Talk about the component basis of the capacitor

The creation of electronic technology requires a large number of capacitors that play a variety of functions in electronic circuits. Similar to a resistor, it is generally called a capacitor and it is represented by the symbol C. As we all know, a capacitor is a "container of charge." Even though there are many types of capacitors, their basic organization and principles are similar. The metal center close to the capacitor is separated by a substance and forms a capacitor. The two metals are called current collectors, and the material during the period is called medium. Capacitors also distinguish fixed capacitors from variable capacitors.

The ability of different capacitors to store charge is also different. The amount of charge stored when a capacitor is applied with a DC voltage of 1 volt is called the capacitance of the capacitor. The basic unit of capacitance is farad. But in fact, fara is a very common unit, because the capacity of the capacitor is often much smaller than 1 farad, commonly used μF, nF, pF, etc. Their relationship is: 1F = 1000000μF 1μF = 1000nF = 1000000pF = 105 in the electronic In the circuit, the capacitor is used to block the direct current through the AC, and also used to store and release the charge to act as a filter and smooth out the output ripple signal. Small-capacity capacitors are commonly used in high-frequency circuits such as radios, transmitters, and oscillators. Large-capacity capacitors are often used for filtering and storing charge. And there is also a feature, generally more than 1μF capacitors are electrolytic capacitors, and 1μF capacitors are mostly ceramic capacitors, of course, there are other, such as monolithic capacitors, polyester capacitors, small-capacity mica capacitors.