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. 18, 2000
Filed:
Jan. 15, 1998
Pieter Schieke, Phoenix, AZ (US);
Microship Technology Incorporated, Chandler, AZ (US);
Abstract
A Full-Wave Bridge Rectifier (FWBR) input structure for use in an electrical system is delineated comprising, in combination, a pair of input nodes, and a pair of parasitic BJTs coupled in parallel with the pair of input nodes wherein each parasitic BJT has more than one collector. The input structure also includes an inductor and a capacitor connected in parallel across the pair of input nodes; however, one or more inductors, one or more capacitors, a transformer, or the like could be substituted. Each parasitic BJT also has a base coupled to ground through a resistor, a collector tied directly to ground, and another collector tied to a supply voltage VDD through a resistor. The area associated with each emitter is smaller than the area associated with their respective collector coupled to VDD. This arrangement of the parasitic BJTs assists in minimizing their gain in order to diminish their draw on a downstream power supply.