QSC PowerLight Series Technical & Service Manual page 80

PFC
PowerLight 6.0
PowerLight 6.0 II
Class H Step Drivers
NOTE: This opamp must not
clamp its input terminals
together. TL072 or EQIV!!!
5
+
6
-
3
+
CLAMP_SIG
1
2
-
D S
V_MON
LOSS_OF_FEEDBACK
VN
PROTECT
3
+
1
SHED_V
2
-
3 volts here signifies
50 amps output, so
load is likely 2 ohms.
I_MON
2
-
1
3
+
78
_V150
5
+
7
6
-
_N_STEP
VN
7
_V100
5
+
7
6
-
_N_STEP
VN
_V50
3
+
1
2
-
_N_STEP
VN
VN
5
+
7
6
-
VN
3
+
1
2
-
VN
5
+
7
6
-
VN
C33
VP
22u-25V
VN
VN
Clamps caps to 48-54V
_V200
G
_V150
G
5
4
_V100
3
2
1
G
_V50
B4_P
_VTOP
27 V
B4_N
_VBOT
_N_STEP
QSC Audio Products, Inc.
TD-000083-00