Mains LEDs & building a powerful LED light with them

Today let's test some mains voltage LEDs. Those are called integrated driver LEDs or smart COB (chip on board) LEDs and they are designed to be connected directly to AC mains voltage. They come in 110V or 220V version, cool white or warm white version, and many power ratings (10W, 20W, 30W, 50W, 70W, 100W, 150W, 200W). Let's reverse engineer their internal schematic, let's try to build a powerful LED light with them and also try some modifications.
My previous video about a mains LED:
• Mains Voltage LED (and...
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