tasavirtojen

Tasavirta, also known as direct current (DC), is an electric current that flows in only one direction. Unlike alternating current (AC), which periodically reverses direction, the charge carriers in a DC circuit move consistently from the negative terminal to the positive terminal. This unidirectional flow is fundamental to many electrical and electronic devices.

The primary source of DC power is typically batteries, which convert chemical energy into electrical energy through electrochemical reactions. Direct current is also produced by solar cells and some types of power supplies. Many electronic components, such as transistors and integrated circuits, require DC power to operate correctly. Moreover, DC is used in applications like electric vehicles, charging portable electronics, and in certain industrial processes like electroplating.

While AC is commonly used for power transmission over long distances due to its ease of voltage transformation, DC is preferred for specific applications where precise voltage control or compatibility with sensitive electronics is crucial. Understanding the distinction between DC and AC is essential for comprehending the principles of electricity and its diverse applications.