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.
Patent No.:
Date of Patent:
Aug. 03, 1982
Filed:
Feb. 05, 1981
Applicant:
Inventors:
Donald V DiMassimo, Liverpool, NY (US);
John B May, Liverpool, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
307 66 ; 307130 ;
Abstract
A power supply having reliable means to detect the failure of an AC power source and to provide an AC fail signal in response thereto includes error-free switchover circuitry to supply emergency power from a standby battery. The power supply comprises a comparator circuit, a Schmitt trigger-inverter circuit, and a feedback circuit which provides positive regeneration to ensure error-free battery switching under AC power fail or restore conditions.