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Macro-Tech 24x6 & 36x12 Power Amplifiers
Fig. 5.5 Circuit Block Diagram
(Channel 1)
ONLY ONE CHANNEL SHOWN
NPN HI
OUTPUT
STAGE
NPN LOW
OUTPUT
STAGE
PNP LOW
OUTPUT
STAGE
PNP HI
OUTPUT
STAGE
+
OUTPUT
+Vcc
–Vcc
TRANSLATOR
LVA
LVA
+Vcc
–Vcc
BIAS
CURRENT
LIMIT
TRANSLATOR
BALANCE
INPUT STAGE
P.I.P.
BALANCED
INPUTS
XLR
VARIABLE
GAIN STAGE
ERROR
AMP
BIAS
BRIDGE
BALANCE
+Vcc
–Vcc
POWER
SUPPLY
CONTROL
DC/LF
FAULT
VZ
MODE
CONTROL
POWER
+Vcc
–Vcc
ODEP
A
B
B
(ODEP)
D
(ODEP)
SUPPLY
E
E
(ODEP)
A
(ODEP)
C
(ODEP)
C
D
DISPLAY
1/4" PHONE
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