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:
Mar. 31, 2020
Filed:
Sep. 06, 2018
Agieminds Micro Optics Co., Ltd., New Taipei, TW;
Chih-Yi Yang, Taipei, TW;
Jui-Huang Cheng, Taipei, TW;
Agieminds Micro Optics Co., Ltd., New Taipei, TW;
Abstract
A precision control device generally includes a current-limiting resistance, a voltage control unit, and a feedback voltage regulation unit. The current-limiting resistance has a grounded end and is serially connected to a DC load. The voltage control unit includes a microprocessor, an ADC, and a DAC. The feedback voltage regulation unit includes at least one operational amplifier and a transistor having a control input, a collector, and an emitter. The transistor is configured to operate at an unsaturated region, wherein the control input thereof receives a signal sent from an output terminal of the operational amplifier. The precision control device enables a power supply to smoothly adjust a predetermined output voltage set value for the DC load in response to a deviation of a voltage applied to the DC load. As such, the current flowing through the DC load and the current-limiting resistance can be regulated at a stable level.