电子元件检测好坏方法(国外英文资料).docVIP

电子元件检测好坏方法(国外英文资料) How to detect electronic components 1R resistance: it can be measured with an ohm bar. It can be measured by two feet. The resistance of ordinary chip resistors can be replaced by resistors of the same resistance as those of the resistor: 330 Europe can use 220 European or 470 European substitution insurance resistance 0 Europe can be rated current near the insurance resistance instead of, or with less resistance to ordinary Resistance or 0 ohm common patch resistor for emergency replacement 2C capacitor: commonly used unit UF: first short circuit discharge, and then use diode file regardless of positive and negative, and its feet, the value will gradually increase until infinity 1, Then, the value of the write point will be increased from negative to infinity. Then, the electrolytic capacitor OK. If the value changes slowly or stops at a certain value, the leakage or poor performance of the electrolytic capacitor is explained. If you continue to show infinity, explain the open circuit; Always show 0 indicating short-circuit. principle because there is a battery in the multimeter to charge it, it should have a charging process # capacitor surface unlabeled voltage value, the voltage value is usually 50V. as the surface value is 22 16V# Damage of electrolytic capacitor can be replaced by an electrolytic capacitor that is not less than the original capacitor and has a capacity similar to that of the original capacitor. If the 6.3V/1000UF is available Replacement of 10V/1000UF or 6.3V/1500UF. Common SMD ceramic capacitors can be made with patch capacitors of the same color as emergency Chip ceramic capacitors connected to both ends of the crystal, preferably with the same capacitance, otherwise the clock may be inaccurate or not Startup fault $ 3L inductance: commonly used unit UH: use diode to measure its two feet to beep effect, measure a conductive line together In the motherboard, as long as the patch size is similar to the inductor, it can