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  • Users: mosfet9
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  1. mosfet9

    Proper grounding for measuring wall AC signal with oscilloscope

    Hi all, I need to simultaneously record the AC signal from two separate wall 120v AC signals with a scope. I've got a metal enclosure with two step-down transformers (neutral and hot of each input go the transformer, and ground goes to the enclosure). The secondary of each transformer goes to...
  2. mosfet9

    Material advice for microphone array mount

    Hi, I'm building a microphone array (4 small electret mics) to do field recordings of speech, and would like some advice for what materials to build the housing out of. I've built a prototype out of light wood and placed the mics into small holes that are drilled to exactly the size of the mic...

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