An electronic regulator for D-C generators

A voltage regulator using grid-controlled arc-discharge tubes as rectifiers under the control of a diode to supply field current for d-c generators is described in this paper. The regulator has demonstrated an over-all sensitivity of plus or minus 0. 5 per cent with a supply voltage change of 10 per cent, and is comparable in cost to the usual electromagnetic regulators, but requires an a-c supply.