Sekundäärikela

Sekundäärikela, often translated as secondary coil, is a fundamental component in transformers and induction coils. It is the coil that is wound around a core alongside a primary coil. When an alternating current flows through the primary coil, it generates a changing magnetic field within the core. This changing magnetic field then induces a voltage across the secondary coil. The relationship between the number of turns in the primary coil and the secondary coil determines the voltage transformation ratio. If the secondary coil has more turns than the primary coil, the voltage is stepped up, and if it has fewer turns, the voltage is stepped down. This principle is essential for efficiently transmitting electrical power over long distances at high voltages and then stepping it down to safe levels for consumer use. In induction coils, the secondary coil is designed to produce very high voltages, typically for applications like spark ignition systems in internal combustion engines or X-ray machines. The construction of a secondary coil involves winding insulated wire around a magnetic core, often made of laminated iron or ferrite, to maximize magnetic flux linkage and minimize energy losses. The gauge and number of turns of the wire in the secondary coil are critical design parameters that dictate its inductance and voltage output capabilities.