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Microchip Technology's pure sine wave uninterruptible power supply (UPS) reference design is based on the dsPIC33F "GS" series of digital-power digital signal controllers. This reference design demonstrates how digital-power techniques, when applied to UPS applications, enable easy modifications through software, the use of smaller magnetics, intelligent battery charging, higher efficiency, compact designs, lower audible and electrical noise via a purer sine-wave output, USB communication, and a lower overall bill-of-materials cost. Though not available for purchase, all of the documentation, software, and Gerber files needed to build this reference design can be obtained for free from the company's website.

Information: www.microchip.com/offlineups.
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