What do you know about the capacitor?

Capacitors play an important role in circuits such as tuning, bypassing, coupling and filtering. It is used in the tuning circuit of the transistor radio and also in the bypass switch of the color television.

What role do capacitors play?

In a DC circuit, a capacitor corresponds to an open circuit. A capacitor is a component that can store electrical charge and is also one of the most frequently used electronic components.

This must be based on the structure of the capacitor. The simplest capacitor consists of plates at both ends and an insulating dielectric (including air) in the middle. After the flow, the plates are charged to form a voltage (potential difference), but due to the insulating material in the middle, the entire capacitor is not conductive. However, this situation is under the assumption that the critical voltage (burst voltage) of the capacitoris not exceeded. We know that each substance is relatively isolated. When the voltage on the substance rises to a certain level, the substance can conduct electricity. We call this tension the breakthrough tension. The capacitor is no exception. After the capacitor is broken, it is not an insulator. However, at the secondary school stage, such voltage is not visible in the circuit, so all work below the breakthrough voltage and can be considered as an insulator.

What information is available about capacitors?

1. Compensation: The capacitor used in the compensation circuit is referred to as the compensation capacitor. In the bass compensation circuit of the deck, this low frequency compensation capacitor circuit is used to amplify the low frequency signal in the playback signal. There is also a high-frequency compensation. Condensator.

2. Bootstrap: The capacitor used in the Bootstrap circuit is called Bootstrap capacitor. The standard output mode of OTL power amplifiers uses this Bootstrap capacitor mode to increase the positive half-wave amplitude of the signal by a small positive feedback.

3. Frequency divider: The capacitor in the frequency divider circuit is referred to as the frequency divider capacitor. In the loudspeaker frequency divider switch of the loudspeaker, the frequency divider condenser switch is used to operate the high-frequency and medium-frequency loudspeaker in the medium frequency band. The low-level speaker works in the low-level area.

4. Load capacity: refers to the effective external capacity, which together with the vibrating quartz determines the resonance frequency of the load. Standard load capacity values commonly used are 16pF, 20pF, 30pF, 50pF and 100pF. Load capacity can be adapted to the situation. Generally, the resonator's operating frequency can be adjusted to the nominal value.

What are the practical significance of capacitors?

There are many types of capacitors, and different types of capacitors have different functions. In central air conditioners, electrolyte capacitors are often used as filter elements in the control circuit and unpolar capacitors are used in series in the windings of the compressor (single phase Asynchronomotor) to start the winding at the engine start, the current is running ahead and exceeds the start. The current has a phase angle to obtain the start torque, making the engine easy to start.

Since capacitors have an irreplaceable role in the food processing industry. Zhejiang Zhegui Electric Co., Ltd has worked for several years to meet the need of customers from all over the world.