egyenfeszültséggé

Egyenfeszültség, often translated as direct current voltage, refers to an electrical potential that flows consistently in one direction. Unlike alternating current (AC), where the direction of electron flow periodically reverses, direct current (DC) maintains a constant polarity. This means that the positive terminal always remains positive, and the negative terminal always remains negative.

The characteristic feature of DC is its unvarying magnitude over time, assuming an ideal source. In practical applications, there might be minor fluctuations, but the fundamental directionality is key. Common sources of DC include batteries, solar cells, and DC power supplies which convert AC to DC.

DC voltage is measured in volts (V). Its applications are widespread, forming the basis of power for most electronic devices such as computers, smartphones, and televisions. Batteries power portable electronics through DC, and the internal circuitry of many devices operates on DC supplied by internal or external power adapters.

The transmission of DC over long distances was historically less efficient than AC due to voltage drop issues. However, advancements in high-voltage direct current (HVDC) transmission have made it more viable for bulk power transfer, particularly for undersea cables and connecting asynchronous power grids. Understanding the properties of egyenfeszültség is fundamental to comprehending the operation of a vast array of electrical and electronic systems.