Sekundaarikäämä

Sekundaarikäämä refers to a secondary winding in an electrical transformer. Transformers are devices that transfer electrical energy between two or more circuits through electromagnetic induction. They consist of at least two coils of wire, known as windings, which are electrically insulated from each other but coupled by a common magnetic field. The primary winding is connected to the input voltage source, and the secondary winding is connected to the load.

The function of the secondary winding is to receive the induced voltage and deliver the transformed electrical power to the connected circuit. The voltage ratio between the primary and secondary windings determines whether the transformer steps up or steps down the voltage. A step-up transformer has more turns on the secondary winding than the primary, resulting in a higher output voltage. Conversely, a step-down transformer has fewer turns on the secondary, producing a lower output voltage. The current in the windings is inversely proportional to the voltage, assuming ideal conditions.

The physical construction and placement of the secondary winding are crucial for transformer efficiency and safety. It is typically made of insulated copper or aluminum wire and is wound around a common core, often made of laminated iron, along with the primary winding. The insulation prevents short circuits between the turns of the winding and between the winding and the core. The design considerations for the secondary winding include its resistance, inductance, and insulation properties, all of which affect the overall performance of the transformer.