Voltmeter in rms please

112

01:26:21

It would be very useful if the V(oltmeter) could have a configuration setting to show rms values like a "normal" DMM does.  Try switching between the 10 Vdc supply and the 10 Vac (peak to peak). I can already "see" the waveform between the resistors (blue) with AC. I would like to see an rms output value similar to the display when the DC supply is selected.

published 10 years ago

lmccoig

10 years ago

I thought volunteer did already? Oscilloscope needs peak to peak measurement.

hurz

10 years ago

"Normal" DMM just do that correct for sine wave. For any other wave form most DMMs do that wrong.

MarkOfZero

10 years ago

Yes, but that is o.k. "Meters" are different from o-scopes.

hurz

10 years ago

If you are just to lazy to calculate the rms value, then place in parallel to the voltmeter a 1.41MOhm resistor and read out the current e.g. 3.54uA is 3.54Vrns. And remember, this works only for sine wave. Hope this makes life easier.

hurz

10 years ago

Check this to see how complex true rms measurement actually is http://everycircuit.com/circuit/5681185224130560

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.