Circuit arrangement for adjusting the brightness of lamps

摘要

The invention relates to a circuit arrangement for adjusting the brightness (dimmer) of lamps (8) having a control circuit for the phase of the supply voltage for limiting the current fed to the lamps (8). So that the brightness of so-called energy-saving lamps, in particular when used simultaneously with conventional filament lamps, can also be adjusted, it is proposed according to the invention that the control circuit (6) for the phase of the supply voltage limit the amplitude of the supply voltage symmetrically to their (its) maximum values as a function of the desired brightness. By means of such a dimmer, the brightness of energy-saving lamps and filament lamps present in an illumination system are controlled in approximately the same manner. <IMAGE>