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:
Oct. 31, 2006
Filed:
Oct. 24, 2005
Robert J. Drost, Mountain View, CA (US);
R. David Hopkins, Hayward, CA (US);
Ronald Ho, Mountain View, CA (US);
Robert J. Drost, Mountain View, CA (US);
R. David Hopkins, Hayward, CA (US);
Ronald Ho, Mountain View, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
An electrical circuit for determining a capacitance is described. The electrical circuit includes a first device, a rectifying circuit and a feedback circuit. The first device has a first terminal and a second terminal. The first device has a first unknown capacitance and the first terminal may be configured to receive a time-varying voltage signal. The rectifying circuit has an input terminal, an output terminal and a feedback terminal. The input terminal may be coupled to the second terminal and the output terminal may be configured for coupling to an output electrical circuit. The feedback circuit may selectively couple the output terminal to the input terminal using the feedback terminal such that the output terminal and the input terminal are substantially at a common voltage.