DIYbanter - View Single Post - voltage of dimmer output not reading same on two different DVM's

Ralph Mowery[_3_]

In article ,
says...

DC voltage and true RMS voltage are equivalent.
DC meters read the average, DC value of a wave.

That really should be qualified.

The way I understnd it is that the RMS voltage produces the same ammount
of heat in a resistor as a DC voltage will.

However RMS voltage could be a high peak value that will damage solid
state devices. The meter could show 5 volts, peaks could be 50 volts.

Again DC meters could read many different values depending on the meter
and wave form.