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Do inductors pass current?
So, as the inductive reactance is zero it will not oppose the flow of current. So the inductor passes the DC current, of course, it will offer very small resistance to the flow of current which depends upon the internal resistance of the inductor material.
How does inductor allow DC?
Let’s now assume that an AC current is flowing through the inductor. In other words, the inductor is a component that allows DC, but not AC, to flow through it. The inductor stores electrical energy in the form of magnetic energy. The inductor does not allow AC to flow through it, but does allow DC to flow through it.
Does inductor allow DC current?
How does an inductor act as a current source?
A current flowing through an inductor will tend to persist due to the inductance and the inductor will generate whatever voltage is required for that current as determined by the load, so it initially acts like a constant-current source.
How are inductors used in switched mode power supply?
Inductors are used as the energy storage device in many switched-mode power supplies to produce DC current. The inductor supplies energy to the circuit to keep current flowing during the “off” switching periods and enables topographies where the output voltage is higher than the input voltage.
Whereas resistors simply oppose the flow of current through them (by dropping a voltage directly proportional to the current), inductors oppose changes in current through them, by dropping a voltage directly proportional to the rate of change of current.
What causes the voltage across an inductor to change?
Any change in the current through an inductor creates a changing flux, inducing a voltage across the inductor. By Faraday’s law of induction, the voltage induced by any change in magnetic flux through the circuit is given by