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:
Apr. 10, 1990
Filed:
May. 12, 1988
Applicant:
Inventors:
George Gelecinskyj, Richfield, MN (US);
Charles E Goetzinger, Bloomington, MN (US);
John D Pro, Burnsville, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323285 ; 361 73 ;
Abstract
A current source for establishing a relatively constant current through widely differing impedances comprising a voltage potential regulator for adjustably regulating a supplied potential to provide a current to a current controller with a current sensor to supply a signal to the current controller, there being a signal supplied from the signal controller to control the voltage potential regulator. A further current rise time regulator is provided to increase the rise time occurrence provided to a commutated load.