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Common causes of damage to the power adapter
 
Jun 08,2023, 607
With the prominence of individual savvy cell phones, power adapters have become one of the fundamental necessities of life. In everyday use, the power adapter will be harmed. What are the normal reasons for power adapter harm?

The principal type: the result voltage is excessively high. The result voltage is excessively high and by and large comes from the managed testing and voltage guideline control circuit. In the shut control circle framed by DC yield, testing resistor, blunder examining enhancer like TL431, optocoupler, power control chip and different circuits, any of the parts will make the result voltage rise.

The circuit is ordinary and there is no result voltage. The circuit is typical and no result voltage shows that the exchanging power supply isn't working or has placed the insurance state. In the initial step, check the worth of the beginning voltage of the beginning pin of the power control chip. Assuming there is no beginning voltage or the beginning voltage is excessively low, check whether the outside parts of the beginning pin and the beginning resistor are spilling. Assuming the power control chip is typical, the shortcoming can be immediately identified through the above observing. In the event that there is a beginning voltage, the result of the estimation control chip has a high or low change at the moment of power-on. Assuming there is no leap, it demonstrates that the control chip is harmed, the fringe swaying circuit part is harmed or the insurance circuit is broken, and the substitution control is performed. The chip, really look at the fringe parts, actually take a look at individually; in the event that it is a leap, as a rule, the switch is blemished or harmed.

Second: line disappointment. Line shortcomings, including power rope harm, non-stimulation, unfortunate contact oxidation, and so forth. Center around checking whether the info and result lines are powered. Assuming the line is flawed, you can address it by supplanting the power string.

The third sort: protection consumed or blown. Fundamentally check the rectifier span, every diode, switch cylinder and huge channel capacitors on 300 volts. This might make the protection consume and darken, or it could be brought about by an issue with the counter impedance circuit. It is especially critical that the power supply control chip and the ongoing sense resistor are normally worn out because of the breakdown of the switch tube. The thermistor is additionally effectively worn out along with the protection.
 
 
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