How to judge the quality of chip capacitors
There are four main methods to measure the quality of chip capacitance, which are composed of a small part of chip capacitance. The circuit measurement method of chip capacitance is briefly discussed.
Method 1: Generally, the resistance value of the chip capacitor is infinite, and it is replaced by an abnormal resistance value, the capacity becomes smaller, and the multimeter cannot measure it, so replace it directly.
Method 2: A safe method is to measure the two ends of the capacitor with the two poles of the multimeter grounded and the other pin to react to the short circuit separately.
Method 3: If the chip capacitor is short-circuited, it can be judged by online measurement with a multimeter. If the circuit is open, because the capacitance is too small to be measured with a multimeter, you can use a pen to connect the 220V live wire, put the pin of the chip capacitor on the pen cap, and check whether the neon bulb glows, and the light-emitting capacitor is good. Otherwise, disconnect the circuit. 220V voltage, but not in the board experiment.
Method 4: The resistance value is infinite, the resistance value is zero call difference, and other values should have some small changes.
