feszültségforrással

Feszültségforrás is a Hungarian term that translates to "voltage source" in English. It is a fundamental concept in electrical engineering, representing a theoretical or practical device that maintains a constant voltage across its terminals, regardless of the current drawn from it. In an ideal voltage source, the output voltage is entirely independent of the load.

Real-world voltage sources, such as batteries and power supplies, approximate ideal behavior within certain operating limits. They possess an internal resistance, which causes the terminal voltage to drop as the current drawn increases. However, for many practical applications, this internal resistance is small enough that the source can be considered a voltage source.

Voltage sources can be broadly categorized into two types: direct current (DC) and alternating current (AC) voltage sources. DC voltage sources, like batteries, provide a constant voltage in one direction. AC voltage sources, such as wall outlets connected to the power grid, provide a voltage that periodically reverses direction, typically in a sinusoidal waveform.

Understanding voltage sources is crucial for analyzing and designing electrical circuits. They are essential components for powering devices, driving current through circuits, and establishing potential differences that enable electrical energy transfer. The concept of a voltage source is a cornerstone of Ohm's law and Kirchhoff's voltage law, which are fundamental principles in circuit analysis.