1. Functions and Application of Capacitor
What is a capacitor?
The capacitor is usually referred to as an electric capacity, represented by the letters C.
Definition one: Capacitors, as its name suggests, it is a 'container mounted electric', is a
charge accommodate device. Capacitance is the extensive use of electronic equipment,
electronic components, it is widely used in circuit interval through AC coupling, bypass,
filtering, tuning circuit, energy conversion and control and so on. There is plastic film
capacitor and ceramic capacitors etc. Definition two: any two conductors (including lead) that
are insulated and close to each other can constitute a capacitor.
The Function of Circuit Capacitor
The fundamental function of the capacitor is charging and discharging, but the many circuit
phenomena generated by such a basic charge and discharge action of extending make the
capacitor have various different purposes, for example, in the electric motor, and we use it to
produce a phase shift; in photoflash, we use it to generate the instantaneous discharge of the
high energy, and the like; in electronic circuits, especially the use of capacitors have different
nature, there are many different purposes, although there are very different place, but its role
from the charging and discharging . Capacitance coupling circuit is called coupling
capacitance, in the extensive use of resistive and capacitive coupling amplifier and the
capacitive coupling circuit capacitor circuit, since blocking flow of exchange role. Dividing
capacitor: a capacitor in the frequency dividing circuit is called divider capacitors, the
frequency dividing circuit in the speaker's speaker capacitance circuit using frequency
division, so that the high-frequency speaker works at high frequencies, the IF speakers work
in the band, the low frequency the speakers are working in low-frequency bands. The high-
voltage ceramic capacitor is generally used in large-scale high-voltage electrical appliances.
Capacitor Applications

2. The extensive use of capacitors in various industries, so that the market of domestic
capacitors is very broad. The application of capacitor has a very wide application. Shunt
capacitor is formerly known as phase shift capacitor compensated power system reactive
power inductive load, mainly used to improve the power factor, improve voltage quality,
reduce line losses; series capacitor connected in series with power frequency high voltage
transmission and distribution lines to the distribution of the compensation circuit inductance,
improve system static, dynamic stability, improve the quality of the line voltage, lengthen the
transmission distance and increase the transmission capacity; breaker capacitor is formerly
known as equalizing capacitor. Parallel in EHV circuit breaker on the fracture from equalizing
role, so that the voltage between each fracture in the process of breaking and disconnecting
is uniform, and can improve the interrupter of the circuit breaker characteristics and improve
breaking capability.
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