How inductor provides constant current source?
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An inductor is an energy storage device.. when an AC current is passed
through an inductor a magnetic field is produced that can change the
condition of the AC current being passed through it...They are used as
'Chokes' in power supplies to filter noise, or switched mode power
supplies they are used to build up a magnetic field and then dump the
energy into a capacitor by the use of a power transistor switching at
high speed (similar to the coil (inductor) in car ignition systems).
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