677 
-38- 
+195 +195 
TRIP PULSE 
~2!5V FLIP FLOP LEVEL SHIFTER SN 
5V TO 
524 HEATERS 
SV 
60 
63V 
2500V INSULATION 
—215v 
VOLTAGES ARE MEASURED BEFORE CIRCUIT IS TRIPPED 
FIG.- 18 
TRIGGER CIRCUIT BEAM BRIGHTENER 
VERL WOODS HOLE, MASS. 
0.S. RLK. 
