tasajännitteisissä

Tasajännitteisissä refers to systems or components that operate with direct current (DC). In such systems, the flow of electric charge is unidirectional, meaning it moves consistently in one direction. This is in contrast to alternating current (AC) systems, where the direction of current flow periodically reverses.

Direct current is commonly generated by batteries, solar cells, and DC generators. Many electronic devices, such as mobile phones, laptops, and most small appliances, are designed to run on DC power. Larger DC systems are also used in applications like electric vehicles, subway systems, and certain industrial processes.

The voltage in a DC system remains constant over time, or it may change slowly and deliberately, as in a variable DC power supply. This constancy is a key characteristic that distinguishes it from AC, where the voltage oscillates sinusoidally. The principles of Ohm's law and Kirchhoff's laws are fundamental to analyzing and designing tasajännitteisissä circuits. Safety considerations for DC systems can differ from those for AC, particularly regarding insulation and grounding, as DC can sometimes induce more severe muscle contractions.