OEC COMPACT 7600 Series, Block Diagrams

Page: 32 / 54

Page 2 of 4
For Reference Only
mA GENERATION & REGULATION
3/7/97 MA.DS4
B143 FILAMENT CONTROL
COMPACT / SERIES 7600
B143
U12
+
-
X1
U13
+
-
U12
FILAMENT
mA
SELECT
LOGIC
U3
U4
U1
+10V
P7
Low End
of mA
Slope
-SIPU*
-BECK*
MAIST
-QMA05
D
E
F
G
One Shot (8mA Mode)
Hip / Boost (6mA Mode)
Actual mA Sense
Temperature > 62 degrees C
(0.5mA Mode)
From page 1
From page 1
From page 1
From page 1
From kV Generation & Regulation
diagram, page 1
KVSOLL
+10V
+10V
+10V
+10V
+10V
P2
Film
Mode
20mA
0.5mA
6mA Slope
3mA Slope
U10
U9
U8
18A
17A
12A
+6mA Control
+3mA Control
+8mA Control
+20mA Control
+0.5mA Control
+Offset Control
12
10
8
6
11
9
2
3
6
10A
2
1
+Slope Select
13
+6mA Control
+3mA Control
+Slope Select
+8mA Control
8mA
+20mA Control
+0.5mA Control
11
12
6
8
4
5
10
9
3
Offset
6mA
+6mA Control
+3mA Control
3mA
+Offset Control
8
12
10
8
6
1
13
11
9
2
TP4
MAIST
Actual mA Sense
6
5
7
TP2
TP3
R38
R37
3
1
+10V
P3
Fluoro
Preheat
P4
Film
Preheat
K2
Open during
Film mode
FILAMENT
VOLTAGE
REGULATION
and
OVERVOLTAGE
PROTECTION
U12, U11, U7,
K1, K2, K3
UH
FILAMENT VOLTAGE
To page 3
(See page 4, chart 1 for voltages)
X3 4
T1
BRIDGE
B1
24VAC
24VDC
F1
X2 5
AC POWER IN
See Power diagram
Compact / Series
10 VOLT
REFERENCE
GENERATOR
U5, U6
P5
10V
Adjust
NG1
POWER
SUPPLY
See
Power
Diagram
Compact
or Series
16VDC
27A
+10
-10
TP5
TP6
A
P6
P1
TP1
kV Gnd
H
-DA
Film Mode (20mA Mode)
From page 1
11C
9C
F4
10A
J
-XRAY
2.5A
+
R52
U100
+
-
2
3
6
P8
10R/Min
Limit
TP9
TP8
TP7
(Use TP1 as GND)
1
See page 4, chart 2 for voltages
1
1
1
2
2
2
2
High on control line closes switch
High end of mA slope
NOTES:
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An Independent C-Arm Service Provider. This PDF provided for research / historical purposes only.