Views: 4 Author: Site Editor Publish Time: 2018-04-03 Origin: Site
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;
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.
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.