EESchema Schematic File Version 4
LIBS:mixer-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 3
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:Opamp_Dual_Generic U?
U 1 1 5C0923EF
P 2600 3000
F 0 "U?" H 2650 3150 50  0000 C CNN
F 1 "Opamp_Dual_Generic" H 2700 3250 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2600 3000 50  0001 C CNN
F 3 "~" H 2600 3000 50  0001 C CNN
	1    2600 3000
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U?
U 2 1 5C0923F6
P 2600 4250
F 0 "U?" H 2700 4400 50  0000 C CNN
F 1 "Opamp_Dual_Generic" H 2700 4500 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2600 4250 50  0001 C CNN
F 3 "~" H 2600 4250 50  0001 C CNN
	2    2600 4250
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U?
U 3 1 5C0923FD
P 2750 1300
F 0 "U?" H 2708 1346 50  0000 L CNN
F 1 "Opamp_Dual_Generic" H 2708 1255 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2750 1300 50  0001 C CNN
F 3 "~" H 2750 1300 50  0001 C CNN
	3    2750 1300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5C092405
P 2600 2550
F 0 "R?" V 2400 2550 50  0000 C CNN
F 1 "10k" V 2500 2550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2530 2550 50  0001 C CNN
F 3 "~" H 2600 2550 50  0001 C CNN
F 4 "Metallfilm" V 2600 2550 50  0001 C CNN "Notes"
	1    2600 2550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2900 3000 2900 2550
Wire Wire Line
	2900 2550 2750 2550
Wire Wire Line
	2450 2550 2300 2550
Wire Wire Line
	2300 2550 2300 2900
$Comp
L power:GNDA #PWR?
U 1 1 5C092417
P 2200 3150
F 0 "#PWR?" H 2200 2900 50  0001 C CNN
F 1 "GNDA" H 2205 2977 50  0000 C CNN
F 2 "" H 2200 3150 50  0001 C CNN
F 3 "" H 2200 3150 50  0001 C CNN
	1    2200 3150
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5C09241D
P 2600 2300
F 0 "C?" V 2348 2300 50  0000 C CNN
F 1 "330p" V 2439 2300 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 2638 2150 50  0001 C CNN
F 3 "~" H 2600 2300 50  0001 C CNN
	1    2600 2300
	0    1    1    0   
$EndComp
Wire Wire Line
	2750 2300 2900 2300
Wire Wire Line
	2900 2300 2900 2550
Connection ~ 2900 2550
Wire Wire Line
	2450 2300 2300 2300
Wire Wire Line
	2300 2300 2300 2550
Connection ~ 2300 2550
Text Notes 2750 2300 0    50   ~ 0
Lowpass:\nf_c =    1 /\n     (2 * Pi * R * C)
Connection ~ 2300 2900
$Comp
L Device:C CU2+?
U 1 1 5C09243A
P 2400 1150
F 0 "CU2+?" H 2515 1196 50  0000 L CNN
F 1 "100n" H 2515 1105 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 2438 1000 50  0001 C CNN
F 3 "~" H 2400 1150 50  0001 C CNN
	1    2400 1150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR?
U 1 1 5C092441
P 2250 1300
F 0 "#PWR?" H 2250 1050 50  0001 C CNN
F 1 "GNDA" H 2255 1127 50  0000 C CNN
F 2 "" H 2250 1300 50  0001 C CNN
F 3 "" H 2250 1300 50  0001 C CNN
	1    2250 1300
	1    0    0    -1  
$EndComp
$Comp
L Device:C CU2-?
U 1 1 5C092447
P 2400 1450
F 0 "CU2-?" H 2515 1496 50  0000 L CNN
F 1 "100n" H 2515 1405 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 2438 1300 50  0001 C CNN
F 3 "~" H 2400 1450 50  0001 C CNN
	1    2400 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2400 1300 2250 1300
Connection ~ 2400 1300
Wire Wire Line
	2650 1000 2400 1000
Wire Wire Line
	2650 1600 2400 1600
$Comp
L power:GNDA #PWR?
U 1 1 5C092452
P 2200 4400
F 0 "#PWR?" H 2200 4150 50  0001 C CNN
F 1 "GNDA" H 2205 4227 50  0000 C CNN
F 2 "" H 2200 4400 50  0001 C CNN
F 3 "" H 2200 4400 50  0001 C CNN
	1    2200 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5C092460
P 2600 3800
F 0 "R?" V 2400 3800 50  0000 C CNN
F 1 "10k" V 2500 3800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2530 3800 50  0001 C CNN
F 3 "~" H 2600 3800 50  0001 C CNN
F 4 "Metallfilm" V 2600 3800 50  0001 C CNN "Notes"
	1    2600 3800
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C?
U 1 1 5C092467
P 2600 3600
F 0 "C?" V 2348 3600 50  0000 C CNN
F 1 "330p" V 2439 3600 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 2638 3450 50  0001 C CNN
F 3 "~" H 2600 3600 50  0001 C CNN
	1    2600 3600
	0    1    1    0   
$EndComp
Wire Wire Line
	2300 3600 2300 3800
Connection ~ 2300 4150
Wire Wire Line
	2750 3800 2900 3800
Wire Wire Line
	2900 3800 2900 4250
Wire Wire Line
	2900 3600 2900 3800
Connection ~ 2900 3800
Wire Wire Line
	2450 3800 2300 3800
Connection ~ 2300 3800
Wire Wire Line
	2300 3800 2300 4150
$Comp
L Device:R R?
U 1 1 5C092486
P 3150 4250
F 0 "R?" V 3357 4250 50  0000 C CNN
F 1 "220" V 3266 4250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3080 4250 50  0001 C CNN
F 3 "~" H 3150 4250 50  0001 C CNN
F 4 "Metallfilm" V 3150 4250 50  0001 C CNN "Notes"
	1    3150 4250
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5C09248E
P 3150 3000
F 0 "R?" V 3357 3000 50  0000 C CNN
F 1 "220" V 3266 3000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3080 3000 50  0001 C CNN
F 3 "~" H 3150 3000 50  0001 C CNN
F 4 "Metallfilm" V 3150 3000 50  0001 C CNN "Notes"
	1    3150 3000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3000 4250 2900 4250
Connection ~ 2900 4250
Wire Wire Line
	2900 3000 3000 3000
Connection ~ 2900 3000
Wire Wire Line
	2200 4400 2200 4350
Wire Wire Line
	2200 4350 2300 4350
Wire Wire Line
	1900 4150 2300 4150
Wire Wire Line
	1900 2900 2300 2900
Wire Wire Line
	2300 3600 2450 3600
Wire Wire Line
	2750 3600 2900 3600
Wire Wire Line
	2200 3150 2200 3100
Wire Wire Line
	2200 3100 2300 3100
$Comp
L power:-15V #PWR?
U 1 1 5C0924A3
P 2650 1600
F 0 "#PWR?" H 2650 1700 50  0001 C CNN
F 1 "-15V" H 2665 1773 50  0000 C CNN
F 2 "" H 2650 1600 50  0001 C CNN
F 3 "" H 2650 1600 50  0001 C CNN
	1    2650 1600
	-1   0    0    1   
$EndComp
Connection ~ 2650 1600
$Comp
L power:+15V #PWR?
U 1 1 5C0924AA
P 2650 1000
F 0 "#PWR?" H 2650 850 50  0001 C CNN
F 1 "+15V" H 2665 1173 50  0000 C CNN
F 2 "" H 2650 1000 50  0001 C CNN
F 3 "" H 2650 1000 50  0001 C CNN
	1    2650 1000
	1    0    0    -1  
$EndComp
Connection ~ 2650 1000
Text HLabel 1900 2900 0    50   Input ~ 0
inA
Text HLabel 1900 4150 0    50   Input ~ 0
inB
Text HLabel 3450 3000 2    50   Output ~ 0
outA
Text HLabel 3450 4250 2    50   Output ~ 0
outB
Wire Wire Line
	3300 4250 3450 4250
Wire Wire Line
	3300 3000 3450 3000
$EndSCHEMATC