An Improved Current Integrator

Abstract

An improved integrator circuit for measuring the ion beam current used in nuclear research is described. A condenser is allowed to be charged and upon reaching a definite potential is discharged through a thyratron tube. This action is brought about at the proper point by a trip circuit composed of two pentode tubes. The potential between the thyratron cathode and the trip circuit is accurately controlled by a voltage regulator network. The action of the circuit proves to be quite linear over a wide range of currents and rates of operation.