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:
Jun. 11, 1996
Filed:
Jun. 15, 1995
Applicant:
Inventor:
Grady M Wood, Melbourne, FL (US);
Assignee:
Harris Corporation, Melbourne, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
3151693 ; 3152 / ; 315224 ; 315226 ; 315291 ; 315308 ; 315D / ;
Abstract
In a switching inverter where transistor switches are controlled so as to provide current through an inductor which is connected in series with the switches across a battery so as to power a capacitive load (such as an electroluminescent lamp) with higher voltage than the battery voltage, control current for the switches and particularly the emitter to base current therethrough is shared by connecting the bases of these transistors via a current limiting resistor. Using the same base current reduces the battery drain and improves the efficiency (power applied to the load versus battery power drawn) of the inverter.