Control device for use with gas discharge lamp with variable brightness has choke to receive and create digital guiding signal for determining specific lamp brightness and intermediate signal for emitting resolution signal.

摘要

A choke (9) receives and creates a digital guiding signal (E) for determining specific lamp brightness. An intermediate signal (15) emits a pulse-width-modulated intermediate signal (Z). A control output (16) emits a resolution control signal (F). A level-influencing circuit (11) has a signal input (17) for the pulse-width-modulated intermediate signal, a resolution control input (18) and a signal output (10) for a pulse-width-modulated output signal. An Independent claim is also included for a method for controlling brightness in a lighting device by means of a digital guiding signal via a brightness control signal.