Method for selecting an inductive or battery power supply...

Details Method for selecting an inductive or battery power supply... Method for selecting an inductive or battery power supply...

2004-02-25

2008-05-27

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Having power source monitoring

C713S300000, C713S320000, C307S043000

Reexamination Certificate

active

07380150

ABSTRACT:
A power management circuit for a system that has combined power supplies from an inductively coupled circuit and from a battery comprises voltage sensing circuitry for sensing the voltage of each of the power supplies. A switching arrangement selectively connects one of the power supplies with a user or with plural users. The switching arrangement is controlled by appropriate control circuitry in response to outputs from the voltage sensing circuitry. The power management makes the best use of energy received over the inductive interface to preserve battery lifetime.

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patent: 0 875 851 (1998-11-01), None
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