610 BELL SYSTEM TECHNICAL JOURNAL 



solvent and forming a continuous series of solid solutions with the 

 solute, might be of advantage to other kinds of age-hardenable binary 

 alloys. 



A Precision Regulator for Alternating Voltage}^ H. M. Stoller 

 and J. R. Power. In this paper a recently developed precision 

 voltage regulator for use with alternating current is described. It 

 will maintain its output voltage constant to within 0.03 per cent over 

 an input voltage range of 10 per cent and a load range of from zero 

 to full load. 



This regulation is accomplished by means of a small transformer 

 inserted in one of the lines which boosts or bucks the impressed 

 voltage by the required amount. The transformer is controlled by a 

 vacuum tube circuit acting through an inductance bridge. 



15 Journal of the A. I. E. E., February, 1929, Vol. 48, pp. 110-113. 



