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Understanding the principle of a transformer involves grasping how it transfers electrical energy between two or more circuits through electromagnetic induction. A transformer typically consists of two coils of wire, known as the primary and secondary windings, wrapped around a core made of magnetic material. When an alternating current (AC) flows through the primary winding, it creates a magnetic field that induces a voltage in the secondary winding. The ratio of the number of turns in the primary and secondary windings determines whether the transformer steps up (increases) or steps down (decreases) the voltage. This principle is fundamental in electrical engineering and is widely used in power distribution and various electronic devices.
Release time:
2024-12-26
A transformer is a device that changes alternating current voltage, current, and impedance. When alternating current flows through the primary coil, an alternating magnetic flux is generated in the iron core (or magnetic core), inducing voltage (or current) in the secondary coil.
A transformer is a device that changes alternating current voltage, current, and impedance. When alternating current flows through the primary coil, alternating magnetic flux is generated in the iron core (or magnetic core), inducing voltage (or current) in the secondary coil. A transformer consists of an iron core (or magnetic core) and coils, with two or more windings. The winding connected to the power source is called the primary coil, while the remaining windings are called secondary coils. In a generator, whether the coil moves through a magnetic field or the magnetic field moves through a fixed coil, an electromotive force can be induced in the coil. In both cases, the value of magnetic flux remains unchanged, but the amount of magnetic flux intersecting the coil varies, which is the principle of mutual induction. A transformer is a device that utilizes the electromagnetic mutual induction effect to change voltage, current, and impedance.
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