How to judge whether the DC voltage of the multimeter is normal?
To judge whether the DCV range of the multimeter is normal, switch the multimeter to the required DC voltage range when testing, insert the test leads according to the instructions, connect the detection source, and read the reading on the LCD.
The method of judging whether the DC voltage gear DCV of the multimeter is normal
The DC voltage range of the multimeter is DCV
When testing, you must first find the testing source. Because it is qualitative and quantitative measurement, there are many testing sources available. The household testing sources include 1.5V alkaline/carbon batteries (No. 1, No. 5/AA, No. 7/ AAA), 1.2V rechargeable battery, mobile phone charger, power adapter, etc.
When testing, turn the multimeter to the required DC voltage level, insert the test leads according to the instructions, connect the testing source, and read the reading on the LCD, as long as the measured value is around the nominal voltage. .
Note, to repeat, it is qualitative plus a little quantitative measurement, so these sources can be used, because the voltage of these sources is not very stable, like a 1.5V battery, the new battery may reach more than 1.6V, and the old battery may only have zero point a few volts.
