KABTRONICS World Clock 2 Operating And Assembly Manual
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K A B T R O N I C S P A R T S I D E N T I F I C A T I O NWorld Clock Kit Page 37373737Theory of OperationThis clock is based on the microprocessor PIC18LF2510, driving SAA1064 LED segmentdrivers.This clock is built from function blocks;• Processoro Holds the program that controls the clock. Watches the 5 volt power and whenthe 5 volts is missing it switches to a low power mode attempt to keep runninguntil the power returns.• Power backupo Has a 1 Farad capacitor that powers the processor only when the 5 volt supply islost. Uses diode switching to select which supply to use. |
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