Calculate value of A (coefficient in v(t)) in voltage gen.

[anol1258]

Homework Statement

Consider an ideal voltage generator. If an ideal voltmeter is connected to the generator calculate the value of A (coefficient in v(t))

given:

v(t)=|A+BAcos(377t)|

V given

 

[rude man]

what kind of voltmeter? DC? AC? Phase-angle?

 

[anol1258]

Hmmm it isn't specified but I'm guessing the voltmeter is AC.

 

[rude man]

If it's AC, is it calibrated for sinusoidal inputs, or rms AC, or ??

This question needs an answer in order to proceed.

 

[anol1258]

I believe it is calibrated for sinusoidal inputs.

 

[rude man]

I believe it is calibrated for sinusoidal inputs.

So assume a meter that reads only + voltages (it reads negative voltages as zero), then passes the voltage thru a low-pass filter of appropriate gain, and then into a dc voltmeter.