The skeleton of the I-inductor is supported by the winding of the copper coil. I-inductance is one of the attributes of an electronic circuit or device.

Toroildal inductors have the following functions: 1. Play a filtering role in AC circuit; 2. Can also play a vibration effect; 3. Dc circuit can play the role of frequency conversion; 4. It can also play the role of coupling and coupling.

1) The same type of components can be replaced from the scrap circuit board. 2) First determine the inductance and current value, replace it with an ordinary inductor with a pin, and fix it well.

From the appearance, such as a square or round inductor with a magnetic core, slightly larger volume, can see the core and coil.

The chip inductor is only used in the output end of the low-voltage DC control power supply. Its application is seen in the π shape filter circuit of CLC with the filter capacitor, which can stabilize the output current (inhibit current mutation). Inductance components, consisting of a single coil, some with a magnetic core (large inductance), generally expressed in units of μH and mH, current values ranging from a few milliamps to several hundred milliamps.