vollselbsttaetige electrical carbon arc lamp, in particular high power arc lamp, in which, in a function of the for the mode of operation of the arc significant operation of removing coarse sen - in particular light arc amperage, arc voltage and electrodes position - selbsttaetig both of the electrodes advance readjusted and exceeding the hoechst permissible local limiting positions of the electrode ends (burning) as well as selbsttaetig the electrodes feed speed is controlled by means of