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:
Nov. 24, 2015
Filed:
Oct. 05, 2011
Kennedy K. Cheruiyot, Rochester, MN (US);
Joel T. Ficke, Bloomer, WI (US);
David M. Friend, Rochester, MN (US);
Grant P. Kesselring, Rochester, MN (US);
James D. Strom, Rochester, MN (US);
Kennedy K. Cheruiyot, Rochester, MN (US);
Joel T. Ficke, Bloomer, WI (US);
David M. Friend, Rochester, MN (US);
Grant P. Kesselring, Rochester, MN (US);
James D. Strom, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A circuit for implementing a control voltage mirror is provided. A filter includes a filter capacitor connected to a control voltage and a distal side of the capacitor connected to a voltage reference. The control voltage mirror includes an operational amplifier having a positive input connected to the control voltage, and a negative input is connected to an output and coupled to the distal side of the capacitor. Voltage across the capacitor is held to be near or at zero volts, substantially eliminating capacitor leakage current.