suorajännitteen

Suorajännite, often translated as direct voltage, is an electrical potential difference that flows in only one direction. Unlike alternating voltage (AC) which periodically reverses its direction, direct voltage (DC) maintains a constant polarity. This means that the positive terminal is always positive and the negative terminal is always negative.

Common sources of direct voltage include batteries, solar cells, and DC power supplies. Batteries store chemical energy and convert it into electrical energy, providing a relatively stable DC output. Solar cells generate electricity directly from sunlight through the photovoltaic effect, also producing DC. DC power supplies convert AC from the mains into a lower, stable DC voltage.

Direct voltage is crucial for the operation of many electronic devices. For example, most portable electronics like smartphones, laptops, and remote controls rely on batteries to provide the DC voltage they need to function. Electronic circuits within these devices are designed to operate with a consistent polarity.

The concept of direct voltage is fundamental to understanding electrical circuits and their behavior. While AC is used for power transmission over long distances due to its efficiency, DC is essential for powering the vast array of electronic components that form the backbone of modern technology.