Driving a light emitting diode circuit

Abstract

An apparatus for driving a light emitting diode circuit (1) comprises first and second terminals (11,12) to be connected to the light emitting diode circuit (1), a capacitor (31) connected to the first and second terminals (11,12), a switch (41) for, in a conducting mode, bypassing the light emitting diode circuit (1), and a diode (51) for, in the conducting mode, preventing the capacitor (31)from being discharged via the switch (41). In this way, a reduced switch-on delay is realized without an additional switch being required for activating and deactivating said capacitor (31). The diode (51) is simpler and cheaper and more robust than such an additional switch and does not require a control. Preferably, the apparatus comprises a further terminal (13), wherein the diode (51) is connected to the further terminal (13) and to one of the first and second terminals (11,12), and the switch (41) is connected to the further terminal (13) and to the other one of the first and second terminals (11,12).

Dependencies are inferred from the claim text.