I turned my house upside down trying to find a 9v battery, turns out my multimeter is powered by one. Used that, no flickering whatsoever. So it's just the noise in the line from the AC I would guess.
I turned my house upside down trying to find a 9v battery, turns out my multimeter is powered by one. Used that, no flickering whatsoever. So it's just the noise in the line from the AC I would guess.