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:
Jan. 01, 1991
Filed:
Feb. 09, 1989
Robert W Fayfield, Shorewood, MN (US);
Banner Engineering Corporation, Minneapolis, MN (US);
Abstract
The present invention provides an output signal comprising a sourcing or sinking current for a sensor or control device. The type of output generated by the sensor or control device depends upon the polarity of the power supply. The DC circuit of the present invention is comprised of two input terminals for supplying voltage to the circuit. The DC circuit is also comprised of output means for delivering either a current sinking signal or a current sourcing signal. The present invention is further comprised of a control circuit having a connection to an externally supplied drive signal, the input terminals, and the output means. A current sourcing signal is produced in response to an occurrence of the drive signal when the first input terminal is positive with respect to the second input terminal. A current sinking signal is produced in response to an occurrence of the drive signal when the second input terminal is positive with respect to the first input terminal.