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Jul 30, 2018

Coil usually refers to a wire winding in a ring. Its inductance is related to whether there is a magnetic core or not. The higher the Q value is, the smaller the loss of the circuit is.

The coil in a circuit is an inductor. It means that the wires are wound one by one, and the wires are insulated from each other. The insulated pipes can be hollow or contain iron core or magnetic powder core, or inductance for short. Inductance can be divided into fixed inductor and variable inductor. Is expressed with L, Henry (H), Henry (mH), Henry (uH), 1 H = 10 ^ 3 mH = 10 ^ 6 uH.