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. 09, 2010
Filed:
Sep. 26, 2006
James T. Walker, Palo Alto, CA (US);
James T. Walker, Palo Alto, CA (US);
Abstract
A switched current source has a first voltage source, a second voltage source, and a third voltage source. A first transistor has a drain terminal coupled to one terminal of a load and a source terminal coupled to the third voltage source. A second transistor has drain, gate and source terminals. The drain terminal of the second transistor is coupled to the gate terminal of the first transistor. The source terminal of the second transistor is coupled to the source terminal of the first transistor. The gate terminal of the second transistor is coupled to the first voltage source. A third transistor has drain, gate and source terminals. The drain terminal of the third transistor is coupled to the gate terminal of the first transistor. The source terminal of the third transistor is coupled to the second voltage source. The gate terminal of the third transistor is coupled to the first voltage source.