How to measure the capacitance of a digital multimeter
The pointer type multimeter can only check the quality of the capacitor (the circuit breaker disadvantage of small capacity capacitors should not be different) and roughly estimate the size of the capacitor, but cannot accurately measure the size of the capacitor. The capacitance of the capacitor generally requires a capacitance meter, digital multimeter, and specialized capacitance measuring instruments to measure. When measuring the capacitance of a capacitor with a digital multimeter, it is important to be careful. Not all capacitors can be measured, and it should be determined based on the measurement gear of the digital multimeter. Some digital multimeters have multiple capacitance measurement ranges, which can measure 2nF-2; The capacitance of tF can be measured from ⒛ nF to ⒛ 0ctF, while some digital multimeters only require a capacitance measurement gear of ⒛ 0ptF.
A digital multimeter has a range with measuring capacitance, which can be operated according to its range to measure its capacity. To select a suitable range for measurement, assuming that the capacitance is greater than the maximum range of the meter, measurement cannot be carried out.
A digital multimeter without a capacitance range can only roughly measure the quality of the capacitance, whether there is a short circuit, and whether there is capacity. By using the forbidden position of the resistance range, conducting a DC resistance test on the capacitor and conducting a charge discharge test, the capacitor can be tested for capacity and leakage.
When using a digital multimeter to measure the capacitance of a capacitor, place the digital multimeter in the capacitance range and select the appropriate range based on the size of the capacitance. After the capacitance to be measured is fully discharged, insert the capacitance directly into the test hole or touch the two probes separately for measurement. The flash screen of a digital multimeter will directly flash the capacity of the capacitor to be tested.
