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. 21, 1992
Filed:
Jul. 02, 1990
Johannes A Misdom, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An electric voltage generator comprises a transformer (1) having a ferromagnetic core (3), a primary winding (5) and a secondary winding (7). The primary winding (5) includes a first primary coil (31) wound in the form of a solenoid and the secondary winding (7) includes a first secondary coil (33) wound in the form of a solenoid. These coils (31, 33) have the same length, have the same number of turns of wire of the same diameter, and are concentrically disposed on the core (3) in the same axial position. Their winding sense and connection to a primary circuit (9) and a secondary circuit (19), respectively, are chosen so that correspondingly situated ends of these two coils carry alternating voltages of the same polarity in the operating condition. Consequently, correspondingly situated turns of the two coils carry the same alternating voltage and interference signals cannot be transferred via the parasitic capacitance (37) between the primary winding (5) and the secondary winding (7).