Biasing Elect Micrphone

Discussion in 'General Electronics Chat' started by crazyengineer, Mar 10, 2012.

  1. crazyengineer

    Thread Starter Member

    Dec 29, 2010
    156
    2
    The one thing that always confused me when using elect micrphone is how to properly bias them. Can anyone explain how to accomplish this?
     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    An electret microphone uses 500uA at a few volts. 9V through a series 10k resistor works well.
    3V through a series 3k resistor reduces the output level to about half.
     
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