1. Coupling

One of the main functions of capacitors is coupling, and the use of capacitors in coupling circuits is called coupling capacitors, which mainly allows AC signals to be transmitted to the next circuit.

2. Filtering

The function of capacitor in filtering is to remove a certain frequency band signal from the total signal, and generally, the larger the capacitor, the smaller the impedance, and the higher the passing frequency.

3. Compensation

Capacitor can also compensate the temperature by analyzing the influence of other components due to their inadaptability to temperature, which can improve the stability of the circuit.

4. Bypass

Capacitor can be used in fibrechannel to remove the signal in a certain frequency band, and it can also provide some low impedance paths for some parallel components in the AC circuit.

5. Decoupling

Decoupling capacitor actually takes the output signal as the filtering object and acts as a "battery", which can meet the ` change of the current of the driving circuit and avoid the coupling interference between circuits.

6. Rectification

The capacitor also has the function of rectification, which can turn on or off the semiconductor switching element at a predetermined time, thus making the circuit pass more stably.