Table circuit voltage electric lines


Posted on Mar 28, 2007

Voltmeter by the measuring mechanism in a given circle and moving coil in series to configure certain additional resistance. Nl is constant circle, N2 for the moving coil, R., Rz is additional resistance, U1, U2 to limit the amount of voltage.


Table circuit voltage electric lines
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When the additional resistance R is greater than the fixed and movable solid inductance coil, the coil is fixed and moving coil current effective value I = U / R wherein U- RMS measured voltage; additional resistance Nepal a voltmeter. Voltmeter deflection angle using the formula a = KU / Rz obtained, visible, proportional to the square pointer deflection angle and the measured RMS voltage, so the scale is not uniform indexing. Similarly, the electric line voltage meter can measure the DC voltage and AC voltage sinusoidal and non-sinusoidal AC voltage has a valid value. .




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