Inductor (Inductor) is able to convert electrical energy into magnetic energy stored in the components, with AC to prevent the passage of DC through the smooth passage of the characteristics of the higher the frequency, the greater the coil impedance. There are several common inductors:
Single-layer coil: single-layer coil is insulated with a circle around the circle around the paper tube or bakelite skeleton. Such as transistor radios and medium wave coils.
Honeycomb coil: If the coil is wound, the plane is not parallel to the rotation surface, but intersect at an angle, this coil is called the honeycomb coil. The rotation of a week, the number of wire back and forth bending, often referred to as the number of folding points. Honeycomb common mode chokes around the advantages of small size, distributed capacitance, and inductance. Honeycomb-type windings are used to winding the hive to the system, the more the break point, the smaller the distributed capacitance.
Ferrite core and iron powder core coil: the inductance of the coil size and whether the core. Insert the ferrite core in the air core coil, can increase the inductance and improve the coil quality factor.
Copper core coil: copper coil in the application of more short-wave range, the use of rotating copper core in the coil position to change the inductance, this adjustment is more convenient and durable.
Color code inductance coil: is a high-frequency inductance coil, which is wrapped around the core in some enameled wire and then encapsulated with epoxy or plastic. Its operating frequency is 10KHz to 200MHz, inductance is generally between 0.1uH to 3300uH. The color code inductor is a fixed inductance inductor, the inductance of the method of marking the same as the resistance to the color ring to mark. The unit is uH.
Choke ring (choke): limit the AC through the coil called choke ring, sub-high frequency choke ring and low frequency choke ring.
PFC inductors
Deflection coil: deflection coil is the TV scan circuit output stage load, deflection coil requirements: high deflection sensitivity, uniform magnetic field, Q value is high, small size, low price.The basic role: filtering, oscillation, delay, notch and so on
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