I got this from market.
How to test ac voltage with a digital multimeter.
While ac voltage is rarely measured using digital multimeter it is still important at places where ac mains are involved.
It is denoted with the letter v.
We have used mastech mas830l digital multimeter.
Connect the black probe to the common jack on the multimeter.
Knowing how to use a digital multimeter makes it easy to check to see if a plug in the wall or even a surge protector is working properly.
However analog multimeters are still very easy to use and useful for testing voltage.
Measuring ac is the most common usage of a multimeter.
Most electronic devices work on dc.
You must take the following precautions.
Remove the test leads.
Now set the mode by using the knob we have to place it at ac voltage.
This instrument will let you check to see if there is voltage present on a circuit.
When different from an expected measurement voltage is more likely to be lower than normal.
The ac voltage and the dc voltage.
In case you want to hold the reading press hold on the digital multimeter device.
Start by removing the red test lead and follow with the black one.
Analysis of ac voltage measurements.
Voltage means how hard electricity flows in a circuit.
Never touch the probe tips.
Always try to put the probe in correct position.
In general all ac voltage sources vary from fluctuation in ac voltage over power distribution systems.
A multimeter is an instrument used to check for ac or dc voltages resistance and continuity of electrical components and small amounts of current in circuits.
If you don t have it please buy one from market near you or order it online from ebay or which ever site you prefer.
Placing test leads in a or ma inputs and then measuring voltage will create a short in the measurement circuit.
Then connect the red plug to the jack labeled for ac voltage.
Therefore a higher voltage means that the electricity in that particular circuit is being pushed even harder.
How to measure ac voltage with multimeter.
If you have successfully measured or tested ac voltage you can now disconnect the test leads.
If the voltage detected by the multimeter isn t what you expect you know the component isn t working and may need to be replaced.