Simple classification of metal film capacitors and other capacitors (II)

Type 2: classified according to the structure of the capacitor.

Fixed capacitors: capacitors that cannot be changed by capacitance.

2. Variable capacitors and fine tuning capacitors: capacitors that can be manually adjusted within a certain range and a small range of electrical capacity. It can also be divided into filter capacitor, coupling capacitor and bypass capacitor according to the purpose. In summary, in general electronic circuits, capacitors are basically fixed capacitors, fine tuning capacitors and electrolytic capacitors.

The metal film capacitor is a thin layer of metal that evaporates directly on the plastic film as an electrode. The metal layer on the evaporation coating is thinner than the normal metal foil, that is, the metallized film capacitor. Metal film capacitors are generally used in low frequency circuits, while CBB capacitors in metal film capacitors are used in many circuits and their performance is better.