Troubleshooting Electronic Equipment by R. Khandpur

Author:R. Khandpur
Language: eng
Format: mobi, epub, pdf
Published: 0101-01-01T00:00:00+00:00

Fig. 7.15 Variable capacitor

Fig. 7.16 Tubular type variable capacitors

7.5 INDUCTORS

Inductance is the characteristic of a device which resists change in the current through the device. Inductors work on the principle that when a current flows in a coil of wire, a magnetic field is produced which collapses when the current is stopped. The collapsing magnetic field produces an electromotive force which tries to maintain the current. When the coil current is switched, the induced emf would be produced in such a direction, so as to oppose the build-up of the current.

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