Real DC amperage meters always gives you Tru RMS Amps not the peak Max Amps for that you will need a special meter
170Volt is the real amplitude of 120Volt AC actually it is 169.7Volt peak Voltage and the Tru RMS is 120Volt
120×√2=169,705Volt
230×√2=325,269Volt
Warnings;
1:Using a full bridge rectefier this will be the DC peak voltage out
2:The Capacitors voltage on the AC and DC side of an full bridge rectefier most always be higher than the peak voltage
3: Only some AC and motor start an run AC capacitors comes with the Maximum RMS voltage on them 125VAC and 240VAC and so on but the VAC give you a clue if it is only V like 200V and 350V and so on this is peak amplitude capacitor isolation voltage
4:Just a reminder that any voltage above 60VAC ×√2=84,85 85VDC is high voltage and may shock and kill you actually any sparks or arks may do so by carefully around them always
