Driving a lighting element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10820389
APP PUB NO 20170332450A1
SERIAL NO

15526053

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Importance

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Abstract

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An analogue dimmer driver for driving an LED lighting element (54) to generate coded light comprises an output component (54) which provides a primary current (ipr), a capacitor (53) connected to the output component, a switch (S1) via which the lighting element is connectable to the current source in parallel with the capacitor. Switching is performed by periodically opening and closing the switch to code information into light generated by the lighting element. The output component has an input configured to receive a dimming signal. Responsive to a change in the dimming signal: i) the primary current is increased so as to increase the average power of the generated light and ii) the duty cycle of the switching is increased by an amount sufficient to prevent the peak level of the current though the lighting element when the switch is closed (ipr+idis) from exceeding a predetermined level (inom).

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blum, Martinus Wilhelmus Eindhoven, NL 21 136
Zijlman, Theo Gerrit Tilburg, NL 18 49

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