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The "smart hub" of Chongqing's smart city has been completed and put into operation. 42 systems in the city have been connected

The "smart hub" of Chongqing's smart city has been completed and put into operation. 42 systems in the city have been connected

2020-08-27

On August 20th, the inauguration ceremony for the completion and operation of the Chongqing New Smart City Operation Management Center was held as a fundamental, pivotal, and intensive project for the construction of Chongqing's new smart city

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The principle of supercapacitors

The principle of supercapacitors

2023-02-22

Electric double layer capacitor is a new type of capacitor based on the interface double layer theory proposed by physicist Helmholtz. It is well known that excess charges with opposite symbols appear on the surface of metal electrodes inserted into electrolyte solutions and on both sides of the liquid surface, resulting in potential differences between phases.

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Test methods for fixed capacitors

Test methods for fixed capacitors

2023-02-22

1. Detection of small capacitors below 10pF: Because the capacity of fixed capacitors below 10pF is too small, using a multimeter to measure can only qualitatively check whether there is leakage, internal short circuit, or breakdown. When measuring, a multimeter R can be selected × At 10k gear, use two probes to arbitrarily connect the two pins of the capacitor, and the resistance value should be always high. If the measured resistance value (pointer swinging to the right) is zero, it indicates that the capacitor is damaged due to leakage or internal breakdown.

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What are the classifications of capacitors?

What are the classifications of capacitors?

2023-02-22

According to analysis and statistics, capacitors are mainly divided into the following 10 categories: 1. According to structure, they are divided into three categories: fixed capacitors, variable capacitors, and fine tuning capacitors. 2. Classification by dielectric: organic dielectric capacitor, inorganic dielectric capacitor, electrolytic capacitor, electrothermal capacitor, air dielectric capacitor, etc.

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Function of capacitor

Function of capacitor

2023-02-22

In a DC circuit, a capacitor is equivalent to an open circuit. A capacitor is a device that can store electric charges and is also one of the commonly used electronic components.

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What is enamelled wire?

What is enamelled wire?

2023-02-22

The conductor is coated with a corresponding paint solution, then evaporated by solvent, solidified and cooled by the paint film. Enamelled wire can be divided into polyester enameled wire, polyester imide enameled wire, polyamide imide enameled wire, polyimide enameled wire, polyester imide/polyamide imide enameled wire, corona resistant enameled wire, as well as oily paint, acetal paint, polyurethane enameled wire, and so on. Sometimes they are also classified according to their specific uses, such as self-adhesive enameled wire, refrigerant resistant enameled wire, and so on.

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