123456XX@XXX.com
400-000-00X000
What is capacitance and its classification?
来源: | 作者:electronics-101 | 发布时间: 2017-11-10 | 542 次浏览 | 分享到:
The so-called capacitor, is to accommodate and release the electronic components of charge. The basic working principle of the capacitor is charging discharge, of course, rectification, oscillation and other functions. In addition the capacitor has the advantages of simple structure, mainly consisting of two electrodes and caught in the middle of the insulating medium, so the capacitor type is mainly decided by the electrode and the insulating medium.

The so-called capacitor, is to accommodate and release the electronic components of charge. The basic working principle of the capacitor is charging discharge, of course, rectification, oscillation and other functions. In addition the capacitor has the advantages of simple structure, mainly consisting of two electrodes and caught in the middle of the insulating medium, so the capacitor type is mainly decided by the electrode and the insulating medium. The use of capacitors is very large, mainly as follows:
1. DC isolation: the function is to prevent the DC pass and let the communication through.
2. bypass (decoupling): provides low impedance paths for some parallel components in AC circuits.
3. coupling: as the connection between the two circuits, the AC signal is allowed to pass through and transmit to the next level
4. filter: This is very important for DIY, the capacitance on the graphics card is basically this role.
5. temperature compensation: to compensate for the influence of other components on the temperature is not enough, and to compensate for the improvement of the stability of the circuit.
6. timing: capacitor and resistor in conjunction with, determine the time constant of the circuit.
7. tuning: tuning frequency related circuits, such as mobile phones, radios, televisions.
8. rectifier: switch on or off the semi closed conductor at a predetermined time.
9. energy storage: store electrical energy for release when necessary. Such as camera flash, heating equipment and so on. Today, the energy storage level of some capacitors is close to the level of lithium batteries. A capacitor store power can be used for one day for a mobile phone.