About this document
Electret Microphone Circuit Design by Art is a document available to read on EtoBox.
The document provides information about characterizing an electret microphone. It discusses how electret microphones work by using a capacitor made from a material with permanently polarized molecules to convert sound pressure variations into voltage variations. It describes building the recommended circuit for the microphone, which includes a 680 ohm resistor. Experimenting with the circuit shows the microphone output is relatively insensitive to the power supply voltage between 1.5V and 9V. The document a
- Author
- Art
- Language
- EN