will this connection for the microphone okay?

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Discussion in 'The Projects Forum' started by kirayamato_143, Sep 15, 2011.

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  1. Sep 15, 2011 #1
    kirayamato_143

    Thread Starter Member

    Jan 23, 2011
    59
    0
    the first diagram is connected to a three terminal microphone but we were able to find a two terminal microphone only,, will our connection be alright?
     
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  2. Sep 15, 2011 #2
    ifixit

    Distinguished Member

    Nov 20, 2008
    649
    117
    Yes that's is okay. However, you may need an RC filter in the V supply (of either circuit) between the 2K2 and 22K resistors. This will ensure that amplifier signal, that has gotten into the supply rail, will not feedback into the amplifier input via the mic bias circuit and cause oscillations.

    Regards,
    Ifixit
     
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  3. Sep 17, 2011 #3
    kirayamato_143

    Thread Starter Member

    Jan 23, 2011
    59
    0
    thanks Ifixit noted your response
     
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