Stabilized High Voltage Power Supply for Electrostatic Analyzer

An a.c. operated power supply has been developed which furnishes voltage for the electrostatic analyzers for the University of Wisconsin electrostatic generator. Voltage is continuously variable from about 5000 to 50,000 with stability and accuracy of measurement within ±0.01 percent. The stabilizer is of the usual degenerative type, but the error signal is amplified by a phototube galvanometer d.c. amplifier and applied to a series impedance in the high voltage transformer primary circuit. The generator beam energy automatically follows adjustments of a low voltage potentiometer used for voltage measurements in this supply.