Description of inductor coil

1. Single-layer coil

A single layer coil is a coil of insulated wire wound one by one around a paper cylinder or bakelite frame. Such as transistor radio medium wave antenna coil.

2. Honeycomb coil

If the plane of the winding coil is not parallel to the rotating surface, but intersects at a certain Angle, the coil is called a honeycomb coil. And the number of times the wire bends back and forth as it rotates once is often called the number of fold points. The advantages of the honeycomb winding method are small size, small distributed capacitance and large inductance. The honeycomb coil is wound by using the honeycomb winding machine. The more folding points, the smaller the distributed capacitance.

3. Ferrite core and iron powder core wire coil

The inductance of the coil depends on the presence or absence of a magnetic core. Inserting ferrite core into the hollow coil can increase inductance and improve coil quality.

4. Copper core coil

Copper core coil is widely used in the ultra-short wave range. The position of rotating copper core in the coil is used to change the inductance, which is convenient and durable.

5. Color code inductor

The color code inductor is an inductor with fixed inductance. The method of marking the inductance is the same as that of resistance.

6. Choke coil (choke coil)

The coil limiting the ac current passing through is called a choke coil, which is divided into high frequency choke coil and low frequency choke coil.

7. Deflection coil

Deflection coil is the output stage of TV scanning circuit load, deflection coil requirements: high deflection sensitivity, uniform magnetic field, high Q value, small size, low price.