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:
Dec. 20, 2005
Filed:
Dec. 28, 2000
Ronald E. Gareis, Charlottesville, VA (US);
Donald A. Gates, Kents Store, VA (US);
Edwin M. Thurnau, McGaheysville, VA (US);
Ronald E. Gareis, Charlottesville, VA (US);
Donald A. Gates, Kents Store, VA (US);
Edwin M. Thurnau, McGaheysville, VA (US);
GE Fanuc Automation North America, Inc., Charlottesville, VA (US);
Abstract
A method for reducing thermal dissipation in a single PLC package includes implementing a pulse width modulated current regulator including a field effect transistor (FET) switch, and utilizing a turn on delay of the FET to provide a wide operating range of current. The FET has an inherent turn-on time delay that can be exploited such that, as the duty cycle is reduced, the FET's drain to source impedance dominates an inductive path of an output filter and increases output filtering.