Light device deriving condition of storage circuit

Abstract

A device for providing power to a light arrangement () having a current conducting state and a current blocking state. The device comprises a storage circuit () with a capacitor () coupled to the light arrangement () and a resistor () located in parallel to the capacitor, a first determination circuit () for determining the state of the lighting arrangement, a second determination circuit () for, in the current blocking state, determining points of two discharging curves of the storage circuit, a derivation circuit () for deriving a condition of the storage circuit, such as life-end, from the discharging curves, a switch circuit () comprising an element (), wherein the switch circuit is configured to switch the element () in parallel to the capacitor (), whereby a first discharging curve is determined with the element being disconnected from the capacitor and a second discharging curve is determined with the element being connected to the capacitor, the capacitor discharging via both the resistor () and the element (). The element () may comprise a resistor, a capacitor or an inductor.