Circuit arrangement for supplying current to light emitting diode, has downward controller with input and output connected with respective input terminals for positive and negative potentials of input voltage

摘要

The arrangement has a downward controller (R) with an input (3) that is indirectly connected with an input terminal (1) of the arrangement for the positive potential of an input voltage (Ue). An output (4) of the controller is connected with another input terminal (1`) under interconnection of an inductor (L) for the negative potential of the input voltage. An output terminal is connected with the latter terminal for the positive potential of an output voltage (Ua). A capacitor is recharged by the inductor.