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. 27, 2011
Filed:
Nov. 28, 2007
Robert J. Thomas, Brier, WA (US);
Michael L. Underhill, Bothell, WA (US);
Robert J. Thomas, Brier, WA (US);
Michael L. Underhill, Bothell, WA (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A system or circuit for simulating a potentiometer, thermistor, or the like. A pulse stream, having a duty cycle which is varied as a changing pulse width or as a differing number of time slices per time period, may be input to the system. The pulse stream to a transistor or switch-like mechanism may allow a controlled connection of a fixed value resistor to a reference voltage or ground to provide various resultant values of impedance or resistance. A measuring circuit connected to the output of the system may determine a value which is of the fixed value resistor divided by the duty cycle of the pulse train effectively controlling the connection of the resistor to ground. One or more additional circuits may be connected in parallel to achieve greater accuracy.