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To measure phase angle on a scope, connect the two inputs to the two sources, trigger off of one, and watch both. Measure the period of one and compare crossover difference with the other as a percentage of the period of the first, times 360 degrees.

Make sure the peak to peak offset for both inputs is equal, otherwise the crossover voltage won't be right.

Note that the period is 100% and is equivalent to 360 degrees. One way to make the calculation easier is to adjust the horizontal calibration so the first input has a period equal to 36 minor divisions - each division will equal 10 degrees in this case.

Also note, if you are comparing voltage and current, that your polarity is correct. This can be an issue if you are measuring across a small series resistor - the high side is voltage and the high to low side differential is current - but it is inverted.

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Q: How to measure phase angle on a scope?
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What is phase angle of a resonant circuits?

The current through a resonant circuit is (in general) out of phase with the voltage. One measure of the phase angle is this angle. At resonance the phase angel is near zero so it can be used as a parameter to drive a self-tuning mechanism.


How you measure power factor in three phase load by two wattmeter method?

First of all, you can only measure power factor of a three-phase load, provided that it is balanced load. The power factor can then be found by determining the cosine of the phase angle, using the following equation:tan (phase angle) = 1.732 ((P2-P1)/(P2+P1))...where P1 and P2 are the readings of the two wattmeters.


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The phase angle is defined as the angle by which the load current leads or lags the supply voltage.For a purely-resistive load, the phase angle is zero, because the load current is in phase with the supply voltage.For a purely-inductive load, the phase angle is 90 degrees lagging.But few loads are either purely-resistive or purely-inductive; typically, most loads are resistive-inductive. This means that, typically, the phase angle lies somewhere between zero and 90 degrees.

Related questions

What is phase angle of a resonant circuits?

The current through a resonant circuit is (in general) out of phase with the voltage. One measure of the phase angle is this angle. At resonance the phase angel is near zero so it can be used as a parameter to drive a self-tuning mechanism.


How you measure power factor in three phase load by two wattmeter method?

First of all, you can only measure power factor of a three-phase load, provided that it is balanced load. The power factor can then be found by determining the cosine of the phase angle, using the following equation:tan (phase angle) = 1.732 ((P2-P1)/(P2+P1))...where P1 and P2 are the readings of the two wattmeters.


How do you convert j equations to phase angle equation?

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What is the relationship between the measure of an angle and the reflex measure of the angle?

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The measure of the obtuse angle would then be double that of the acute angle.


What is the difference between phase angle and phase difference?

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