myspace analytics
 

24VDC Power Supply

DC - Direct Current

 

DC is an acronym for direct current, which is a flow of electricity that is unidirectional in nature. Sources like solar cells, batteries, and thermocouples produce direct current.

One of the most widely known uses for DC current is in automobiles. Almost all devices in a car are run on the car’s battery, which generates a DC current.

The very first power transmission ever conducted for commercial purposes used direct current. DC current, however, has been mostly replaced by AC current for large scale power supply needs.

Alternating current has a lot of advantages over DC current, especially in the areas of transmission and transforming.


If DC current is needed on any kind of wide scale, such as on a third rail system, the AC power is routed to a substation and the power is passed through a massive rectifier. This converts the AC current to DC current. DC can also be turned into alternating current (AC) by using an inverter, which basically works in the opposite manner of a rectifier.

 

 

In other applications, DC current is used widely for recharging batteries, such as in a 24v DC power supply, and in the power supplies of many different electronic devices. It is also used for some railways, especially in areas that are very urban. DC current can also be used to send very large amounts of electricity over distances or to connect AC power grids.

While DC usually means direct current, it can also be used to refer to “constant polarity”. Direct current can flow through a wire, through a semiconductor, through an insulator, or even though a vacuum as it does when being conducted through an electron beam.

Direct current used to be described as Galvanic current, though this term was changed over time. Direct current is mainly different from alternating current in the way that it only flows in one direction.