TELEPHONE DIAPHRAGMS. 



455 



-20 -1 



MOTIONAL RESISTANCE, OHMS 

 10 20 30 40 50 60 70 80 90 100 110 



Fig. 17. — Motional-Impedance Circles with Different 

 Cap Adjustments. 



100 200 300 400 



cap torque, gm.p. met. 

 Fig. 18. — Curve Showing Relation between Motional- 

 Impedance Circle Diameter and Cap Torque. 



