SAC SA100, Manual

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SOUTHERN AVIONICS COMPANY
Model SA100 Dual 2-69 Theory of Operation, Radiobeacon
Figure 2-51. Page 1 Autotransfer Logic Schematic
+5V
+5V
+5V
+5V
+5V
+5V
+5V
U6-2/U7-7 U6-4/U7-12 U6-6/R14 U4-4/U7-11 U4-10/U7-6 U2-12/R25 FAIL INDICATION CTRL SEC INDICATION CTRL PRI INDICATION CTRL
IG IG
IG
ET
NOTES 1. THIS DRAWING NO. SEP09906 REV. M. 2. TITLE: AUTOTRANSFER LOGIC PWB SCHEMATIC. 3. ASSEMBLY DWG. NO. SAP09906. 4. ALL RESISTORS 1/4W, UNLESS NOTED. 5. ALL CAPACITORS IN uF, UNLESS NOTED. 6. JP1 AND JP2 NOT USED ON SLP09906.
R9 330K R9 330K
CR2
1D523600
CR2
1D523600
R23 10K R23 10K
DOUT
4
CIN
3
FOUT
6
OSCIN
7
DIN
12
EOUT
11
BIN
14
AOUT
15
EIN
5
BOUT
2
OSCOUT
9
FIN
10
AIN
1
VDD
16
VSS
8
COUT
13
U3
1U144900
U3
1U144900
R16 3.9K R16 3.9K
8 9
10
U5CU5C
3
2
1 8
U2A
1U404900
U2A
1U404900
5
4
U6BU6B
5 6
4
U1BU1B
1 2
3
14 7
U4A
1U407000
U4A
1U407000
7
6
U6CU6C
11
12
U2EU2E
R20 10K R20 10K
R1 22K R1 22K
+
C5 6.8
+
C5 6.8
R2 10K R2 10K
R17 10K R17 10K
Q6 1T344000 Q6 1T344000
CR3
1D400400
CR3
1D400400
9
10
U2DU2D
5 6
4
U5BU5B
5 6
4
U4BU4B
Q5 1T344000 Q5 1T344000
C13 0.1 C13 0.1
1 2
3
14 7
U5A
1U400100
U5A
1U400100
3
2
1 8
U6A
1U404900
U6A
1U404900
12 13
11
U4DU4D
+
C1 33
+
C1 33
C2 0.1 C2 0.1
5
4
U2BU2B
+
C3 6.8
+
C3 6.8
Q4 1T344000 Q4 1T344000
C7 0.1 C7 0.1
CR1
1D523600
CR1
1D523600
8 9
10
U1CU1C
R6 220K R6 220K
1 2
3
14 7
U1A
1U401100
U1A
1U401100
C11 0.1 C11 0.1
R5 10K R5 10K
14
15
U2FU2F
C12 0.1 C12 0.1
R22 3.9K R22 3.9K
C8 0.1 C8 0.1
7
6
U2CU2C
R3 22K R3 22K
R4 10K R4 10K
8 9
10
U4CU4C
C4 0.05 C4 0.05
R27 150K R27 150K
C9 0.1 C9 0.1
R19 3.9K R19 3.9K
12 13
11
U1DU1D