SOUTHERN AVIONICS COMPANY
Model SA100 Dual
2-30
Theory of Operation, Radiobeacon
Figure 2-18. Power Amplifier Schematic
CARR IN
LV
LV
VMOD
RF OUT
RFV
ISAM
VSAM
RFV
CARR IN
TSAM
+5V
+12V
+12V
+12V
+5V
+12V
+12V
+12V
NOTES 1. THIS DRAWING NO. SEP29600 REV. M. 2. TITLE: SPA PCB SCHEMATIC. 3. ASSEMBLY DWG. NO. SAP29600. 4. ALL RESISTORS 1/4W, 1%, UNLESS NOTED. 5. ALL CAPACITORS IN uF, UNLESS NOTED. 6. R15, R16, AND RT1 USED ON SLP29610 ONLY. 7. R9: 10K OHMS - SLP29600 39K OHMS - SLP29610
SEE NOTE 7.
C4 0.47 400V
C4 0.47 400V
CR2
1D474400
CR2
1D474400
R4 4.7
1/2 W
R4 4.7
1/2 W
TP2 +12V
TP2 +12V
A
B
A'
B'
T1
SLE12970
16:16
T1
SLE12970
16:16
C6 1.0
C6 1.0
CR4
1D474400
CR4
1D474400
R12 10K
R12 10K
Q3 1T372500
Q3 1T372500
Q1 1T372500
Q1 1T372500
TP0 GND
TP0 GND
TP4TP4
C5 1.0 400V
C5 1.0 400V
3
4
U2BU2B
1
2
14
7
U2A 1U740600
U2A 1U740600
Q4 1T403200
Q4 1T403200
C9 0.01
C9 0.01
+12V
1
+5V
3
VSS
2
U1
1U780500
U1
1U780500
R6 4.7
1/2 W
R6 4.7
1/2 W
R8 100K 1/2 W
R8 100K 1/2 W
R10 0.02 3 W
R10 0.02 3 W
R11 10K
R11 10K
R2 470 1/2 W
R2 470 1/2 W
C7 0.001
C7 0.001
F1 3A
F1 3A
Q5
1T250001
Q5
1T250001
+
C1 33
+
C1 33
t
RT1 1K
t
RT1 1K
A
B
A'
B'
T3
SLE45650
8:22
T3
SLE45650
8:22
R7 680 1/2 W
R7 680 1/2 W
TP1 +5V
TP1 +5V
CR5
1D440000
CR5
1D440000
R5 680 1/2 W
R5 680 1/2 W
5
6
U2CU2C
CR1
1D474400
CR1
1D474400
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
P1
GOLD FINGERS (22X)
P1
GOLD FINGERS (22X)
TP3TP3
A
B
A'
B'
T2
SLE12970
16:16
T2
SLE12970
16:16
CR9 1D400400
CR9 1D400400
R9 10K
R9 10K
C8 0.001
C8 0.001
CR3
1D474400
CR3
1D474400
C2 1.0
C2 1.0
Q6
1T250001
Q6
1T250001
Q2 1T403200
Q2 1T403200
R3 470 1/2 W
R3 470 1/2 W
CR6
1D440000
CR6
1D440000
9
8
U2DU2D
R14 33
R14 33
R16 1K
R16 1K
R15 1.5K
R15 1.5K
+
C3 33
+
C3 33
R13 100K
R13 100K
Summary of Contents for SA100
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