Ac Current Measurement

There are actually three ways you can measure voltage in an ac circuit.

Ac current measurement.

The acs712 measures current in two directions. Generally speaking voltage measured in ac power systems should be within 10 and 5. 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. This is known as the peak or crest value of an ac waveform.

For a digital multimeter the main difference is that the measurement type switch must be set to measure ac current rather than dc current. Another way is to measure the total height between opposite peaks. When different from an expected measurement voltage is more likely to be lower than normal. Ac current is an extremely important quantity to learn in the case of industrial.

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. In general all ac voltage sources vary from fluctuation in ac voltage over power distribution systems.

Analysis of ac voltage measurements. 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. 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. It can be easy to blow a fuse if the meter is placed slightly improperly.

A measurement of the largest voltage present between 0 v and the highest point on the ac cycle. It s the maximum voltage that the ac voltage attains. It means that if we sample fast enough and long enough we sure to find the peak in one direction and the peak in another direction as the acs712 have 5 μs output rise time in response to step input current. Figure below peak voltage of a waveform.