How to make a pre-amp for a electret? microphone

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I have a couple of microphones (I think) that look like this:

Arduino_forum_191223a.png


Arduino_forum_191223b.png


I'm not at all sure how to wire them up, but I used this circuit for a sound detector and it seemed to work:

Flash_Detector_Circuit.webp

If there are any egregious errors, please let me know
 
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