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1
1
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4
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A
A
B
B
C
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D
D
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A
B
B
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D
Date:
Date:
KiCad E.D.A. 9.0.0
KiCad E.D.A. 9.0.0
Rev:
Rev:
Size: A4
Size: A4
Id: 1/8
Id: 1/8
Title:
Title:
File: diagrams.kicad_sch
File: diagrams.kicad_sch
Sheet: /
Sheet: /
receiver
receiver
File: untitled.kicad_sch
File: untitled.kicad_sch
AM demodulation
AM demodulation
File: untitled.kicad_sch
File: untitled.kicad_sch
audio intensitity meter
audio intensitity meter
File: untitled.kicad_sch
File: untitled.kicad_sch
audio peak finder
audio peak finder
File: untitled.kicad_sch
File: untitled.kicad_sch
initial amplifier
initial amplifier
File: untitled.kicad_sch
File: untitled.kicad_sch
volume boost amplifier
volume boost amplifier
File: untitled.kicad_sch
File: untitled.kicad_sch
push pull power amplifier
push pull power amplifier
File: untitled.kicad_sch
File: untitled.kicad_sch
R7
R7
1K
1K
GND
GND
VSS
VSS
1
1
2
2
LS1
LS1
Speaker
Speaker
B
B
C
C
E
E
Q2
Q2
NPN
NPN
-15V
-15V
+15V
+15V
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
U4
U4
TL081
TL081
GND
GND
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
BAR1
BAR1
HDSP-4830_2
HDSP-4830_2
1
1
2
2
3
3
4
4
5
5
RN1
RN1
470
470
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
U5
U5
TL081
TL081
GND
GND
R5
R5
4.7M
4.7M
R4
R4
2M
2M
GND
GND
+15V
+15V
VSS
VSS
D2
D2
D
D
VCC
VCC
R6
R6
10M
10M
C3
C3
360p
360p
VSS
VSS
RB0/INT/CCP1
RB0/INT/CCP1
6
6
RB1/SDI/SDA
RB1/SDI/SDA
7
7
RB2/SDO/RX/DT
RB2/SDO/RX/DT
8
8
RB3/PGM/CCP1
RB3/PGM/CCP1
9
9
RB4/SCK/SCL
RB4/SCK/SCL
10
10
RB5/~{SS}/TX/CK
RB5/~{SS}/TX/CK
11
11
RB6/AN5/PGC/T1CKI
RB6/AN5/PGC/T1CKI
12
12
RB7/AN6/PGD/T1OSI
RB7/AN6/PGD/T1OSI
13
13
VDD
VDD
14
14
VSS
VSS
5
5
AN0/RA0
AN0/RA0
17
17
AN1/RA1
AN1/RA1
18
18
Vref-/CVref/AN2/RA2
Vref-/CVref/AN2/RA2
1
1
C1OUT/Vref+/AN3/RA3
C1OUT/Vref+/AN3/RA3
2
2
C2OUT/T0CKI/AN4/RA4
C2OUT/T0CKI/AN4/RA4
3
3
~{MCLR}/Vpp/RA5
~{MCLR}/Vpp/RA5
4
4
CLKOUT/OSC2/RA6
CLKOUT/OSC2/RA6
15
15
CLKIN/OSC1/RA7
CLKIN/OSC1/RA7
16
16
U3
U3
PIC16F88-IP
PIC16F88-IP
GND
GND
-15V
-15V
B
B
C
C
E
E
Q1
Q1
PNP
PNP
VSS
VSS
VCC
VCC
L1
L1
1.1m
1.1m
R3
R3
750K
750K
VSS
VSS
R1
R1
1M
1M
+15V
+15V
R2
R2
4.7M
4.7M
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
U1
U1
TL081
TL081
D1
D1
D
D
C4
C4
390n
390n
GND
GND
+5V
+5V
C2
C2
100p
100p
VCC
VCC
+15V
+15V
C1
C1
470p
470p
GND
GND
-15V
-15V
VSS
VSS
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
U2
U2
TL081
TL081
GND
GND
VCC
VCC
VCC
VCC
-15V
-15V
+15V
+15V
VSS
VSS
VCC
VCC
L1
L1
1.1m
1.1m
+5V
+5V
+15V
+15V
C1
C1
470p
470p
GND
GND
VSS
VSS
U2
U2
TL081
TL081
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
RN1
RN1
470
470
1
1
2
2
3
3
4
4
5
5
GND
GND
R4
R4
2M
2M
+15V
+15V
VSS
VSS
D2
D2
D
D
VCC
VCC
R6
R6
10M
10M
C3
C3
360p
360p
VSS
VSS
GND
GND
-15V
-15V
U3
U3
PIC16F88-IP
PIC16F88-IP
RB0/INT/CCP1
RB0/INT/CCP1
6
6
RB1/SDI/SDA
RB1/SDI/SDA
7
7
RB2/SDO/RX/DT
RB2/SDO/RX/DT
8
8
RB3/PGM/CCP1
RB3/PGM/CCP1
9
9
RB4/SCK/SCL
RB4/SCK/SCL
10
10
RB5/~{SS}/TX/CK
RB5/~{SS}/TX/CK
11
11
RB6/AN5/PGC/T1CKI
RB6/AN5/PGC/T1CKI
12
12
RB7/AN6/PGD/T1OSI
RB7/AN6/PGD/T1OSI
13
13
VDD
VDD
14
14
VSS
VSS
5
5
AN0/RA0
AN0/RA0
17
17
AN1/RA1
AN1/RA1
18
18
Vref-/CVref/AN2/RA2
Vref-/CVref/AN2/RA2
1
1
C1OUT/Vref+/AN3/RA3
C1OUT/Vref+/AN3/RA3
2
2
C2OUT/T0CKI/AN4/RA4
C2OUT/T0CKI/AN4/RA4
3
3
~{MCLR}/Vpp/RA5
~{MCLR}/Vpp/RA5
4
4
CLKOUT/OSC2/RA6
CLKOUT/OSC2/RA6
15
15
CLKIN/OSC1/RA7
CLKIN/OSC1/RA7
16
16
GND
GND
GND
GND
U4
U4
TL081
TL081
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
Q2
Q2
NPN
NPN
B
B
C
C
E
E
-15V
-15V
U5
U5
TL081
TL081
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
VSS
VSS
Q1
Q1
PNP
PNP
B
B
C
C
E
E
+15V
+15V
+15V
+15V
-15V
-15V
VCC
VCC
GND
GND
-15V
-15V
VCC
VCC
C2
C2
100p
100p
GND
GND
C4
C4
390n
390n
D1
D1
D
D
U1
U1
TL081
TL081
+
+
3
3
-
-
2
2
V+
V+
7
7
V-
V-
4
4
NULL
NULL
1
1
NULL
NULL
5
5
6
6
+15V
+15V
R1
R1
1M
1M
VSS
VSS
R3
R3
750K
750K