Seven kinds of commonly used hollow coil coil
1, single coil
Single layer coil is a coil to an enclosure around the paper or bakelite skeletoninsulated wire. Such as the transistor radio wave antenna coil.
2, honeycomb coil
If the coil winding, the plane is not parallel with the plane of rotation, but mustintersect the viewpoint, the coil is called honeycomb coil. And the rotation of one week, the wire back and forth bending, often referred to as the breakpoint. Duolateral winding method merit is the volume small, small distributed capacitance, and large inductance. Duolateral coil are used to hive winding machine winding, break point more, the smaller the distributed capacitance
3, the ferrite core and iron core coil
The size of the coil inductance and has no core about. Stab into ferrite core in the air core coil, can increase the quality factor and the forward coilinductance.
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4, copper core coil
Copper core coil in ultrashort wave scale application more, using rotatingcopper core in the coil orientation to change the inductance, this adjustmentconvenient, by contrast.
5, color coded inductors
Color coded inductors inductors have inductance is fixed, the inductance withresistance to mark as color ring to mark.
6, choke (choke)
Alternating current through the coil constraints called choke, choke and the low frequency and high frequency choke coil.
7, deflection coil
The load deflection coil is TV scanning circuit output stage, deflection coildemand: high deflection sensitivity, a uniform magnetic field, high Q value,small size, low price.
