Invention Grant
US09363862B1 Automatic current and reference gain control for wide range current control
有权
自动电流和参考增益控制用于宽范围电流控制
- Patent Title: Automatic current and reference gain control for wide range current control
- Patent Title (中): 自动电流和参考增益控制用于宽范围电流控制
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Application No.: US14096407Application Date: 2013-12-04
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Publication No.: US09363862B1Publication Date: 2016-06-07
- Inventor: Wei Xiong , Candice Ungacta , John J. Dernovsek
- Applicant: Universal Lighting Technologies, Inc.
- Applicant Address: US AL Madison
- Assignee: Universal Lighting Technologies
- Current Assignee: Universal Lighting Technologies
- Current Assignee Address: US AL Madison
- Agency: Patterson Intellectual Property Law, P.C.
- Agent Mark J. Patterson
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H05B37/02 ; H05B39/04 ; H05B41/36 ; G05F1/10
Abstract:
A constant current source has an increased differential amplifier gain at low output currents and a decreased differential amplifier gain at high output currents. The differential amplifier amplifies a sensed output current of the constant current source. A gain control circuit scales a reference current in conjunction with the gain applied to the sensed output current to maintain stable operation of the constant current source. The constant current source may be used in a driver circuit to provide power to a light source (e.g., an LED light).
Information query
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