A New Approach to Horizontal Deflection Tube Testing

Static methods of testing horizontal deflection tubes have become inadequate and are being replaced by more significant methods of dynamic testing. This paper presents the problems encountered in arriving at a suitable dynamic test. It suggests a desirable test method to drive the horizontal deflection tube with a square-wave signal, thus permitting the measurement of such parameters as peak currents, Ib-to-Ic2 ratio, and the voltage at the knee of the plate characteristic.