Chizhevsky ion generator PSU full build
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eBay clock kit. Full build and setting guide.
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USB to PIR to LED-string interface PCB.
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Live-build 3kV positive ion dust collector PSU.
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Exploring a popular Japanese air purifier.
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Building the Dept of Villainy LED neon controller.
36:37
JUGEE battery teardown full size video.
25:44
DIY air ioniser with wide voltage range
29:03