SparkFun COM-08635 Electret Microphone

£1.20 inc VAT

Availability: 135 in stock (can be backordered)

Brand: SparkFun
Part Number: COM-08635
Barcode: 5055421008024
SKU: PPCOM-08635 Categories: , , Tags: ,
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SparkFun COM-08635 Electret Microphone

AnĀ Electret Condenser Microphone is a type of transducer that is used to detect or measure sound signals. It is used in noise detectors and sound recorders etc. It is essentially 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.

 

Also available all mounted with supporting circuitry on a breakout board, to easily add it to your project

Documents:

Since the datasheet isnt super clear, this polarity of microphone is important (it matters which way around you wire it). Think of it like an electrolytic capacitor – you measuring the change in capacitance when the mic detects sound

If you look at the back of the microphone you will see 2 pins. One of them looks like it is not connected to anything – that is the signal output pin. The other pin has 3 connections coming out connecting that pin to the metal case, that’s the ground.

 

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