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US 7,443,109 B2Granted
LED current pulse limiter arrangement
AssigneePatent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
InventorsPaolo De Anna, Ugo Francescutti
Life of this patent
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Abstract
An arrangement for supplying a constant current to at least one LED includes a current source (2; 2a, 2b) with an output capacitor (3) connected across the terminals of the current source. An output inductor (4) is associated with the output capacitor (3) whereby the current supplied flows through the inductor (4). A smoothing resistor (5) is preferably connected in parallel to the output inductor (4).
Claims13
An arrangement for supplying a constant current to at least one LED, the arrangement comprising:
- a constant current generator for generating a constant current signal, said constant current generator having output terminals;
- an output capacitor connected across said output terminals;
- and
- an output inductor connected with the output capacitor, between said output capacitor and the at least one LED, wherein the constant current signal generated by the constant current generator is supplied to said at least one LED via said inductor.
1 more element
Dependencies are inferred from the claim text.