ACväljundi

ACväljundi is a term used in electronics to denote the interface that delivers alternating-current power from a source to a connected load. The phrase derives from regional technical usage, where väljund means output and AC stands for alternating current; it is commonly used in bilingual documentation to distinguish power output from signal lines or inputs.

Technical characteristics of an ACväljundi depend on regional electrical standards. The nominal voltage and frequency typically reflect local norms (for example, 110–127 V at 50/60 Hz in some regions, or 220–240 V at 50 Hz in others). The output waveform is usually sinusoidal, but some devices offer a modified sine or square-wave option for certain loads. The physical form of the output can vary from recessed outlets and detachable power connectors to fixed terminal blocks on industrial equipment. Some implementations include galvanic isolation between the control circuitry and the power output.

Protection and safety features are commonly incorporated. These may include overcurrent and short-circuit protection, overvoltage protection, earth grounding, and noise suppression measures. Output interfaces are designed to comply with applicable electrical codes and standards, and labeling typically specifies voltage, frequency, and polarity where relevant.

Applications of ACväljundi include power distribution in consumer devices, laboratory and test equipment, uninterruptible power supplies, and certain industrial systems. In portable or battery-powered equipment, the AC output is typically produced by an inverter or transformer-based stage that converts stored energy into usable mains-like power for connected loads. See also: electrical outlet, AC power, power supply.