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 = 28.288V
Vdc = 0.637Vmax - 2Vdiode
Vdc = 16.6
Is there a way to compensate for the drop of voltage?
![1715748548283.png 1715748548283.png](https://forum.allaboutcircuits.com/data/attachments/310/310003-bba0b05dfe7e7726c9f218021c6715f2.jpg)
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 = 28.288V
Vdc = 0.637Vmax - 2Vdiode
Vdc = 16.6
Is there a way to compensate for the drop of voltage?
![1715748548283.png 1715748548283.png](https://forum.allaboutcircuits.com/data/attachments/310/310003-bba0b05dfe7e7726c9f218021c6715f2.jpg)