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.

Date of Patent:
Nov. 02, 2010

Filed:

Feb. 25, 2009
Applicants:

Kuan-jen Tseng, Sinshih Township, Tainan County, TW;

Ching-wei Hsueh, Sinshih Township, Tainan County, TW;

Inventors:

Kuan-Jen Tseng, Sinshih Township, Tainan County, TW;

Ching-Wei Hsueh, Sinshih Township, Tainan County, TW;

Assignee:

Himax Analogic, Inc., Sinshih Township, Tainan County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
Abstract

An operational amplifier includes an output unit, a voltage drop element and a feedback unit. The output unit is provided for sourcing an output current to an output of the operational amplifier when operating with a power unit for providing a current being multiple times the value of the output current. The voltage drop is provided for generating a voltage drop in accordance with the output current. The feedback unit is controlled with the voltage drop generated by the voltage drop element and controls the output unit and the power unit to regulate the output current in accordance with the voltage drop.


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