Electret Microphone Circuit Capacitor

Electret condenser microphone amplifier circuit.

Electret microphone circuit capacitor.

This electret has a fixed charge c and is embedded between the two electrodes. The type of electret microphone we will use is a 2 2kω electret microphone that requires only 2 2v of power. This is another a circuit diagram of homemade mic speaker amplifier using lm386. This is the best and interesting circuit for the beginner.

The distance between the plates is directly proportional to sound present in the environment. 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. Please note that the capacitor component shown in the electret capsule schematic above is represented by the pick up plate the electret material which together create a capacitor.

The resistor and capacitor needed can easily be obtained from most electronic online retailers. This is small and powerful for a low power supply. This is a microphone that suitable for most applications including for use with a computer. The electret along with the two electrodes takes the form of a sensitive variable capacitor whose outer surface responds to sound vibrations giving.

The electret microphone has two plates inside it just like a capacitor.