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:
Mar. 17, 1998
Filed:
Apr. 03, 1996
Rex McCleary, Anacortes, WA (US);
Daniel Dean Thacker, Sultan, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
AC to DC signal conversion for use in applications including conditioning of signals supplied by inductive position sensors that are employed in aircraft electrical and electronic systems. First and second switching circuits (14 and 16) are synchronously switched between operational states in which an applied AC signal is supplied to the switching circuits and a second operational state in which the switching circuits supply charge (current). When one switching circuit (e.g., 14) is in the first operational state, the second switching circuit (e.g., 16) is in the second operational state so that one switching circuit senses the AC signal during positive half cycles and the other switching circuit senses the AC signal during negative half cycles. A pair of capacitors (18 and 20) are connected between a pair of output terminals. The first switching circuit (14) charges one capacitor (18) when the first switching circuit is in its second operational state and the second switching circuit (16) charges the other capacitor (20) when the second switching circuit is in its second operational state. A buffer amplifier (22) can be used for receiving the signal developed across the capacitors (18 and 20) to thereby provide isolation relative to a circuit or system that is connected for receiving the DC signal supplied by the AC to DC signal conversion.