Hello, i got my Atlas ESR Plus (ESR70) - Capacitor Analyser. So even when it has integrated voltage discharge that's for low voltages.
So I decided to make one using arduino nano, some lcd with bargraph etc.
How do I measure voltage up to 1000V safely using arduino, while the 470Ohm 5W resistor
as recommemded here:
discharges capacitor being probed ? I need to use opto coupler. But what and how to use?
The probes must have no polarity too.