This is known as the peak or crest value of an ac waveform.
Ac current measurement.
It s the maximum voltage that the ac voltage attains.
Although the same basic steps are used for taking the ac current measurement as when a normal dc measurement is taken there are a few additional points to note.
Voltage measurements taken at various points in a system vary.
The differences in the measurement result from the fact that the multimeter has to rectify the alternating waveform to enable it to measure ac current.
The difference between the highest and lowest peaks of the ac voltage.
One way to express the intensity or magnitude also called the amplitude of an ac quantity is to measure its peak height on a waveform graph.
A measurement of the largest voltage present between 0 v and the highest point on the ac cycle.
Using a multimeter to measure current is often discouraged due to the difficulty of disconnecting a part in the circuit then placing the meter in line properly so that damage does not occur.
Another way is to measure the total height between opposite peaks.
The acs712 measures current in two directions.
There are actually three ways you can measure voltage in an ac circuit.
It s certainly a valuable function on the meter but it is worth emphasizing the greater risk than for measuring voltage or resistance.
The three ways are.
In most ac voltages the peak to peak voltage is double the peak voltage.
It can be easy to blow a fuse if the meter is placed slightly improperly.
Generally speaking voltage measured in ac power systems should be within 10 and 5.
Analysis of ac voltage measurements.
In general all ac voltage sources vary from fluctuation in ac voltage over power distribution systems.
Ac current is an extremely important quantity to learn in the case of industrial.
For a digital multimeter the main difference is that the measurement type switch must be set to measure ac current rather than dc current.