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Section V
Figure 5-4
Model 415E
A. TRANSISTOR BIASING
DEVICE
SYMBOL
CUTOFF
CONDUCTING
VACUUM TUBE
PLATE
/3b\
+ 200V
+200V
V
CATHODE
w
NPN TRANSISTOR
COLLECTOR
EMITTER
+ 20V
(OR
-7^*^
+20V
main
+.3v-^m current
CONTROlVjLi
current'
'=•'
P N P TRANSISTOR
COLLECTOR
EMITTER
-20V
IO°RVtT©
-20V
/j)\
main
CONTROL 'll
CURRENT
-
Figure 5-4.
Transistor Biasing and Operating Characteristics
5-12
02152-1
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