| US 7,516,343 B2 | ||
| Enhancements to improve the functionality and efficiency of brick power adapters | ||
| Kulvir S. Bhogal, Fort Worth, Tex. (US); Gregory J. Boss, American Fork, Utah (US); Rick A. Hamilton, II, Charlottesville, Va. (US); and Alexandre Polozoff, Bloomington, Ill. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Jun. 21, 2006, as Appl. No. 11/425,606. | ||
| Prior Publication US 2007/0300089 A1, Dec. 27, 2007 | ||
| Int. Cl. G06F 1/32 (2006.01) | ||
| U.S. Cl. 713—320 [713/300] | 8 Claims |
| 1. A method for reducing the power consumption of an AC to DC adaptor, the method comprising:
converting AC power to DC power with a transformer on the adaptor;
charging a local battery on the adaptor;
supplying DC power to a detecting and switching mechanism on the adaptor;
detecting the presence of a target electronic device attached to the adaptor;
determining the power requirements of the target device;
supplying DC power from the transformer to the target device when required;
disabling the transformer when DC power is not needed by the target device; and
using the local battery to supply DC power to the switching and detecting mechanism while the transformer is disabled.
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