INPUT DC
–
VDC
20 30
C11
0.1
C2
0.1
–
VDC
20 32
GND
C1
0.1
L2
12
T
R1
0.1
R5
0.1
R8
0.1
+
C
V
3
100
50
R2
330
12
V
C12
C13
J1
470
470
25
V
25
V
7
8
1
6
2
4
5
R
K
3
5
VCC
PK
SENSE
DRIVE
COLL
SWITCH
COLL
SWITCH
EMITTER
COMPAR
(–)
INPUT
GND
MC
34063
U
1
R
W
4
330
1/2
3
C
F
10
470
P
3
4
2
1
SM
625
U
2
+
L1
18
T
C4
2.2
K
16
V
C6
0.1
L3
12
T
12
V
C7
0.1
C8
47
16
V
NOTES
:
(
UNLESS OTHERWISE SPECIFIED
)
1.
CAPACITANCE IS IN MICROFARADS
.
2.
RESISTANCE IS IN OHMS
L5
8
T
L4
8
T
Figure 4-12
28V Regulator Board M8A
Schematic Diagram
(990480 Rev. G)
4-21
MT1099A-MS