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. This is a microphone that suitable for most applications including for use with a computer. A very basic circuit to get started with microphone is shown below. Electret condenser microphone amplifier circuit.

The distance between the plates is directly proportional to sound present in the environment. The diaphragm is made of thin teflon material and is also termed as electret and hence the name electret mic. 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 the best and interesting circuit for the beginner. This is small and powerful for a low power supply. The electret microphone has two plates inside it just like a capacitor. This electret has a fixed charge c and is embedded between the two electrodes.

The electret along with the two electrodes takes the form of a sensitive variable capacitor whose outer surface responds to sound vibrations giving.