| 摘要 |
A portable information device with an auxiliary power circuit makes use of a solar electric power generator and various kinds of manual electric generators to produce redundant power. The portable information device with an auxiliary power circuit has a load circuit, a backup battery connected to the load circuit to provide a redundant power source for the load circuit, a power-generating unit for supplying electric power, a power control unit connected to the power-generating unit to receive the supplied electric power and then control, process, and selectively output the supplied electric power, and a charging circuit connected to the power control unit and the backup battery and used to charge the backup battery based on the supplied electric power.
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