1. Use the resistance range of a pointer multimeter to roughly measure the charging and discharging time: the red and black test leads are in contact with the two poles of the capacitor respectively. If the needle rises quickly and then slowly falls back to the original position, it is a good capaci

Film capacitors have unique application advantages in many power electronics fields. Film capacitors have the characteristics of high voltage, high capacitance, and long service life, and the structural design of the film ensures that the capacitor has good self-healing properties.In the dc link sce

1. Look: Check whether the capacitor is bulging or swelling;2. Listen: Connect the motor and listen to see if there is a buzzing sound from the motor. Turn the rotor by hand to rotate slowly and weakly;3. Smell: Some capacitors are burnt due to excessive current and have a burning smell on the surfa

1. Use a multimeter to measure the resistance of any two of the three wires. Find the MAX resistance and mark it with AC;2. Connect the capacitor to AC;3. Find the 2 wires (AB or BC) with the MIN resistance value and connect them to the 220 power supply.If the electric fan rotates reversely, connec

How to purchase air conditioner capacitors1. When purchasing a capacitor, first observe the appearance of the capacitor to see if it is deformed or cracked. If so, do not buy it. There must be quality problems. In addition, you should also pay attention to see if it is the same model as the previous

Measurement methods: 1. Use the resistance range of the pointer multimeter to roughly measure the charging and discharging time: the red and black test leads touch the two poles of the capacitor respectively. If the needle rises quickly and then slowly falls back to the original position, it is a go

Generally, capacitors are commonly used in motors for starting single-phase motors. This type of capacitor is also called starting capacitor.From the perspective of the circuit principle, it plays the role of phase shifting, because the single-phase motor only has one set of running windings, and th

1. Use a multimeter to measure the resistance of any two of the three wires. Find the MAX resistance and mark it with AC;2. Connect the capacitor to AC;3. Find the 2 wires with MIN resistance value (AB or BC) and connect them to the 220 power supply. If the electric fan rotates reversely, connect th

How to buy air conditioner capacitors1. When purchasing a capacitor, first observe the appearance of the capacitor to see if it is deformed or cracked. If so, do not buy it. There must be quality problems. In addition, you should also pay attention to see if it is the same model as the previous one.

There are safety capacitors, super capacitors, ceramic capacitors, electrolytic capacitors, and film capacitors in the capacitor family. Among them, there are many types and sizes of film capacitors. According to the plastic film, they are divided into polyethylene film capacitors, polypropylene fil