Now, LED manufacturers are taking things to ridiculous power ratings with 30, 40, and even 90 watt LEDs. Getting these high-power LEDs are no longer a problem, but powering them certainly is. [ ...

It’s not entirely clear why [Advanced Tinkering] needs a 50,000-volt power supply ... To ensure everything stays safe in the high-voltage stage, he took the precaution of potting everything ...