ENERGY SUPPLY FOR A LIGHT HAVING A MATRIX OF LEDS, IN PARTICULAR AN LED MOTOR VEHICLE HEADLIGHT
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United States of America
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Issued Date -
Mar 20, 2025
app pub date -
Dec 5, 2024
filing date -
Dec 5, 2024
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Abstract
A circuit arrangement for a light having: an input for connection to a supply network; an adjustable voltage source, an input of the voltage source; a matrix of LEDs connected to the output of the voltage source; and a control unit to which the control connection of the voltage source is connected. The circuit arrangement has series circuits including at least one LED and one adjustable current source. The series circuits are connected in parallel, thus forming the matrix. The voltage source adjusts its output voltage to the setpoint voltage value provided by the control connection by the control unit. The control unit has an input for reading in: status information about the temperature in the matrix; measurement values for temperatures of the LEDs; measurement values for the voltages across the current sources; measurement values for the voltage across the matrix; and measurement values for the voltages at the LEDs.
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