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:
Nov. 28, 1989
Filed:
Mar. 10, 1989
Stephen T Pasquarella, Rochester, NY (US);
VA Inc., Rochester, NY (US);
Abstract
An actuator circuit for an inductive load includes a first low impedence source of direct current at a relatively high voltage, a second low impedance source at a lower voltage, a switching arrangement responsive to an input signal for connecting a load across the first source at the beginning of the signal and for a predetermined initiating interval thereafter, and at the end of the interval switching the load from the first to the second source, and a feedback control for limiting the current through the load to a first, constant value during the initiating interval and to second, lower constant value thereafter. The circuit cuts off the load when the input signal ceases or it removed.