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Capacitance unit of capacitor

Source: Industry News Editor: PingShang Click: Release time: 2022-01-05 08:20:39

Capacitance unit of capacitor

Capacitance is a measure of the ability of a capacitor to store charge on its two plates. Its capacitance unit is Farad (abbreviated as F), named after British physicist Michael Faraday.

Capacitance is defined as: when one volt coulomb of charge is stored on the plate at a voltage of one volt, the capacitance of the capacitor is one farad. The capacitance C is always positive and has no negative units. However, Farad is a large unit of measurement and cannot be used alone. Therefore, small measurement units-multiples of Farad, such as micro Farads, nano Farads, and picofarads, are usually used.文章配图14

Capacitance standard unit

In the International System of Units, the unit of capacitance is Farad, abbreviated as law, and the symbol is F. Because the unit of Farad is too large, the commonly used capacitance units are millifarad (mF), microfarad (μF), nanofarad (nF) and Picofarad (pF), etc., the conversion relationship is:

1 Farad (F) = 1000 millifarads (mF) = 1000000 microfarads (μF)

1 microfarad (μF) = 1000 nanofarad (nF) = 1000000 picofarad (pF).

Capacitance refers to the ability to hold an electric field. Any electrostatic field is composed of many capacitors. When there is an electrostatic field, there is a capacitance. The capacitance is described by an electrostatic field. It is generally believed that an isolated conductor forms a capacitance with infinity, and the conductor grounding is equivalent to being connected to infinity and connected to the earth as a whole.

The types of capacitors can be divided into principle: non-polar variable capacitors, non-polar fixed capacitors, polar capacitors, etc. From the material point of view, they can be divided into: CBB capacitors, polyester capacitors, ceramic capacitors, mica capacitors, monolithic capacitors , Electrolytic capacitors, tantalum capacitors, etc.