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A metallized film capacitor is a metallized film capacitor composed of a double-sided metallized polypropylene film and a non-metallized polypropylene film that are rolled or laminated.

The film capacitor has many excellent characteristics, so it is an excellent capacitor...

CBB capacitors are polypropylene film capacitors and have no polarity. There is no need to distinguish between positive and negative poles. Among the common types of capacitors, only electrolytic capacitors need to distinguish between positive and negative poles...

When the single-phase motor is working, it will involve the problems of starting capacitor and running capacitor. Because single-phase electricity is different from three-phase electricity, a single-phase motor cannot form a rotating magnetic field when it is started, and uses the characteristic of the current in the capacitor to generate a rotating magnetic field to start the motor...

When the motor starts, a starting capacitor with a larger capacitance is disconnected from the circuit under the action of the centrifugal switch to complete its task, leaving the running capacitor still connected in series in the starting winding of the motor to work...

Metal film CBB capacitors have high reliability and self-healing. As long as the circuit design is reasonable and the specifications are selected correctly, the capacitor is not easily damaged...

CBB capacitors use a metal foil as an electrode, which is overlapped with polypropylene film from both ends and wound into a cylindrical structure. The principle is the same as that of polyester capacitors...

The safety protection performance of the CBB capacitor, after the capacitor is charged, the power supply is closed, and the charge in the CBB capacitor can still be stored for a long time. This charge is sufficient to cause electric shock or damage the connected equipment...

Let us first assume that there are two electrode plates placed parallel to A and B. The gap between them is made of insulating material such as air. Then a switch S is connected to the DC source E in the middle...

Running capacitance: it is to form an alternating magnetic field by connecting the alternating current to the secondary winding after phase shifting...

CBB capacitors mainly have the following advantages: extremely low loss; low dielectric absorption coefficient; high insulation resistance; good frequency characteristics; excellent self-healing and high stability...

The accuracy of the capacitor mostly refers to the error range of the capacity. Why does the accuracy of the capacitor exist? This is because the capacitor produced will always have a certain error from the original specified capacity...

1. General characteristics parameter selection requirements

(1) Model

Generally used in the circuit for low frequency coupling, bypass decoupling, etc. When the performance requirements are not strict, paper dielectric capacitors and electrolytic capacitors can be used...

The discharge process is the process of discharging the stored charge by the capacitor. When the charging capacitor is in a closed path without a power source, the charge on the negatively charged metal plate will be positively charged under the action of the electric field force...

The capacitor is a complicated thing because it is composed of many basic components. Due to the raw materials and manufacturing process, the capacitor medium produced by many small factories is prone to impurities, mechanical damage, pinholes, and low cleanliness...