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:
Dec. 14, 1993
Filed:
Oct. 20, 1992
Albert C Hrovat, Shoreview, MN (US);
Peter N Ladas, St. Paul, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A low voltage comparator circuit is utilized for comparing the current flowing into and out of one of the electrodes of a gas discharge device with a preselected value. The comparator provides an output signal to an optical isolation means for generating light waves in response to the comparator means output. The optical isolation means includes a photosensitive means for providing an output signal which is responsive to the intensity of light waves generated by the light generating means. The output of the photosensitive means is electrically connected to an input means for a current control which includes a first terminating means electrically connected to the one electrode of the gas discharge device, and a second terminating means electrically connected to the high voltage supply.