Μετασχηματιστής Αρχή

A μετασχηματιστής είναι a συσκευή αυτό μετασχηματισμοί AC τάση, ρεύμα, και σύνθετη αντίσταση. Πότε an AC ρεύμα περνά μέσω το πρωτεύον πηνίο, an AC μαγνητικό ροή είναι παραγόμενο in the iron core (or magnetic core), which induces a voltage (or current) in the secondary coil. The transformer αποτελείται of an iron core (or magnetic core) and a coil. The coil has two or more windings. The winding connected to the power supply is called the primary coil, and the remaining windings are called the secondary coil. In a generator, if the coil moves through the magnetic field or the magnetic field through the fixed coil, an electric potential can be in in the coil. In both cases, the value of the magnetic flux remains the same, but the amount of magnetic flux intersecting the πηνίο είναι διαφορετικό. αλλαγή, this is the principle of mutual induction. A transformer is a device that uses electromagnetic mutual inductance to transform voltage, current and impedance.