SMT patch and DIP plug-in electronic components capacitor and inductance professional practical knowledge!
From: Author:Mark Hardy Publish time:2021-09-08 12:05 Clicks:3
Electronic manufacturing SMT patch and DIP plug-in post-welding electronics factory PCBA production of resistance, capacitors, integrated circuits, relays, connectors, diodes, transistors, inductors, coils, electronic wiring harness and other SMT related electronic components products are indispensable, familiar with The principles and functional characteristics of electronic components will bring a lot of help to our friends in the electronics manufacturing industry!
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Introduction to inductors:
Inductor is an element that can convert electrical energy into magnetic energy and store it. The structure of the inductor is similar to that of a transformer, but it has only one winding. The inductor has a certain inductance, it only hinders the change of current. If the inductor is in a state where no current is flowing, it will try to block the current from flowing through it when the circuit is on; if the inductor is in a state where current is flowing, it will try to maintain the current when the circuit is off. Inductors are also called chokes, reactors, and dynamic reactors. Inductors are generally composed of skeletons, windings, shields, packaging materials, magnetic cores or iron cores.
The most primitive inductor is the iron core coil used by British M. Faraday to discover the phenomenon of electromagnetic induction in 1831. In 1832, J. Henry of the United States published a paper on the phenomenon of self-induction. People call the unit of inductance as Henry, or Henry for short. In the mid-19th century, inductors were used in telegraphs, telephones and other devices. The inductors used by H.R. Hertz in Germany in 1887 and N. Tesla in the United States in 1890 are very famous, and they are called Hertz coils and Tesla coils.
1. The definition of inductance
1.1 Definition of inductance:
Inductance is the ratio of the magnetic flux of the wire to the current that produces this magnetic flux when alternating current is passed through the wire, which produces alternating magnetic flux inside and around the wire. L=ψ/I
1.2 Symbols and units of inductance
Inductance symbol: L
Inductance units: Hen (H), millihenry (mH), microhenry (uH), nanohenry (nH), 1H=103mH=106uH=109nH. A
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