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Khamis, Jun 27, 2013

Battery Backup Circuit For Microcontroller Projects




Battery Backup Circuit

My preferred PIC Microcontroller projects are clock tasks. All of my clocks are driven by 5V DC wall wart adaptors. In case of energy failure, the clocks quit and I have to set time once the electrical power is restored. This challenge won’t take place using the clocks making use of DS1307 RTC because it offers battery backup ability. Nonetheless, the clocks without having DS1307 or every other RTCs will endure from energy failure. The circuit below is an example from the utilization of battery backup circuit with PIC16F627A or PIC16F628. The circuit could be employed with other Microcontroller chips as a battery backup supply. Furthermore, it give energy failure signal (active reduced) for further processing.

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