jõutransformaadid

Jõutransformaadid, also known as power transformers, are static electrical devices used to transfer electrical energy between circuits through electromagnetic induction. They operate on the principle of Faraday's law of induction, where a changing magnetic flux in a core induces a voltage in a coil. A basic transformer consists of two or more windings of wire, called coils, wrapped around a ferromagnetic core. The coil connected to the input power source is called the primary winding, and the coil connected to the load is called the secondary winding. The ratio of the number of turns in the primary winding to the number of turns in the secondary winding determines the voltage transformation. If the secondary winding has more turns than the primary, it is a step-up transformer, increasing the voltage. Conversely, if the secondary has fewer turns, it is a step-down transformer, decreasing the voltage. Power transformers are crucial components in electrical power systems, enabling efficient transmission of electricity over long distances at high voltages and then stepping it down to safe and usable levels for consumers. They are essential for almost all applications involving alternating current (AC) electricity.