The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 19, 2000

Filed:

Feb. 04, 1999
Applicant:
Inventors:

Yung-Hsin Huang, Taipei Hsien, TW;

Chien-Hua Liao, Taipei Hsien, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ; H02J / ;
U.S. Cl.
CPC ...
307 64 ;
Abstract

A power supplying system includes a switching control circuit connected to a stand-by power source so as to receive electrical power therefrom. The switching control circuit is further connected to a power-supplying unit and is activated to control operation of the power-supplying unit in a selected one of an ON state, where the power-supplying unit supplies electrical power for operating a heat-dissipating fan, and an OFF state, where the power-supplying unit ceases to supply the electrical power to the heat-dissipating fan. A delayed closing device receives a power-OFF signal from the power-supplying unit at an instant the power-supplying unit is operated from the ON state to the OFF state, and connects the heat-dissipating fan to the stand-by power source upon receiving the power-OFF signal to enable the heat-dissipating fan to receive electrical power from the stand-by power source and permit continued operation of the heat-dissipating fan even after the heat-dissipating fan ceases to receive the electrical power from the power-supplying unit.


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