The resistance in the circuit is represented by "R" plus a number. The main functions of resistors in the circuit are shunt, current limiting, voltage division, bias, filtering (combined with capacitance) and impedance matching.
Second, the capacitance.
Capacitor is one of the electronic components widely used in electronic equipment, which is widely used in DC isolation, coupling, bypass, filtering, tuning circuit, energy conversion, control circuit and so on. C represents the classification of capacitance and capacitor.
1. According to the structure, it can be divided into three categories: fixed capacitance, variable capacitance and fine-tuning capacitance.
2. According to the electrolytic substances, there are: organic dielectric capacitor, inorganic dielectric capacitor, electrolytic capacitor and air dielectric.
Capacitors, etc.
3. According to the purpose, it can be divided into high frequency bypass, low frequency bypass, filtering, tuning, high frequency coupling, low frequency coupling and small size.
Capacitor.
4. High frequency bypass: ceramic capacitors, mica capacitors, glass film capacitors, polyester capacitors and glass glaze capacitors.
Equipment.
5. Low frequency bypass: paper capacitor, ceramic capacitor, aluminum electrolytic capacitor and polyester capacitor.
6. Filtering: aluminum electrolytic capacitor, paper dielectric capacitor, composite paper dielectric capacitor and liquid tantalum capacitor.
7. Tuning: ceramic capacitors, mica capacitors, glass film capacitors, polystyrene capacitors.
8. High frequency coupling: ceramic capacitors, mica capacitors and polystyrene capacitors.
9. Low coupling: paper capacitors, ceramic capacitors, aluminum electrolytic capacitors, polyester capacitors and solid tantalum capacitors.
Equipment.
10. Small capacitors: metallized paper capacitors, ceramic capacitors, aluminum electrolytic capacitors, polystyrene capacitors, solid tantalum capacitors, glass glaze capacitors, metallized polyester capacitors, polypropylene capacitors and mica capacitors.