A device to automatically limit excessive Beam Currents driven by a kinescope above a Threshold Level.

摘要

Electronic Circuit to limit above a Threshold Level Beam Currents driven by a tube in a television receiver. Is composed of a control Circuit (60) of a Voltage Fed to Abl (EC), which represents the demand of average current Beam kinescope (38).This tension is obtained by means of a detector Circuit (54), whose input is connected to a source (50) that generates High Voltage to the electrodes of the kinescope and Resistance (52) whose End is the operating Voltage (B +). The control Circuit provides two signals of Beam current limiting.