sekundääripiirin

Sekundääripiirin, or secondary circuit, is the portion of an electrical device that receives power or signals from a primary circuit. It is common in transformers, where the primary winding is connected to the input power source and the secondary winding provides the output voltage that powers the load. The design of the sekundääripiirin determines the voltage level, current capacity, and frequency response of the device. In a transformer, the ratio of the number of turns in the primary and secondary windings dictates the voltage step up or step down.

In many electronic systems, the sekundääripiirin may refer to any circuit that is electrically isolated from the main or primary circuit and that performs a specific function such as amplification, regulation, or isolation. For example, the secondary stage of an audio amplifier may include power transistors that drive speakers, whereas in a power supply the secondary circuit forms the regulated output that supplies the rest of the device.

Secondary circuits must comply with safety and electromagnetic compatibility standards. They are inspected for insulation resistance, creepage distances, and proper grounding. In high‑voltage or high‑frequency applications, special design considerations such as surge protection, shielding, and filtering are required to maintain reliability. The term sekundääripiirin is often used in engineering, physics, and manufacturing contexts to describe these subordinate or derived circuits that depend on the primary circuit for power or data input.