| abstract |
The invention relates to an optoelectronic circuit (30) for receiving a variable voltage (V ALIM ) comprising alternating increasing and decreasing phases. The optoelectronic circuit includes an alternating arrangement of resistive elements (Ri) and light-emitting diode sets (Di) mounted in series. Each set contains two terminals. Each resistive element is inserted between two consecutive sets. The optoelectronic circuit includes, for each set among a plurality of said sets, a depletion mode metal oxide semiconductor field effect transistor (Ti), the drain and the source of which are coupled with the terminals of said set and the gate of which is coupled with one of the terminals of the next set. An additional resistive element (R'i) is, for at least some of the transistors, coupled between the drain or the source of the transistor and one of the terminals of the set. |