Q:What is the use of capacitors?

As a passive component of the capacitor, its role is nothing more than the following; applied to the power circuit, to achieve bypass, decoupling, filtering and energy storage role, the following classification:

Q:What kind of capacitance can be divided into?

Oil and paper capacity. It is the paper dielectric capacitor immersed in a specially treated oil, can enhance its pressure. It is characterized by large capacity, high pressure, but the larger. Glass glaze capacitors to glass glaze for the media, with the advantages of ceramic capacitors, and smaller, high temperature.

Q:What is the relationship between capacitance and voltage?

The larger the capacity of the capacitor, the larger the voltage, the smaller the capacity (uF). Since q = Cu, q is the current charge number of the capacitor, which is substantially proportional to the volume of the capacitor

Q:How to identify high voltage capacitors is good or bad

There is a series in 220v AC power inside, see if the light bulb can be normal light. Determine if the capacitor has capacity. Whether the initial test is normal.

Q:What is the electrolytic capacitor inside?

Electrolytic capacitor features three: the price than other types have overwhelming advantages, because the composition of electrolytic capacitors are common industrial materials, such as aluminum and so on.

Q:Low voltage capacitor voltage 0.45 and 0.4 What is the difference between usage

Can be used in the low-voltage three-phase power lines on the line, but the level of different pressure, connected to the 400V line, 450V capacitor capacity is 79% of rated capacity, 400V capacitor capacity is rated capacity. In the use of life on the 450V longer than 400V

Q:What is the capacitor, what is the use, where is there?

The role of the capacitor filter, coupling, bypass, decoupling function. Capacitors are mainly used for AC circuits and pulse circuits, in the DC circuit capacitors generally cut off the role of DC. Capacitors do not produce nor consume energy, are energy storage components.

Q:What is the difference between polyester film capacitors and ceramic capacitors?

The frequency characteristics of the capacitor is better than the polyester, the capacitance and tgδ with the frequency of small changes can be used in low-voltage AC-DC circuit.

Q:On the ground resistance, what role the capacitor

High-frequency vibration elimination: the capacitor used in the high-frequency vibration circuit called high-frequency vibration capacitor, in the audio negative feedback amplifier, in order to eliminate the vibration may occur high-frequency self-excited, the use of this capacitor circuit to eliminate the amplifier Possible high frequency whistling

Q:How to judge the capacitor is good or bad?

10pF below the fixed capacitor capacity is too small, with a multimeter to measure, only qualitative check whether there is leakage, internal short circuit or breakdown phenomenon.