Capacitance is also called "capacitance", which refers to the amount of charge storage under a given potential difference, denoted as C, and the international unit is farad (F). Generally speaking, electric charges move under force in an electric field. When there is a medium between conductors, the movement of electric charges is hindered and the electric charges accumulate on the conductors, resulting in accumulation and storage of electric charges. The amount of stored electric charges is called capacitance.
Capacitance (or capacitance) is a physical quantity that expresses the ability of a capacitor to hold charge. In terms of physics, a capacitor is a static charge storage medium, and the charge may exist forever. This is its characteristic, and it has a wide range of uses. It is an indispensable electronic component in the electronics and power fields. Mainly used in power supply filtering, signal filtering, signal coupling, resonance, filtering, compensation, charging and discharging, energy storage, DC blocking and other circuits.
Capacitance unit conversionIn the International System of Units, the unit of capacitance is Farad, abbreviated as law, and the symbol is F. Commonly used capacitance units are millifarads, microfarads, nanofarads, and picofarads (picofarads, also known as picofarads). The conversion relationship is:
1 farad = 1000 millifarads = 1000000 microfarads
1 microfarad = 1000 nanofarads = 1000000 picofarads
The size of the capacitance is related to the geometrical size of the capacitor and the properties of the medium. In addition to the capacitance of capacitors, in reality, electrical equipment, circuits and components all have natural capacitance. For example, between longer power lines, longer cables have capacitance.
Unit conversion rules: unit omissions are expressed as picofarads, for example
101=10*10^1=100 picofarads = 0.1 nanofarads;
104=10*10^4=100000 picofarads = 0.1 microfarads;
105=10*10^5=1000000 picofarads = 1 microfarad.
Capacitors include ceramic capacitors-C/C, tantalum capacitors-T/C, electrolytic capacitors-E/C
1. Unit: 1 picofarad = 1×10 minus 3rd power nanomethod = 1×10 minus 6 power micromethod = 1×10 minus long power millimethod = 1×10 minus twelfth power method Pull.
2. Specifications: Defined by the length and width of the component, including 1005 (0402), 1608 (0603), 2012 (0805), 3216 (1206), etc.
3. Expression method: 103K=10×103 picofarad=10 nanofarad 104Z=10×104 picofarad=100 nanofarad 0R5=0.5 picofarad
Note: Electrolytic capacitors and tantalum capacitors are oriented, and white indicates the "+" pole. ? The unit of the capacitance value is usually: farads, in addition to often used: millifarad, microfarad, nanofarad, picofarad, the relationship between them is as follows:
1 farad=103 millifarad=106 microfarad=109 nanofarad=1012 picofarad
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