Paul D. Filliman

An Automatic Kinescope Biasing System

An automatic kinescope biasing system has been developed which addresses many of the classical problem in this type of system. The system uses a grid pulsing technique to gain inmunity to heater-cathode leakage. The current reference employed varies with the cutoff of the gun in use to minimize bias error and a unique kine driver configuration allows cathode current and sensing to be performed at a low voltage, low impedance output without the use of extra semi-conductor devices. The operation of the system is described and all pertinent relationships are derived.