SAC SA100, Manual

Page: 77 / 224

SOUTHERN AVIONICS COMPANY
Model SA100 Dual 2-47 Theory of Operation, Radiobeacon
Figure 2-32. DC Power Supply PWB Schematic (Single Units)
GN
D
GN
D
DC IND
EXCV RF
V
HV OUT SHU
TD
O
W
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RF
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+12V +12V
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1
. T
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IS
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NO.
SEP30330
REV.
D.
2
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ITLE:
DC
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SI
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SCHEMATI
C.
3.
ASSEMBLY
DW
G.
NO.
SAP30330.
4
. A
LL RESI
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UNLESS NOTED.
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8
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CR4
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400400
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16
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COMP
9
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4
-SENSE
5
SHTDWN
10
RT
6
CT
7
CA
12
EA
11
CB
13
EB
14
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3
GND
8
L1
1L0000
06
TP2
+ -
U5C
10
9
8
R10 1.
2K
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R16 22K
R21 4.
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14
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1
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211000
LO
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-
4
VS
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VB
6
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7
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8
VDD
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SD
11
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7
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324000
5 6
7
4 11
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6
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R14 4.
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F1 3A
R3 **
P1
GOLD FI
NG
E
R
S
(2
2X
)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
CR9
1D
523900
R5 1.
8K
U3
1U
211000
LO
1
COM
2
VCC
3
-
4
VS
5
VB
6
HO
7
-
8
VDD
9
HIN
10
SD
11
LIN
12
VSS
13
-
14
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1U
352400
V-
1
V+
2
VREF
16
VIN
15
COMP
9
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4
-SENSE
5
SHTDWN
10
RT
6
CT
7
CA
12
EA
11
CB
13
EB
14
OSCOUT
3
GND
8
C6 3.
3
400V
R2
2
10K
CR2
1D
440000
R12 100K
CR1
1D
154000
R3
1
10K 1%
R28 10K
R6 10K
CR
10
1D
440000
R23 22K 1%
TP1
R29 10K
CR8
1D
066200
R19 39K
R2
0
390
R2 10K
R27 10K
R7 33K
W3 GND
CR
11
1D
440000
R3
2
390
C5 0.
047
W1 BT
R
Y
F2 2A
R24 82.
5K
1%