Hitachi SR-2004 - Idle Current Compensation Circuit Against Power Supply Voltage Fluctuations; Protection Circuits

lC204 "'201 le203 *
•
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Q202
MF201 IC201 NARROW
1-E!i-{>-MF202
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IC30\
IC202
Sep. adJ.
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CP301
HITACHI SR-2004
MF203
IF BAND Sw.
S503
,1 +15V
I 0 L
R
Fig. 1
•
•
Hioh voltage power supply
I. .. Alimentation haute tension
+B2C98.8V)
Low voltaoe power supply
I ~ 'i 14 • Alimentation basse tension
." +BI(40.2V)
Low voltaoe power supply
• 1M'" Allmentat Ion basse 'tension
-BIC-40.2V)
High volt* power supply
"
• Alimentation haute tension
-82{-98.8V)
Fig. 2
R703
It)
II')
C
N
IN
I • •• +82
t· -:.. J 1" NPN
To the NPN driver
+~ I Au transistor de
:"'01 Vldle puissance NPN
• I I. PNP
To the PNP driver
Au transistor de
puissance PNP
I' T \~ • I .. 82
For temperature compensation of the Idle current ot output .tage
Pour compensation de temperoture de courant dewatte
de I' 'tage de sortie.
Fig. 3
00'4
eontlnu
ot Ie
de Ie
• ... - 82
I It It I ,
-11-
Fig. 4