EESchema Schematic File Version 4
EELAYER 26 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Connector:Conn_Coaxial J1
U 1 1 5E4CB6F5
P 2350 3350
F 0 "J1" V 2587 3280 50  0000 C CNN
F 1 "Conn_Coaxial" V 2496 3280 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 2350 3350 50  0001 C CNN
F 3 " ~" H 2350 3350 50  0001 C CNN
	1    2350 3350
	0    -1   -1   0   
$EndComp
$Comp
L power:GND #PWR0101
U 1 1 5E4CB7A8
P 2350 3550
F 0 "#PWR0101" H 2350 3300 50  0001 C CNN
F 1 "GND" H 2355 3377 50  0000 C CNN
F 2 "" H 2350 3550 50  0001 C CNN
F 3 "" H 2350 3550 50  0001 C CNN
	1    2350 3550
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C2
U 1 1 5E4CB80B
P 2900 3350
F 0 "C2" V 3155 3350 50  0000 C CNN
F 1 "10uf" V 3064 3350 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 2900 3350 50  0001 C CNN
F 3 "~" H 2900 3350 50  0001 C CNN
	1    2900 3350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2550 3350 2750 3350
Text Notes 1800 1725 0    50   ~ 0
Schematic from Page 959 of\nPractical Electronics for\nInventors (Scherz, and Monk)\n4th Edition\n
Text Notes 850  4550 0    50   ~ 0
They recommend a 10uf Polarized\ncap. The cap MUST be high enough\nso that its impedance does not cut\ndown the audio signal. See my docs.\nA 10uf (or higher) is OK. a 1uf will NOT\nwork. Impedance increases exponentially or\nlogarithmicly\nas values go down in capacitance.\nValues even as high as 1000uf will be ok.\n(possibly higher). Being too low, will\nresult in impedance / esr (or aging of \ncap).\n\n
$Comp
L pspice:OPAMP U1
U 1 1 5E4CBEC8
P 3350 3450
F 0 "U1" H 3650 3625 50  0000 L CNN
F 1 "LM383" H 3675 3300 50  0000 L CNN
F 2 "Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical" H 3350 3450 50  0001 C CNN
F 3 "~" H 3350 3450 50  0001 C CNN
	1    3350 3450
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C1
U 1 1 5E4CC090
P 2875 3925
F 0 "C1" H 2993 3971 50  0000 L CNN
F 1 "470uf" H 2993 3880 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 2913 3775 50  0001 C CNN
F 3 "~" H 2875 3925 50  0001 C CNN
	1    2875 3925
	1    0    0    -1  
$EndComp
Wire Wire Line
	3050 3550 2875 3550
Wire Wire Line
	2875 3550 2875 3775
Wire Wire Line
	2875 4075 3650 4075
$Comp
L Device:R R1
U 1 1 5E4CC157
P 3650 3725
F 0 "R1" H 3720 3771 50  0000 L CNN
F 1 "R220" H 3720 3680 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 3580 3725 50  0001 C CNN
F 3 "~" H 3650 3725 50  0001 C CNN
	1    3650 3725
	1    0    0    -1  
$EndComp
$Comp
L Device:R R2
U 1 1 5E4CC1AE
P 3650 4350
F 0 "R2" H 3720 4396 50  0000 L CNN
F 1 "R2.2" H 3720 4305 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 3580 4350 50  0001 C CNN
F 3 "~" H 3650 4350 50  0001 C CNN
	1    3650 4350
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 4200 3650 4075
Connection ~ 3650 4075
Wire Wire Line
	3650 4075 3650 3875
Wire Wire Line
	3650 3575 3650 3450
$Comp
L power:GND #PWR0102
U 1 1 5E4CC495
P 3250 3750
F 0 "#PWR0102" H 3250 3500 50  0001 C CNN
F 1 "GND" H 3255 3577 50  0000 C CNN
F 2 "" H 3250 3750 50  0001 C CNN
F 3 "" H 3250 3750 50  0001 C CNN
	1    3250 3750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0103
U 1 1 5E4CC570
P 3650 4500
F 0 "#PWR0103" H 3650 4250 50  0001 C CNN
F 1 "GND" H 3655 4327 50  0000 C CNN
F 2 "" H 3650 4500 50  0001 C CNN
F 3 "" H 3650 4500 50  0001 C CNN
	1    3650 4500
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C3
U 1 1 5E4CC659
P 3400 2950
F 0 "C3" V 3655 2950 50  0000 C CNN
F 1 "0.2uf" V 3564 2950 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 3438 2800 50  0001 C CNN
F 3 "~" H 3400 2950 50  0001 C CNN
	1    3400 2950
	0    -1   -1   0   
$EndComp
$Comp
L power:+12V #PWR0104
U 1 1 5E4CC70B
P 3250 2550
F 0 "#PWR0104" H 3250 2400 50  0001 C CNN
F 1 "+12V" H 3265 2723 50  0000 C CNN
F 2 "" H 3250 2550 50  0001 C CNN
F 3 "" H 3250 2550 50  0001 C CNN
	1    3250 2550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3250 2550 3250 2950
Connection ~ 3250 2950
Wire Wire Line
	3250 2950 3250 3150
$Comp
L power:GND #PWR0105
U 1 1 5E4CC7DD
P 3550 2950
F 0 "#PWR0105" H 3550 2700 50  0001 C CNN
F 1 "GND" H 3555 2777 50  0000 C CNN
F 2 "" H 3550 2950 50  0001 C CNN
F 3 "" H 3550 2950 50  0001 C CNN
	1    3550 2950
	1    0    0    -1  
$EndComp
Text Notes 3550 2100 0    50   ~ 0
V+ can be\n+5 to 20V
$Comp
L power:GND #PWR0106
U 1 1 5E4CCBDF
P 7475 4200
F 0 "#PWR0106" H 7475 3950 50  0001 C CNN
F 1 "GND" H 7480 4027 50  0000 C CNN
F 2 "" H 7475 4200 50  0001 C CNN
F 3 "" H 7475 4200 50  0001 C CNN
	1    7475 4200
	-1   0    0    -1  
$EndComp
$Comp
L Device:CP C10
U 1 1 5E4CCBE5
P 7475 3750
F 0 "C10" H 7357 3796 50  0000 R CNN
F 1 "100uf" H 7357 3705 50  0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 7475 3750 50  0001 C CNN
F 3 "~" H 7475 3750 50  0001 C CNN
	1    7475 3750
	-1   0    0    -1  
$EndComp
$Comp
L pspice:OPAMP U2
U 1 1 5E4CCBED
P 6450 3400
F 0 "U2" H 6775 3575 50  0000 L CNN
F 1 "LM383" H 6775 3250 50  0000 L CNN
F 2 "Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical" H 6450 3400 50  0001 C CNN
F 3 "~" H 6450 3400 50  0001 C CNN
	1    6450 3400
	-1   0    0    -1  
$EndComp
$Comp
L Device:CP C9
U 1 1 5E4CCBF3
P 6925 3875
F 0 "C9" H 7043 3921 50  0000 L CNN
F 1 "470uf" H 7043 3830 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 6963 3725 50  0001 C CNN
F 3 "~" H 6925 3875 50  0001 C CNN
	1    6925 3875
	-1   0    0    -1  
$EndComp
Wire Wire Line
	6750 3500 6925 3500
Wire Wire Line
	6925 3500 6925 3725
Wire Wire Line
	6925 4025 6150 4025
$Comp
L Device:R R4
U 1 1 5E4CCBFC
P 6150 3675
F 0 "R4" H 6220 3721 50  0000 L CNN
F 1 "R220" H 6220 3630 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 6080 3675 50  0001 C CNN
F 3 "~" H 6150 3675 50  0001 C CNN
	1    6150 3675
	-1   0    0    -1  
$EndComp
$Comp
L Device:R R5
U 1 1 5E4CCC02
P 6150 4300
F 0 "R5" H 6220 4346 50  0000 L CNN
F 1 "R2.2" H 6220 4255 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 6080 4300 50  0001 C CNN
F 3 "~" H 6150 4300 50  0001 C CNN
	1    6150 4300
	-1   0    0    -1  
$EndComp
Wire Wire Line
	6150 4150 6150 4050
Connection ~ 6150 4025
Wire Wire Line
	6150 4025 6150 3825
Wire Wire Line
	6150 3525 6150 3450
$Comp
L power:GND #PWR0107
U 1 1 5E4CCC0C
P 6550 3700
F 0 "#PWR0107" H 6550 3450 50  0001 C CNN
F 1 "GND" H 6555 3527 50  0000 C CNN
F 2 "" H 6550 3700 50  0001 C CNN
F 3 "" H 6550 3700 50  0001 C CNN
	1    6550 3700
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR0108
U 1 1 5E4CCC12
P 6150 4450
F 0 "#PWR0108" H 6150 4200 50  0001 C CNN
F 1 "GND" H 6155 4277 50  0000 C CNN
F 2 "" H 6150 4450 50  0001 C CNN
F 3 "" H 6150 4450 50  0001 C CNN
	1    6150 4450
	-1   0    0    -1  
$EndComp
$Comp
L Device:CP C8
U 1 1 5E4CCC18
P 6400 2900
F 0 "C8" V 6655 2900 50  0000 C CNN
F 1 "0.2uf" V 6564 2900 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 6438 2750 50  0001 C CNN
F 3 "~" H 6400 2900 50  0001 C CNN
	1    6400 2900
	0    1    -1   0   
$EndComp
$Comp
L power:+12V #PWR0109
U 1 1 5E4CCC1E
P 6550 2500
F 0 "#PWR0109" H 6550 2350 50  0001 C CNN
F 1 "+12V" H 6565 2673 50  0000 C CNN
F 2 "" H 6550 2500 50  0001 C CNN
F 3 "" H 6550 2500 50  0001 C CNN
	1    6550 2500
	-1   0    0    -1  
$EndComp
Wire Wire Line
	6550 2500 6550 2775
Connection ~ 6550 2900
Wire Wire Line
	6550 2900 6550 3100
$Comp
L power:GND #PWR0110
U 1 1 5E4CCC27
P 6250 2900
F 0 "#PWR0110" H 6250 2650 50  0001 C CNN
F 1 "GND" H 6255 2727 50  0000 C CNN
F 2 "" H 6250 2900 50  0001 C CNN
F 3 "" H 6250 2900 50  0001 C CNN
	1    6250 2900
	-1   0    0    -1  
$EndComp
Text Notes 4950 2500 0    50   ~ 0
Additional\nOutput Caps\nare used to\nblock auto DC\nnoise.
Wire Wire Line
	7475 3300 7475 3600
Wire Wire Line
	7475 3900 7475 4200
Wire Wire Line
	6750 3300 7475 3300
$Comp
L Device:R R6
U 1 1 5E4CE830
P 7100 2775
F 0 "R6" V 6893 2775 50  0000 C CNN
F 1 "R1M" V 6984 2775 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 7030 2775 50  0001 C CNN
F 3 "~" H 7100 2775 50  0001 C CNN
	1    7100 2775
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT RV1
U 1 1 5E4CEB50
P 7825 2975
F 0 "RV1" H 7755 3021 50  0000 R CNN
F 1 "R_POT" H 7755 2930 50  0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_PTV09A-2_Single_Horizontal" H 7825 2975 50  0001 C CNN
F 3 "~" H 7825 2975 50  0001 C CNN
	1    7825 2975
	-1   0    0    -1  
$EndComp
Wire Wire Line
	7250 2775 7825 2775
Wire Wire Line
	7825 2775 7825 2825
$Comp
L power:GND #PWR0111
U 1 1 5E4CF924
P 7825 3125
F 0 "#PWR0111" H 7825 2875 50  0001 C CNN
F 1 "GND" H 7830 2952 50  0000 C CNN
F 2 "" H 7825 3125 50  0001 C CNN
F 3 "" H 7825 3125 50  0001 C CNN
	1    7825 3125
	1    0    0    -1  
$EndComp
Wire Wire Line
	7675 2975 7475 2975
Wire Wire Line
	7475 2975 7475 3300
Connection ~ 7475 3300
Wire Wire Line
	6950 2775 6550 2775
Connection ~ 6550 2775
Wire Wire Line
	6550 2775 6550 2900
Text Notes 7975 2600 0    50   ~ 0
Volume\nCTRL\n(logarithmic type\npot)
$Comp
L Connector:Barrel_Jack J2
U 1 1 5E4D048A
P 4950 3150
F 0 "J2" V 4959 2970 50  0000 R CNN
F 1 "Barrel_Jack" V 4600 3025 50  0000 R CNN
F 2 "Connector_BarrelJack:BarrelJack_Horizontal" H 5000 3110 50  0001 C CNN
F 3 "~" H 5000 3110 50  0001 C CNN
	1    4950 3150
	0    -1   1    0   
$EndComp
Text Notes 4275 2700 0    50   ~ 0
Barrel Plug\nIs Speaker\n(or just solder\nwire direct)
$Comp
L Device:CP C5
U 1 1 5E4D0BE3
P 4600 3450
F 0 "C5" V 4855 3450 50  0000 C CNN
F 1 "100uf" V 4764 3450 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 4638 3300 50  0001 C CNN
F 3 "~" H 4600 3450 50  0001 C CNN
	1    4600 3450
	0    -1   -1   0   
$EndComp
$Comp
L Device:CP C6
U 1 1 5E4D0C8A
P 5300 3450
F 0 "C6" V 5045 3450 50  0000 C CNN
F 1 "100uf" V 5136 3450 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 5338 3300 50  0001 C CNN
F 3 "~" H 5300 3450 50  0001 C CNN
	1    5300 3450
	0    1    1    0   
$EndComp
Wire Wire Line
	5150 3450 5050 3450
Wire Wire Line
	4850 3450 4750 3450
$Comp
L Device:CP C4
U 1 1 5E4D137E
P 4325 3600
F 0 "C4" H 4443 3646 50  0000 L CNN
F 1 "0.2uf" H 4443 3555 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 4363 3450 50  0001 C CNN
F 3 "~" H 4325 3600 50  0001 C CNN
	1    4325 3600
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C7
U 1 1 5E4D1407
P 5575 3600
F 0 "C7" H 5693 3646 50  0000 L CNN
F 1 "0.2uf" H 5693 3555 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 5613 3450 50  0001 C CNN
F 3 "~" H 5575 3600 50  0001 C CNN
	1    5575 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4450 3450 4325 3450
Wire Wire Line
	5450 3450 5575 3450
$Comp
L power:GND #PWR0112
U 1 1 5E4D2210
P 4325 3750
F 0 "#PWR0112" H 4325 3500 50  0001 C CNN
F 1 "GND" H 4330 3577 50  0000 C CNN
F 2 "" H 4325 3750 50  0001 C CNN
F 3 "" H 4325 3750 50  0001 C CNN
	1    4325 3750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0113
U 1 1 5E4D226E
P 5575 3750
F 0 "#PWR0113" H 5575 3500 50  0001 C CNN
F 1 "GND" H 5580 3577 50  0000 C CNN
F 2 "" H 5575 3750 50  0001 C CNN
F 3 "" H 5575 3750 50  0001 C CNN
	1    5575 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	4325 3450 4000 3450
Connection ~ 4325 3450
Connection ~ 3650 3450
$Comp
L Device:R R3
U 1 1 5E4D2CE3
P 4775 4050
F 0 "R3" V 4568 4050 50  0000 C CNN
F 1 "R220" V 4659 4050 50  0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 4705 4050 50  0001 C CNN
F 3 "~" H 4775 4050 50  0001 C CNN
	1    4775 4050
	0    1    1    0   
$EndComp
Wire Wire Line
	4625 4050 4000 4050
Wire Wire Line
	4000 4050 4000 3450
Connection ~ 4000 3450
Wire Wire Line
	4000 3450 3650 3450
Text Notes 3800 1250 0    150  ~ 0
16 Watt Amplifier
Wire Wire Line
	5575 3450 6150 3450
Connection ~ 5575 3450
Connection ~ 6150 3450
Wire Wire Line
	6150 3450 6150 3400
Text Label 3775 3450 0    50   ~ 0
OP1OUT
Text Label 5800 3450 0    50   ~ 0
OP2OUT
Text Label 7225 3300 0    50   ~ 0
OP2NONINV
Text Label 6850 3500 0    50   ~ 0
OP2INV
Text Label 3050 3350 1    50   ~ 0
OP1NONINV
Text Label 2875 3750 2    50   ~ 0
OP1INV
Text Label 2650 3350 0    50   ~ 0
INPUT
Text Label 4750 3450 0    50   ~ 0
SPKOUT1
Text Label 5125 3450 0    50   ~ 0
SPKOUT2
Wire Wire Line
	4925 4050 6150 4050
Connection ~ 6150 4050
Wire Wire Line
	6150 4050 6150 4025
Text Label 7400 2775 0    50   ~ 0
VOLPOT
$Comp
L Connector:Barrel_Jack J3
U 1 1 5E4D7487
P 6150 1650
F 0 "J3" H 6205 1975 50  0000 C CNN
F 1 "Barrel_Jack" H 6205 1884 50  0000 C CNN
F 2 "Connector_BarrelJack:BarrelJack_Horizontal" H 6200 1610 50  0001 C CNN
F 3 "~" H 6200 1610 50  0001 C CNN
	1    6150 1650
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR0114
U 1 1 5E4D762B
P 6450 1550
F 0 "#PWR0114" H 6450 1400 50  0001 C CNN
F 1 "+12V" H 6465 1723 50  0000 C CNN
F 2 "" H 6450 1550 50  0001 C CNN
F 3 "" H 6450 1550 50  0001 C CNN
	1    6450 1550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 5E4D7696
P 6450 1750
F 0 "#PWR0115" H 6450 1500 50  0001 C CNN
F 1 "GND" H 6455 1577 50  0000 C CNN
F 2 "" H 6450 1750 50  0001 C CNN
F 3 "" H 6450 1750 50  0001 C CNN
	1    6450 1750
	1    0    0    -1  
$EndComp
$EndSCHEMATC