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. 15, 2000
Filed:
Dec. 21, 1998
James D Cross, Waterloo, CA;
Ruanduff Electrical Limited, County Dublin, IE;
Abstract
A power supply for producing a high voltage DC output. The power supply comprises a primary winding and a series of secondary stages each having secondary windings coupled to the primary winding through a magnetic circuit. Each secondary stage comprises a printed circuit board with the secondary windings formed as a series of independent coils or turns on the board substrate. The magnetic circuit comprises a series of segments which are separated by an insulating film to maintain each segment at the same potential as the associated printed circuit board. Each coil includes a rectifier element for converting the induced AC voltage into a DC voltage. The rectifier elements are connected in series and the printed circuit boards are coupled to produce a high level DC voltage output signal, for example, a minimum 200 kV output. To compensate for Magneto Motive Force (MMF) losses through the insulating film, the rectifier elements include a compensation capacitor.