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:
Jul. 15, 1997
Filed:
Aug. 04, 1995
Applicant:
Inventor:
Yehoshua Mandelcorn, Dallas, TX (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363132 ; 363 98 ;
Abstract
A DC voltage polarity switching circuit includes four switches connected in a bridge configuration. Switches in opposing legs are paired with each other and turned on and off in alternate phases to deliver a low frequency alternating signal having a trapezoidal waveform to a co-axial cable load. Circuitry is included to control the slew rate when the output signal transitions from one polarity to the other. Also, turn on of a switch in one phase is delayed during turn off of a switch in the end of the interval of presently conducting switches in one phase.