In electronic circuits, the induction coil acts on a limited alternating current, which can form a Qualcomm or low-pass filter, a phase-shifting circuit and a resonant circuit with a resistor or a capacitor. Transformers can perform AC coupling, voltage conversion, current conversion and impedance conversion.
Inductor, also known as choke, reactor and dynamic reactor, is an element that can convert electric energy into magnetic energy and store it.
The structure is similar to a transformer, but there is only one winding. Generally, it consists of skeleton, winding, shield, packaging material, magnetic core or iron core.
The earliest inductor was discovered by M Faraday in England in 183 1 year? Electromagnetic induction of iron core coil. 1832, J. Henry of the United States published a paper on self-induction. People call the unit of inductance Henry for short.
When two inductors of a transformer are close to each other, the magnetic field change of one inductor will affect the other inductor, which is mutual inductance. The magnitude of mutual inductance depends on the self-inductance of the inductance coil and the coupling degree between the two inductance coils. Components made by using this principle are called. Transformers.