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I want to know how do ESD monitors work, those who detect if someone is wearing the ESD wrist band or not. The problem is that there is only one wire feedback from the wrist band so i don't know how can you measure anything from just one wire.
Do mains adaptors with the DC ground connected to earth exist? / Where could I buy one?
I am making a device which is powered from a 12V, 1A mains adaptor. The device has a high voltage DC module in it which outputs about 20kV. The way it is used, the high voltage is discharged into the air...