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:
Sep. 10, 1991
Filed:
Aug. 15, 1989
Lawrence B Horwitz, Danville, CA (US);
Intergraph Corporation, Huntsville, AL (US);
Abstract
A method of simulating the operation of a circuit utilizing voltage or current data obtained from measurements of actual samples of each of the circuit components. The actually measured voltage or current data is employed to mathematically analyze operation of the circuit. In this process, each circuit component is characterized as one or more of a voltage controlled voltage source, voltage controlled current source, current controlled voltage source and current controlled current source. After such characterization, a trial operating point is selected and values of current or voltage between actually measured data points are determined and linearized circuit equations are established with spline equations. The linearized equations are solved. The steps are repeated with a new trial operating point in accordance with a Newton-Rhapson iterative technique until the solution of the linearized equations is within a predetermined range.