An Electret Condenser Microphone is one of the most common types of transducers that is used to detect or measure sound signals. It consists of a parallel plate capacitor in which one plate is fixed and the other is movable (diaphragm) with a very small gap between them. When a sound wave strikes the diaphragm, it starts moving which changes the capacitance of the capacitor and causes a variable current to flow. This variable current is then filtered and processed to get the sound you want to record. It is used in noise detectors, sound recorders, activity monitors mobiles, Digital Cameras, etc.

Specifications

• Size: 6 x 2.2mm 
• Operating Voltage: 2V to 10V
• Current consumption: 0.5mA (max)
• Recommended operating voltage: 2V
• Operating Frequency: 20Hz to 16,000Hz
• Impedance: <2.2kΩ

Product Description

To use the microphone, you need to supply the microphone with at least 2V as it can take up to 10V, so you can use a 9V battery to supply power. Care should be taken as the maximum current that can be passed through the microphone is 0.5mA. The range of frequencies that the microphone can capture is from 20Hz to 16000Hz.

Additional Resources

Datasheet of Electret Microphone

Simple Microphone to speaker circuit

Package Contents

1×Electret Microphone (Condenser Mic)