ABSTRACT
As the technology of calculator developing fast, the calculator has already been applied to electric power broadly, corresponds by letter, bank, chemical engineering, military etc. Every trade, and turn a direction to continuously push forward toward the network.But the power supply problem is exactly a calculator information the No.1 of the system cutthroat, lightly the important data then throws to lose, heavy the whole system then paralyzes and bring the loss and disaster that can't estimate.How to work out this important problem, is exactly the responsibility place of the UPS without a break power supply.
The UPS basic function is without a break to output power supply.So can availably prevent from causing a throw of important data to lose because of suddenly cut the power of the calculator, avoid unnecessary loss.
This text introduced UPS concept, creation, definition and classification.Introduced currently various familiar UPS, analyzed UPS work principle. Carry on a mold piece to turn analysis to the UPS, among them, the point introduced to carry out the design and realization which flaps to concuss an electric circuit mold piece and goes against to change an electric circuit mold piece and SG3524 mold piece of the related sine wave with topic.
Keywords: Uninterrupted Power Supply, sine wave, SG3524