A voltage controller is intended to naturally keep up a consistent voltage level. A voltage controller might be a straightforward "food forward" configuration or might incorporate negative input control circles. It might utilize an electromechanical system, or electronic parts. Contingent upon the outline, it might be utilized to direct one or more AC or DC voltages.

Electronic voltage controllers are found in gadgets, for example, PC power supplies where they balance out the DC voltages utilized by the processor and different components. In car alternators and focal force station generator plants, voltage controllers control the yield of the plant. In an electric force appropriation framework, voltage controllers might be introduced at a substation or along conveyance lines so that all clients get relentless voltage autonomous of how much power is drawn from the line.

This 78xx arrangement of settled voltage solid coordinated circuit voltage controllers is intended for an extensive variety of utilizations. These applications incorporate on-card regulation for end of Noise and conveyance issues connected with single point regulation. The 7805 is most basic and surely understood of the 78xx arrangement controllers, as its little segment check and medium-power directed 5V make it helpful for driving TTL.