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:
May. 14, 1991
Filed:
Apr. 24, 1989
Sydney K Tew, New Baltimore, MI (US);
Cadillac Gage Textron Inc., Warren, MI (US);
Abstract
A two wire transducer and associated circuit processes an output voltage of the transducer to produce a first signal proportional to the position of a non-contacting movable core and to produce a second signal proportional to the temperature of operation of the transducer. The associated circuit includes an excitation source or current driver which provides a fixed frequency sinusoidal constant current across the transducer coil; and first and second demodulator circuits respectively extract position and temperature signals from the voltage developed across the coil of the transducer device. Thus, both temperature and position information are provided by a single device over a single pair of leads.