25 



V + SE-2- 



Figure 11a - Schaevitz Balance Amplifier, Type 60 AD-1, Type 60 AD-2 



Secondary 



Primary 



o o o 



o 



Motor 

 PH-I 



O O- 



[To Lin" 



I Grounded Side 



13 12 || 



[MSLr— xMfiJ ' vJiflJL; ' 



Secondary Primary 



Figure lib - Null Balance System 



IO 



Motor 

 PH-I 



Grounded Side 



cLy 



Secondary 



KS&SIS 



Primary 



Figure lie - Self -Positioning System 



Figure 11 - Schaevitz Balance Amplifier and Interconnection Diagrams 



