Precautions for inductance coil
Information from:internet Published on:2022-03-02
In the actual application of the coil, there are appropriate number and varieties of inductance coil right and wrong standard parts, which are wound according to the needs. When self winding, pay attention to the following points: (1) According to the needs of the circuit, the winding method is selected: when winding the air core inductance coil, the winding method shall be determined according to the needs of the circuit, the inductance and the diameter of the coil skeleton. The inter wound coil is suitable for use in high frequency and ultra-high frequency circuits. When the number of turns is less than 3 to 5, it can have good characteristics without skeleton. The Q value is high, up to 150-400, and the stability is also high. Single layer close wound coil is suitable for short wave and medium wave circuits. Its Q value can reach 150-250 and has high stability. (2) Ensure the current carrying capacity and mechanical strength of the coil, and select appropriate wires: the coil should not be wound with too thin wires to avoid increasing the coil resistance and reducing the Q value. At the same time, the conductor is too thin, its current carrying capacity and mechanical strength are small, and it is easy to burn or break the wire. Therefore, on the premise of ensuring the current carrying capacity and mechanical strength of the coil, appropriate wire winding should be selected. (3) Winding coil taps shall have obvious symbols, and coils with taps shall have obvious symbols, which is very convenient for installation and maintenance. (4) Coils with different frequency characteristics adopt magnetic cores of different materials.
