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. 15, 1994
Filed:
Jun. 03, 1993
William K Sands, Jr, Tucson, AZ (US);
APEX Microtechnology Corporation, Tucson, AZ (US);
Abstract
An improved power operational amplifier device is disclosed which provides a floating buffer having a first and second RC time constant for controlling a first bank of MOSFET transistors in an output portion of the device. In addition, the power operational amplifier includes a fixed buffer having a third RC time constant for controlling a second bank of MOSFET transistors located in an output portion of the device. A current limit section is coupled to both the floating buffer and the fixed buffer, and, in addition, the current limit section of the improved power operational amplifier has an oscillation stabilizer portion for limiting oscillations of output current during output stage current limit operation. The device also includes an output portion coupled to each of the floating buffer, the fixed buffer, and the current limit section.