Invention Grant
- Patent Title: LED driver circuits and methods
- Patent Title (中): LED驱动电路及方法
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Application No.: US13416107Application Date: 2012-03-09
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Publication No.: US09155139B2Publication Date: 2015-10-06
- Inventor: Yutao Wang , Darrell S. Filtz
- Applicant: Yutao Wang , Darrell S. Filtz
- Applicant Address: US OH Mayfield Height
- Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
- Current Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
- Current Assignee Address: US OH Mayfield Height
- Agency: Quarles & Brady LLP
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B33/08
Abstract:
An LED driver circuit that can regulate the input signal voltage so that the driver circuit can be used over wide input voltage range or at predetermined voltages. Discrete components are used to drive an LED array with a constant current. The LED driver circuit includes a dynamic current regulator. The dynamic current regulator includes a resistor and capacitor in parallel to provide dynamic current regulation to a switching mode power supply circuit that controls the LED illumination.
Public/Granted literature
- US20130234620A1 LED Driver Circuits and Methods Public/Granted day:2013-09-12
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