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:
Aug. 24, 1982
Filed:
Mar. 02, 1981
Richard D Blackburn, Pittsfield, MA (US);
Donald A Duclos, Pittsfield, MA (US);
General Electric Company, , US;
Abstract
Automatic voltage reduction is provided by a voltage regulator by monitoring utility load currents and comparing the load currents to a predetermined current value. When the predetermined current value is exceeded, the voltage input to the voltage regulator control is increased by a fixed predetermined amount causing the voltage regulator output to decrease. One embodiment of the automatic voltage reduction control circuit utilizes a current transformer for receiving a signal from a utility line in proportion to the amount of line load current. The current signal is compared to a predetermined current value by means of a differential amplifier to determine when the predetermined current is exceeded. The differential amplifier output then operates a relay to connect an auxiliary voltage source in series with the sensing transformer within the voltage regulator control unit.