584 



BELL SYSTEM TECHNICAL JOURNAL 



\_ .14-0 -WATTS .I70-WATTS .275 "WATTS 



Input Voltage 



Fig. 11 — Amplifier No. 1; 1,000 c.p.s.; load 4,000 ohm resistance, 130 volt plate supply 



.04T WATTS 



075 WATTS 



.140 WATTS 275 WATTS 



Fig. 11-A — Projection of output wave from oscillograms of Fig. 11 



