Invention Grant
- Patent Title: Arrangement and method for controlling a plurality of light-emitting diodes which are connected in series
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Application No.: US15085013Application Date: 2016-03-30
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Publication No.: US09655184B2Publication Date: 2017-05-16
- Inventor: Hongxin Guo , Qiang Cao , Andre Fischer
- Applicant: Varroc Lighting Systems s.r.o.
- Applicant Address: CZ Senov u Noveho Jicina
- Assignee: VARROC LIGHTING SYSTEMS S.R.O.
- Current Assignee: VARROC LIGHTING SYSTEMS S.R.O.
- Current Assignee Address: CZ Senov u Noveho Jicina
- Agency: Law Firm of Ursula B. Day
- Agent Ursula B. Day
- Priority: DE102015104973 20150331
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B39/00 ; H05B33/08

Abstract:
An arrangement and a method for controlling a plurality of light emitting diodes which are connected in series to attain uniform distribution of a total current to several series connections, LED chains, connected in parallel to each other wherein circuitry-related expenditure and power losses occurring during the control process are minimized, include a first reference voltage generating unit and a second reference voltage generating unit, wherein a outlet of the first reference voltage generating unit is connected to a first and a second control circuit, and an outlet of the second reference voltage generating unit is connected to the second and the first control circuit, and an outlet of the first control circuit is connected to a control inlet of the first controllable semiconductor switch, and an outlet of the second control circuit is connected to a control inlet of the second controllable semiconductor switch.
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