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Why should electrolytic capacitors be activated? - News

Why should electrolytic capacitors be activated?

659 Published by at November 23,2019

Electrolytic capacitors are placed for too long. How to activate electrolytic capacitors becomes a key factor in the service life. Large-capacity electrolytic capacitors should be placed for half a year or more. In the case of re-use, they must be activated to use them, otherwise they may cause damage or Use life.

Electrolytic capacitor application

Polar electrolytic capacitors usually function as power supply filtering, decoupling, signal coupling, time constant setting, and DC blocking in power supply circuits or intermediate frequency and low frequency circuits. Generally, it can not be used in the AC power supply circuit. When used as a filter capacitor in the DC power supply circuit, the anode (positive electrode) should be connected to the positive terminal of the power supply voltage, and the cathode (negative electrode) should be connected to the negative terminal of the power supply voltage. Otherwise it will damage the capacitor.

Non-polar electrolytic capacitors are commonly used in speaker divider circuits, television S correction circuits, and start-up circuits for single-phase motors.

Electrolytic capacitors are widely used in household appliances and various electronic products. They have a large capacity range, generally 1~1000μF, and the rated working voltage range is 6.3~450V. The disadvantage is that the dielectric loss and the capacity error are large (the maximum allowable deviation is +100%, -20%), the high temperature resistance is poor, and the storage time is long and easy to be invalid.

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