Power transmission systems illustrate one of the major uses of transformers. You can design a transformer using a combination of inductors with a shared magnetic field. You can fix the speed of the motor according to the frequency of the power supply from the source.
The shaft in the motor will rotate due to the magnetic field produced by the alternating current. In induction motors, inductors control the speed of the motor. The use of an inductor coil in the switch that comes in contact with the flow of AC produces a magnetic field. The proximity sensors mechanism is used in traffic lights to detect traffic density.Ī relay behaves as an electrical switch. The main principle behind it is inductance, which is the magnetic field in the coil opposing the flow of electric current. Inductive proximity sensors are very reliable in operation and are contactless. You can see this in computer circuits where power supplies can be switched. The energy is stored as a magnetic field and will disappear when the power supply is removed. It modifies the frequency and helps to select within multiple channels of frequency. Electronic devices such as radio tuning circuits and television use capacitors along with the inductor. Through the use of inductors, the tuning circuits can select the desired frequency. This is used in a power source where the AC supply converts into DC. Then, the inductor chokes the AC flow and passes the DC. When AC flows through inductors, it creates a current flow in the opposite direction. Uses of inductors depend in electrical transmission requirements. As the electricity flows into the coil from left to right, it generates a magnetic field in a clockwise direction. Therefore, inductors oppose any changes in current through them.Īn inductor is capable of storing energy in the form of magnetic fields. However, Lenz’s law states that the induced voltage has a polarity that opposes the change in current that created it. Using epoxy glue or other suitable adhesive.The time-varying magnetic field induces an electromotive force in the conductor described by Faraday’s law of induction. Of vibration then wind the coil on a support made fromĪ suitable non magnetic plastic or ceramic former and lock the windings If you need good induction stability in the presence Usually obtained when the length of the coil is the Other combinations of wireĪnd coil diameter may be tried but best results are Small reductions in the inductance obtained can beĪchieved by pulling the turns apart slightly. )using enameled copper wire (magnet wire) tightly wound. This formula applies at 'low' frequencies (<3MHz) L is the coil length in meters (>0.8radius)įrom center of wire trough center of the coil and to The calculation is based on the classic Wheeler's formula for single-layer inductance (air core, tightly wound), which dates back to the radio days of the 1920s:
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