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:
Nov. 23, 1999
Filed:
Sep. 18, 1998
Charles Coleman, Fort Collins, CO (US);
Sierra Applied Sciences, Inc., Boulder, CO (US);
Abstract
A circuit for producing an alternating output current may comprise a first current regulator and a second current regulator. The first current regulator produces a first phase of the alternating output current and regulates the current of the first phase. The second current regulator produces a second phase of the alternating output current and regulates the current of the second phase. A first polarity reversing circuit operatively associated with the first current regulator periodically reverses the polarity of the first phase. A second polarity reversing circuit operatively associated with the second current regulator periodically reverses the polarity of the second phase. A control system operatively associated with the first and second current regulators and the first and second polarity reversing circuits controls the operation of the first and second current regulators and the first and second polarity reversing circuits.