ammeter

Hello I have a DC voltmeter and I would like to design a simple circuit to that can allow measuring the RMS AC voltage on the same meter. I was wondering if using a bridge rectifier is good practice or does it have any drawbacks? The voltage range is 0-20Vrms, so: Vmax = Vrms/0.707 Vmax =...

The crude diagram represents a current limiting ("dim bulb") setup. The mains pass through a DPST light switch, then onto a duplex outlex, where the bridge between the Line terminals has been broken. The box at the top (4 circles) represents a power strip which allows various bulb combinations...