The basic principle of capacitance is to charge and discharge, and to isolate DC through communication.

1. After transformer transformer and large capacitance, play a smooth output filtering effect;

2. The parallel small capacitor at the power supply of the integrated circuit is also the same filter (filter high-frequency clutter, generally called decoupling capacitance);

3. Used in the signal input (output) part in series, as an isolation capacitor (isolated DC signal, input (output) communication signal);

4. There are many uses in differentials or capacitors, as long as you understand its principle, combined with the circuit diagram, you will easily figure out its effect;

5. Used in inductance - capacitance (LC) or resistance - capacitance (RC) circuit, repeated charge and discharge, as a shock capacitor;

Capacitors have many uses, as long as you understand its principle, combined with the circuit diagram, you will be very simple to figure out its effect. In an integrated circuit, the charge is piled up and the voltage is raised as a differential or integral capacitance.