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Do you know what the physical scene of the power integrated inductor must be known? The following editor will take a look with you:
The induced electromotive force in the power-integrated inductive circuit is a physical quantity that offsets or compensates for its own growth or increase in the circuit. Starting from this principle, when the current in the effective conductor changes, the magnetic field caused by the current will change. , the change of the magnetic field will induce a new current to obstruct the change of the original current.
Induced current occurs whether there is absolute motion of the conductor and the magnetic field or a change in the magnetic field. The direction of the induced current is that the induced magnetic field is in the opposite direction to the change of the original magnetic field. The electromotive force induced by the current change is of opposite polarity to the potential at which the current change occurs.
Power inductance is a property of electronic circuits to prevent current changes, pay attention to the physical meaning of the word “change”, this is very important, a bit like inertia in mechanics, an inductor is used to store energy in a magnetic field, you will find This sight is very important.
In order to understand the concept of inductance, it is necessary to understand three physical phenomena. When a conductor is in a changing magnetic field, an induced electromotive force will occur outside the conductor. Like the first condition, induced currents also occur in the conductors.
When a conductor moves in an absolute magnetic field, an induced electromotive force will occur at both ends of the conductor, resulting in an induced current. When there is current activity in a power inductor conductor, a magnetic field occurs around the conductor.
Now everyone knows what the physical scene of the power integrated inductor is!