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:
May. 16, 2000
Filed:
Jan. 28, 1999
Jimmie D Felps, Colorado Springs, CO (US);
Hewlett--Packard Company, Palo Alto, CA (US);
Abstract
A first current source supplies current to the collector of an emitter follower stage and a sense transistor. The sense transistor programs a current mirror so that most of the base current required by the emitter follower transistor comes from the current mirror instead of the input. A second current source that requires more current that the first current source supplies is connected to the output of the emitter follower and sinks the current coming out of the emitter of the emitter follower and the collector current of a load transistor. The load transistor supplies the difference in current between the amount of current supplied by the first current source and the amount sunk by the second current source.