In this video, we connect the LED to a 220 volt network. ATTENTION! Voltage 220 volts is dangerous to health! Observe the safety rules!
Scheme: https://drive.google.com/open?id=1RBWCHlzY1HF3IM-ij9htK4Uh1xAKG9rn
Article: http://ledno.ru/svetodiody/podklyuchenie-led-k-220-v.html
On-line calculators for radio amateurs: http://cxem.net/calc/calc.php
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