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Re:LEDs may cause retinal toxicity at occupational domestic ... by lightedman on Thursday January 05, 2017 @09:10PM (#13333346)
Yup, same 60hz power mains, it's a simple 10:1 step-down transformer with a resistor and filter cap wall-wart. My camera is recording at 29.97 FPS so you get to watch essentially which sets of diodes on the rectifier are operating on the waveform peak/trough (or would actually see which ones had I had this on an o-scope.) The weird star-trek transporter effect is just the intensity of the lights screwing with the camera + the progressive-scan nature of the camera sensor.

Here's one directly on the mains power. NO CONTROL CIRCUITRY.

https://www.youtube.com/watch?v=AE9QkHmeA-o

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