Inductive coil means that the coil is wound on the insulating tube by wires, and the wires are insulated from each other. The insulating tube can be hollow, and can also contain iron core or magnetic powder core. Inductor coil is a device that works by using the principle of electromagnetic induction. When a current flows through a wire, a certain electromagnetic field will be generated around the wire, and the wire of the electromagnetic field itself will induce the wire in the range of the electromagnetic field. So what is the working principle of Inductor Winding Machine?
The inductor Coil Winding Machine is the ratio of the magnetic flux of the conductor to the current that produces the alternating magnetic flux in and around the conductor when the alternating current passes through the conductor. When DC current passes through the inductor, there is only a fixed magnetic line around it, which does not change with time; However, when AC current passes through the coil, there will be time-varying magnetic lines around it.
When a closed circuit is formed, the induced potential will produce an induced current. According to Lenz's law, the total amount of magnetic lines of force produced by induced current should try to prevent the change of original magnetic lines of force. Because the change of the magnetic line of force comes from the change of the external alternating power supply, the inductance coil has the characteristic of preventing the current change in the AC circuit from the objective effect. Inductance coil has similar characteristics to inertia in mechanics, which is called "self induction" in electricity. Usually, when the knife switch is opened or turned on, sparks will occur, which is caused by the high induction potential generated by the self induction phenomenon.
In short, when the inductor Winding Machine is connected to the AC power supply, the magnetic lines of force in the coil will change with the alternating current, resulting in the continuous electromagnetic induction of the coil. The electromotive force produced by the change of the current of the coil itself is called "self induced electromotive force". It can be seen that the inductance is only a parameter related to the number of coils, size, shape and medium of the coil. It is a measure of the inertia of the coil and has nothing to do with the applied current
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