Dc Regulated Power Supply

Written by Kevin Tavolaro
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Direct current electrical transmissions (DC) facilitate the operation of a DC regulated power supply. DC flows in the same direction, consistently. The limited nature of DC makes it more manageable than AC power, which is capable of flowing in any direction. In a DC regulated power supply, the current moves through a conductor from high to low potential.

The restricted scope of DC transmissions allows for a high level of control over the power. This stability makes DC a reliable current in many situations. However, it also impedes the ability of direct current to be transmitted across a great distance without losing a significant amount of energy through dissipation. Fortunately, the energy conduction of a DC regulated power supply can remedy this by changing the input DC current to AC. AC currents run at higher voltages than DC, and can therefore transverse more ground at a faster rate, without sacrificing too much efficiency.

DC Regulated Power Supply Low-Pass Filtering

Although no type of energy transmission is 100 percent efficient, DC regulated power supplies over a significant improvement. Newer products are now capable of providing efficiency rates in the 80 to 90 percent range. This is due to the low-pass filtering system used with DC. Low pass filtering is a means for regulating any excessive variance in the current by stabilizing the overall voltage. A filter physically interacts with the current as it passes through the conductor, and transforms all currents to the same standard. With this system, if there should be a sudden sharp rise in voltage, the filter can automatically shut the device down before any damage occurs to the circuits or components.

Many electronic circuits favor DC regulated power supplies, as they provide the greatest stability and security. Portable electronic devices, and automotive electronics are served well by DC power supplies, which are unrestricted by excessive dissipation concerns in these environments. While DC is favored in most low-voltage applications, the arrival of high voltage direct current (HVDC) has made it possible for the efficiency of DC to be applied over great distances, such as an electrical grid. The result is a current with the stability of DC, yet with power equal to AC.


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