Toisiokäämiin

Toisiokäämiin, often translated as secondary coil, refers to the coil of wire in an electrical transformer that is connected to the load. Transformers are passive electrical devices that transfer electrical energy from one circuit to another through electromagnetic induction. The basic structure of a transformer consists of two coils of wire, the primary coil and the secondary coil, wound around a common ferromagnetic core.

When an alternating voltage is applied to the primary coil, it creates a changing magnetic flux in the core. This changing magnetic flux then induces an alternating voltage in the secondary coil. The ratio of the number of turns in the primary coil to the number of turns in the secondary coil determines the voltage transformation. If the secondary coil has more turns than the primary coil, it is a step-up transformer, increasing the voltage. Conversely, if the secondary coil has fewer turns, it is a step-down transformer, decreasing the voltage.

The secondary coil is where the output voltage and current are delivered to the external circuit or device. The impedance of the load connected to the secondary coil influences the current drawn from the primary coil. Transformers are essential components in power distribution systems, electronics, and many other applications where voltage modification or electrical isolation is required. The term "toisiokäämiin" specifically denotes this output coil within the transformer assembly.