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:
Mar. 21, 1995
Filed:
Feb. 03, 1992
Applicant:
Inventors:
Michael J DeLuca, Boca Raton, FL (US);
Mark L Oliboni, Boynton Beach, FL (US);
George A Drapac, Boca Raton, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323222 ; 363 59 ; 307 66 ; 320 38 ; 320 47 ; 320 50 ;
Abstract
In a device having a primary battery 10, a first voltage multiplier 20 is used to power digital electrical circuits 40 from the primary battery, and a second voltage multiplier 100-136 is used to recharge a backup battery 50 from the primary battery. The backup battery is charged to a voltage greater than the voltage generated by the first voltage multiplier. Methods of controlling the second voltage multiplier reduce its interference in measurement of device parameters, and reduce the power consumed from the primary battery.