Dc Regulated Power Supply 

Computers require certain power supply in order to operate. With a continuous turn of a knob, the voltage output of a variable power supply can be adjusted to meet specific demands. They typically come in voltages between 5 and 30 volts and amperage levels between 0.5 and 10 amps. Every single electronic item that runs off of a battery uses direct current. Battery-operated electronics like laptops and mobile phones typically have an AC converter built in to help charge their batteries from alternating current. Direct current is not ideal for high-voltage electricity transmission because adjusting its voltage is more complex and costly than adjusting the voltage of alternating current.

Constant voltage, voltage limit, and current limit are the three most common outputs or functions for DC regulated power supply. Different configurations of these outputs can be built into power supply to meet the needs of specific tasks. The output voltage is stable regardless of load, line, or environmental conditions. Therefore, the output voltage remains stable. In a perfect world, constant voltage power supply' output impedance would be 0 over the whole frequency spectrum. There is a load device, a rectifier, and a control element connected in series to make up the circuit. Regulation of this sort is typical of linear power supply.

The supply is almost probably regulated if the output is stable to within 1% over the load range. For a controlled supply, percentages above 5% are likely to be questionable. The output voltage of regulated supplies is actively maintained at a constant level across a broad range of load currents. Supply ripple will be minimal if proper regulation is in place. Anything above 100 mV should be questioned. This is true whether or not there is a full supply. If the voltage is not regulated, it may have a few volts of ripple, or more in the loaded scenario. Whether or not the supply is regulated is secondary to the behavior of its output voltage under different loads.