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. 07, 1987
Filed:
Sep. 23, 1985
Applicant:
Inventors:
Hans-Jurgen Fahnrich, Munich, DE;
Erhard Rasch, Ottobrunn, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 57 ; 174 685 ; 315 58 ; 315 62 ; 336200 ; 336223 ;
Abstract
To facilitate assembly of tiny cores used in accessory circuitry for a flescent lamp, bases of two transistors (20, 20') are connected to inductive windings on a core (2) which is retained by a primary winding (3) on the printed circuit (PC) board (1). The windings connected to the bases are formed by U-shaped wires surrounding the core which--preferably--is a toroidal core. The windings may include a resistor (8, 8') located within the toroidal core to heat quickly and, also, heat the core, the resistor extending at right angles to the PC board and forming one leg of the U-shaped conductor legs forming the impedance winding around the core.