Hi
I want to check a 1700V supply on a scope I'm trying to fix. I have it in mind to make a chain of nine 10Meg (250V-rated) resistors. I could then rely on the 10Meg input impedance of the Fluke 87V to give me a 10:1 divider, or I could add another 10Meg resistor and tap off at that point to the meter and double(-ish) the figure shown on the meter (the 'bottom' of the chain going to ground, obviously)
Other than the obvious ("don't"), any thoughts either way?
Cheers
John