So this is a tiny little circuit that can amplify weak sound signals from an electret condenser microphone (ECM). That means it is going to take a very small electrical signal from the microphone and then boost it up so we […]