The basic principle, advantages and disadvantages of resistive and capacitive depressurization

The advantages of resistive and capacitive depressurization:

Small size; low cost.

The drawback of resistive and capacitive depressurization:

Non-isolated power supply, unsafe;

Can not be used for high-power load;

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Not suitable for capacitive and perceptual load;

Not suitable for dynamic load.

Capacitor charging and discharging principle.

Capacitance is a passive device which stores energy in the form of electric field. The charge-discharge process of capacitors is essentially the process of obtaining and releasing electrons from two parallel conducting plates.

Capacitor charging:

When the electric field intensity E in the capacitor is less than the external power supply voltage U at the two ends of the capacitor, the capacitor begins to charge. At this point, the capacitor positive electrode loses electrons, the negative electrode gets electrons, and the internal electric field E increases until the voltage U is equal to the external voltage, and the charge ends.