Invention Grant
- Patent Title: Dimmable driver circuits for light emitting diodes
- Patent Title (中): 用于发光二极管的调光驱动电路
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Application No.: US12371891Application Date: 2009-02-16
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Publication No.: US08207687B1Publication Date: 2012-06-26
- Inventor: Scott Edward Rhodes
- Applicant: Scott Edward Rhodes
- Applicant Address: US TX Houston
- Assignee: Cooper Technologies Company
- Current Assignee: Cooper Technologies Company
- Current Assignee Address: US TX Houston
- Agency: King & Spalding LLP
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H05B37/02 ; H05B39/04 ; H05B41/36

Abstract:
A circuit for dimming a light emitting diode is provided. The circuit includes an alternating current input voltage that is delivered to a light emitting diode. The circuit also includes a correction circuit configured to monitor the input voltage, which also delivers a current to the light emitting diode, wherein the current delivered to the light emitting diode is commensurate with the input voltage. The circuit also includes a simulation circuit electrically coupled to the correction circuit and configured to deliver an additional voltage to the correction circuit to modify a setpoint voltage when the input voltage falls below a predetermined value.
Information query
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