Sekundaarikäämiä

Sekundaarikäämiä is a Finnish term that translates to "secondary coil" in English. It refers to a component within an electrical transformer, which is a device used to transfer electrical energy between circuits through electromagnetic induction. A transformer typically consists of two or more coils of wire, known as windings, wound around a common ferromagnetic core. The primary coil is connected to the input electrical source, while the secondary coil is connected to the output load.

When an alternating current flows through the primary coil, it creates a fluctuating magnetic field in the core. This changing magnetic field then induces an alternating voltage in the secondary coil. The ratio of the number of turns in the secondary coil to the number of turns in the primary coil determines the voltage transformation. If the secondary coil has more turns than the primary, it is a step-up transformer, increasing the voltage. Conversely, if it has fewer turns, it is a step-down transformer, decreasing the voltage. The purpose of the secondary coil is to receive the induced electrical energy and deliver it to the connected circuit. Sekundaarikäämiä are essential for power distribution, allowing electricity to be transmitted efficiently at high voltages and then reduced to safe levels for consumption. They are also found in many electronic devices for voltage regulation and signal isolation.