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. 21, 1990
Filed:
Dec. 14, 1988
Applicant:
Inventor:
Peter G Berg, Attleboro Falls, MA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
322-8 ; 322 90 ; 219202 ;
Abstract
An automatic alternator is coupled to both a step up and a step down transformer. The outputs from the transformer are rectified and connected respectively to a windshield heater and to a circuit comprising the normal 14 volt car loads and the battery. A switch is coupled to the output of the step up transformer to control the energization of the windshield heater. Output leads from the alternator also bypass the transformer and are rectified with its DC output connected through switched to a positive temperature coefficient of resistivity heater and to the normal car load circuit.