Sunday, 13 May 2018

High voltage LED indicator 40-1000 VDC without additional power supply


I would like to make an indicator to show that DC bus (700VDC) capacitors are charged (be careful!).


What is the best way to make a LED indicator, which will work for a long time from 40VDC to 1000VDC without additional power supply and with minimum power losses?




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