Electret Microphone Circuit Capacitor

This is another a circuit diagram of homemade mic speaker amplifier using lm386.

Electret microphone circuit capacitor.

The electret microphone operates in the range of 1 5 10v typically 2v and the current between the jfet s source drain ground output is usually max. An electret is a stable dielectric material with a permanently embedded static electric dipole moment which due to the high resistance and chemical stability of the material will not decay for hundreds of years. This electret has a fixed charge c and is embedded between the two electrodes. The resistor and capacitor needed can easily be obtained from most electronic online retailers.

The electret along with the two electrodes takes the form of a sensitive variable capacitor whose outer surface responds to sound vibrations giving. Electret condenser microphone amplifier circuit. This is a microphone that suitable for most applications including for use with a computer. This is small and powerful for a low power supply.

The diaphragm is made of thin teflon material and is also termed as electret and hence the name electret mic. The distance between the plates is directly proportional to sound present in the environment. The electret microphone has two plates inside it just like a capacitor. An electret microphone is a type of electrostatic capacitor based microphone which eliminates the need for a polarizing power supply by using a permanently charged material.

This is the best and interesting circuit for the beginner.