Automatic regulators with self-balancing magnetic amplifiers

This paper is concerned with the application of the self-balancing magnetic-amplifier technique in the realm of automatic regulators. It describes two typical examples of such arrangements: 1. A constant-voltage regulator with smoothed low-impedance d-c output to be used for charging of special types of storage batteries, and 2. a constant-light-intensity regulator with a barrier-layer-type photoelectric cell for instrumentation. Both regulators employ self-balancing magnetic amplifiers with infinite internal gain and have excellent performance characteristics with regard to the respective control problems. The paper includes some considerations on the associated constant-voltage and constant-current reference circuits.