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:
May. 11, 1999
Filed:
Feb. 17, 1998
Hilmer Irvin Swanson, Quincy, IL (US);
Gerald Wayne Collins, Quincy, IL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
A pulse step modulator comprising is disclosed including a plurality of series connected unit step modules, each including a DC voltage source and an associated actuatable switch for, when on, turning on the associated module to provide a unit step voltage. An output circuit is connected to the series connected modules for providing an output voltage to a load wherein the magnitude of the output voltage is equal to the sum of all the voltage sources of the modules that are turned on. A plurality of module turn on signals are provided, each for turning on a switch in one of the modules for the time duration of the turn on signal after which the switch is turned off. Each unit step module includes a transformer means exhibiting an associated unwanted capacitance between transformer means and circuit ground and which capacitance becomes charged when the associated switch is turned on. Each unit step module has capacitance discharge means for rapidly discharging the associated capacitance each time the associated switch is turned off.