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:
Feb. 21, 1995
Filed:
Jun. 08, 1993
Alan S Feldman, Phoenix, AZ (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A driver apparatus for driving one or more electrical loads includes an oscillator for providing an input signal. An amplifier amplifies the input signal. A power transformer has a primary winding for receiving the amplified input signal and at least one secondary winding for providing a drive signal to drive one or more electrical loads. The driver apparatus may include a center tap for the secondary windings or a precision resistive network for providing a pair of diametrically symmetrical drive signals at each secondary winding. A drive signal from one of the secondary windings is compared to a reference signal in an automatic gain control loop for application to the oscillator. An average drive signal could also be derived from one output from each secondary winding to be compared to the reference signal for forming the gain automatic control loop.