1, color code inductors
Color code inductor is an inductor with a fixed inductance, its inductance with resistance to mark the same way as color ring to mark.
2, the choke coil (choke)
Limit alternating current through the coil, said choke coil, divided high-frequency choke coil and low frequency choke coil.
3, the yoke
Deflection coil is a TV scan circuit output stage load, deflection coil requirements: high deflection sensitivity, uniform magnetic field, Q value is high, small size, low price.
4, single coil
Single insulated wire coil is wound around a circle next to the paper or bakelite skeleton. The transistor radio wave antenna coil.
5, honeycomb coil
If the system of coil winding, the plane is not parallel with the plane of rotation, but intersect at an angle, the coil called honeycomb coil. While the revolution, the number of wire bent back and forth, often referred to as off points. Advantages Honeycomb around the law is small, distributed capacitance, inductance and large. Honeycomb coil winding machines are to use the hive around the system, the more break points, distributed capacitance smaller
6, the ferrite core and iron core coil
Inductance coil size and presence or absence of core related. Inserting a ferrite core in the air-core coils, increase the inductance and increase the quality factor of the coil.
7, copper core coil
Copper core coil more in the VHF range of applications, the use of rotating copper core position in the coil to change the inductance, this adjustment is more convenient, and durable.