Bat_detector.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Bat Detector"
Date "2020-06-05"
Rev "1.0"
Comp "Marcel Meyer Garcia"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L 4xxx:4066 U3
U 1 1 5EDA0106
P 4700 1900
F 0 "U3" H 4700 1725 50  0000 C CNN
F 1 "4066" H 4700 1632 50  0000 C CNN
F 2 "" H 4700 1900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4700 1900 50  0001 C CNN
	1    4700 1900
	1    0    0    -1  
$EndComp
$Comp
L 4xxx:4066 U3
U 2 1 5EDA09C4
P 4700 2850
F 0 "U3" H 4700 2675 50  0000 C CNN
F 1 "4066" H 4700 2582 50  0000 C CNN
F 2 "" H 4700 2850 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4700 2850 50  0001 C CNN
	2    4700 2850
	1    0    0    -1  
$EndComp
$Comp
L 4xxx:4066 U3
U 3 1 5EDA105D
P 7300 4850
F 0 "U3" V 7347 4721 50  0000 R CNN
F 1 "4066" V 7254 4721 50  0000 R CNN
F 2 "" H 7300 4850 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7300 4850 50  0001 C CNN
	3    7300 4850
	0    -1   -1   0   
$EndComp
$Comp
L 4xxx:4066 U3
U 4 1 5EDA188A
P 4150 5000
F 0 "U3" V 4197 4871 50  0000 R CNN
F 1 "4066" V 4104 4871 50  0000 R CNN
F 2 "" H 4150 5000 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4150 5000 50  0001 C CNN
	4    4150 5000
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C1
U 1 1 5EDA2176
P 1800 2200
F 0 "C1" V 1545 2200 50  0000 C CNN
F 1 "22n" V 1638 2200 50  0000 C CNN
F 2 "" H 1838 2050 50  0001 C CNN
F 3 "~" H 1800 2200 50  0001 C CNN
	1    1800 2200
	0    1    1    0   
$EndComp
Text GLabel 1500 2200 0    50   Input ~ 0
IN
Wire Wire Line
	1500 2200 1650 2200
$Comp
L Device:L L1
U 1 1 5EDA8472
P 2050 2350
F 0 "L1" H 2005 2303 50  0000 R CNN
F 1 "3.3m" H 2005 2396 50  0000 R CNN
F 2 "" H 2050 2350 50  0001 C CNN
F 3 "~" H 2050 2350 50  0001 C CNN
	1    2050 2350
	1    0    0    1   
$EndComp
$Comp
L Device:R R1
U 1 1 5EDA8B9F
P 2250 2350
F 0 "R1" H 2320 2397 50  0000 L CNN
F 1 "220" H 2320 2304 50  0000 L CNN
F 2 "" V 2180 2350 50  0001 C CNN
F 3 "~" H 2250 2350 50  0001 C CNN
	1    2250 2350
	1    0    0    -1  
$EndComp
Text GLabel 2050 2550 3    50   BiDi ~ 0
VGND
Wire Wire Line
	2050 2500 2050 2550
Wire Wire Line
	2250 2500 2050 2500
Connection ~ 2050 2500
Wire Wire Line
	2050 2200 1950 2200
Wire Wire Line
	2050 2200 2250 2200
Connection ~ 2050 2200
$Comp
L Device:R R2
U 1 1 5EDC1316
P 3200 2750
F 0 "R2" V 2990 2750 50  0000 C CNN
F 1 "100" V 3083 2750 50  0000 C CNN
F 2 "" V 3130 2750 50  0001 C CNN
F 3 "~" H 3200 2750 50  0001 C CNN
	1    3200 2750
	0    1    1    0   
$EndComp
$Comp
L Device:R R5
U 1 1 5EDC594C
P 3750 2500
F 0 "R5" V 3540 2500 50  0000 C CNN
F 1 "100" V 3633 2500 50  0000 C CNN
F 2 "" V 3680 2500 50  0001 C CNN
F 3 "~" H 3750 2500 50  0001 C CNN
	1    3750 2500
	0    1    1    0   
$EndComp
Wire Wire Line
	3600 2500 3400 2500
Wire Wire Line
	3400 2500 3400 2750
Wire Wire Line
	3400 2750 3450 2750
Wire Wire Line
	3350 2750 3400 2750
Connection ~ 3400 2750
Wire Wire Line
	3900 2500 4050 2500
Wire Wire Line
	4050 2500 4050 2850
Text GLabel 3350 2950 0    50   BiDi ~ 0
VGND
Wire Wire Line
	3350 2950 3450 2950
Wire Wire Line
	2250 2200 2750 2200
Wire Wire Line
	2750 2200 2750 2750
Wire Wire Line
	2750 2750 3050 2750
Connection ~ 2250 2200
$Comp
L Timer:LMC555xN U1
U 1 1 5EDEB7DE
P 2300 4500
F 0 "U1" H 1950 4950 50  0000 C CNN
F 1 "ILC555" H 2000 4850 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2950 4100 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lmc555.pdf" H 3150 4100 50  0001 C CNN
	1    2300 4500
	1    0    0    -1  
$EndComp
Text Notes 1600 1750 0    50   ~ 0
25kHz 2nd order\nhigh-pass filter
Wire Wire Line
	4050 2850 4400 2850
Wire Notes Line
	3000 2250 4150 2250
Wire Notes Line
	4150 2250 4150 3150
Wire Notes Line
	4150 3150 3000 3150
Wire Notes Line
	3000 3150 3000 2250
Text Notes 3000 3250 0    50   ~ 0
inverting stage, unity gain
$Comp
L Device:C C2
U 1 1 5EE0EBD0
P 2900 4950
F 0 "C2" H 3015 4997 50  0000 L CNN
F 1 "10n" H 3015 4904 50  0000 L CNN
F 2 "" H 2938 4800 50  0001 C CNN
F 3 "~" H 2900 4950 50  0001 C CNN
	1    2900 4950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR02
U 1 1 5EE131C8
P 2300 5100
F 0 "#PWR02" H 2300 4850 50  0001 C CNN
F 1 "GND" H 2305 4925 50  0000 C CNN
F 2 "" H 2300 5100 50  0001 C CNN
F 3 "" H 2300 5100 50  0001 C CNN
	1    2300 5100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 4900 2300 5100
Wire Wire Line
	2300 5100 2900 5100
Connection ~ 2300 5100
Wire Wire Line
	2800 4700 2900 4700
Wire Wire Line
	2900 4700 2900 4800
$Comp
L power:VCC #PWR01
U 1 1 5EE16023
P 2300 4000
F 0 "#PWR01" H 2300 3850 50  0001 C CNN
F 1 "VCC" H 2315 4175 50  0000 C CNN
F 2 "" H 2300 4000 50  0001 C CNN
F 3 "" H 2300 4000 50  0001 C CNN
	1    2300 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 4000 2300 4100
Wire Wire Line
	1800 4300 1800 3750
Wire Wire Line
	1800 3750 2900 3750
Wire Wire Line
	2900 3750 2900 4700
Connection ~ 2900 4700
$Comp
L Device:R R4
U 1 1 5EE19A34
P 3200 4650
F 0 "R4" H 3270 4697 50  0000 L CNN
F 1 "100" H 3270 4604 50  0000 L CNN
F 2 "" V 3130 4650 50  0001 C CNN
F 3 "~" H 3200 4650 50  0001 C CNN
	1    3200 4650
	1    0    0    -1  
$EndComp
Wire Wire Line
	1700 4700 1800 4700
Wire Wire Line
	1700 5350 3200 5350
Wire Wire Line
	3200 4500 2800 4500
Wire Wire Line
	3200 4800 3200 5350
Wire Wire Line
	1700 4700 1700 5350
Connection ~ 1700 4700
NoConn ~ 1800 4500
$Comp
L Device:R_POT P1
U 1 1 5EE20BCD
P 3200 3750
F 0 "P1" H 3131 3703 50  0000 R CNN
F 1 "2k2" H 3131 3796 50  0000 R CNN
F 2 "" H 3200 3750 50  0001 C CNN
F 3 "~" H 3200 3750 50  0001 C CNN
	1    3200 3750
	-1   0    0    1   
$EndComp
Wire Wire Line
	2900 3750 3050 3750
Connection ~ 2900 3750
NoConn ~ 3200 3600
Wire Wire Line
	2300 4000 1700 4000
Wire Wire Line
	1700 4000 1700 4700
Connection ~ 2300 4000
Wire Notes Line
	1600 3500 3500 3500
Wire Notes Line
	3500 3500 3500 5550
Wire Notes Line
	3500 5550 1600 5550
Wire Notes Line
	1600 5550 1600 3500
Text Notes 1600 5650 0    50   ~ 0
local oscillator (LO)  approx. 21kHz ... 400kHz
Wire Wire Line
	2800 4300 3050 4300
Wire Wire Line
	3050 4300 3050 4050
Wire Wire Line
	3050 4050 3850 4050
Text GLabel 4550 4050 2    50   Output ~ 0
LO
Connection ~ 3850 4050
Wire Wire Line
	3850 4050 4550 4050
$Comp
L power:GND #PWR04
U 1 1 5EE5E33A
P 4150 5350
F 0 "#PWR04" H 4150 5100 50  0001 C CNN
F 1 "GND" H 4155 5175 50  0000 C CNN
F 2 "" H 4150 5350 50  0001 C CNN
F 3 "" H 4150 5350 50  0001 C CNN
	1    4150 5350
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR03
U 1 1 5EE5E80A
P 4150 4350
F 0 "#PWR03" H 4150 4200 50  0001 C CNN
F 1 "VCC" H 4250 4450 50  0000 C CNN
F 2 "" H 4150 4350 50  0001 C CNN
F 3 "" H 4150 4350 50  0001 C CNN
	1    4150 4350
	1    0    0    -1  
$EndComp
$Comp
L Device:R R6
U 1 1 5EE5EE51
P 4150 4550
F 0 "R6" H 4220 4597 50  0000 L CNN
F 1 "10k" H 4220 4504 50  0000 L CNN
F 2 "" V 4080 4550 50  0001 C CNN
F 3 "~" H 4150 4550 50  0001 C CNN
	1    4150 4550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 4050 3850 5000
Connection ~ 4150 4700
Wire Wire Line
	4150 4700 4550 4700
Wire Wire Line
	4150 4350 4150 4400
Wire Wire Line
	4150 5300 4150 5350
Text GLabel 4550 4700 2    50   Output ~ 0
~LO
Wire Notes Line
	3900 4150 4500 4150
Wire Notes Line
	4500 4150 4500 5600
Wire Notes Line
	4500 5600 3900 5600
Wire Notes Line
	3900 5600 3900 4150
Text Notes 3900 5700 0    50   ~ 0
digital inverter
$Comp
L power:GND #PWR07
U 1 1 5EE84E77
P 7000 5200
F 0 "#PWR07" H 7000 4950 50  0001 C CNN
F 1 "GND" H 7005 5025 50  0000 C CNN
F 2 "" H 7000 5200 50  0001 C CNN
F 3 "" H 7000 5200 50  0001 C CNN
	1    7000 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	7000 4850 7000 5150
Wire Wire Line
	7300 5150 7000 5150
Connection ~ 7000 5150
Wire Wire Line
	7000 5150 7000 5200
NoConn ~ 7300 4550
Wire Notes Line
	6900 4500 7650 4500
Wire Notes Line
	7650 4500 7650 5450
Wire Notes Line
	7650 5450 6900 5450
Wire Notes Line
	6900 5450 6900 4500
Text Notes 6900 5550 0    50   ~ 0
unused
Text GLabel 4700 1550 1    50   Input ~ 0
LO
Wire Wire Line
	4700 1550 4700 1600
Text GLabel 4700 2500 1    50   Input ~ 0
~LO
Wire Wire Line
	4700 2500 4700 2550
Wire Wire Line
	5000 1900 5050 1900
Wire Wire Line
	5050 2850 5000 2850
Wire Notes Line
	4350 1350 5200 1350
Wire Notes Line
	5200 1350 5200 3200
Wire Notes Line
	5200 3200 4350 3200
Wire Notes Line
	4350 3200 4350 1350
Text Notes 4350 3300 0    50   ~ 0
balanced mixer
$Comp
L Device:C C3
U 1 1 5EEB9013
P 6650 2600
F 0 "C3" H 6765 2647 50  0000 L CNN
F 1 "100n" H 6765 2554 50  0000 L CNN
F 2 "" H 6688 2450 50  0001 C CNN
F 3 "~" H 6650 2600 50  0001 C CNN
	1    6650 2600
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:MCP6004 U2
U 1 1 5EECC3E3
P 3750 2850
F 0 "U2" H 3900 3000 50  0000 C CNN
F 1 "MCP6004" H 3850 3100 50  0000 C CNN
F 2 "" H 3700 2950 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 3800 3050 50  0001 C CNN
	1    3750 2850
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:MCP6004 U2
U 2 1 5EECD368
P 3750 1900
F 0 "U2" H 3650 1600 50  0000 C CNN
F 1 "MCP6004" H 3800 1700 50  0000 C CNN
F 2 "" H 3700 2000 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 3800 2100 50  0001 C CNN
	2    3750 1900
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:MCP6004 U2
U 3 1 5EED068D
P 5900 2350
F 0 "U2" H 5900 1980 50  0000 C CNN
F 1 "MCP6004" H 5900 2073 50  0000 C CNN
F 2 "" H 5850 2450 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 5950 2550 50  0001 C CNN
	3    5900 2350
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:MCP6004 U2
U 4 1 5EED1AB0
P 7600 2450
F 0 "U2" H 7600 2820 50  0000 C CNN
F 1 "MCP6004" H 7600 2727 50  0000 C CNN
F 2 "" H 7550 2550 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 7650 2650 50  0001 C CNN
	4    7600 2450
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:MCP6004 U2
U 5 1 5EED4B98
P 9800 4900
F 0 "U2" H 9759 4947 50  0000 L CNN
F 1 "MCP6004" H 9759 4854 50  0000 L CNN
F 2 "" H 9750 5000 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 9850 5100 50  0001 C CNN
	5    9800 4900
	1    0    0    -1  
$EndComp
Connection ~ 4050 2850
Wire Wire Line
	4050 1900 4400 1900
Wire Wire Line
	3450 1800 3350 1800
Wire Wire Line
	3350 1800 3350 1500
Wire Wire Line
	3350 1500 4050 1500
Wire Wire Line
	4050 1500 4050 1900
Connection ~ 4050 1900
Wire Wire Line
	2750 2000 2750 2200
Wire Wire Line
	2750 2000 3450 2000
Connection ~ 2750 2200
Wire Notes Line
	4150 1350 4150 2150
Wire Notes Line
	4150 2150 3000 2150
Wire Notes Line
	3000 2150 3000 1350
Wire Notes Line
	3000 1350 4150 1350
Text Notes 3000 1300 0    50   ~ 0
unity gain buffer stage
Text GLabel 6650 2850 3    50   BiDi ~ 0
VGND
Wire Wire Line
	6650 2750 6650 2850
Wire Wire Line
	6650 2350 6650 2450
Wire Wire Line
	5050 1900 5050 2450
Wire Wire Line
	5600 2450 5050 2450
Connection ~ 5050 2450
Wire Wire Line
	5050 2450 5050 2850
Wire Wire Line
	5600 2250 5550 2250
Wire Wire Line
	5550 2250 5550 1850
Wire Wire Line
	5550 1850 6200 1850
Wire Wire Line
	6200 1850 6200 2350
$Comp
L Device:R R7
U 1 1 5EF6C19B
P 6450 2350
F 0 "R7" V 6240 2350 50  0000 C CNN
F 1 "220" V 6333 2350 50  0000 C CNN
F 2 "" V 6380 2350 50  0001 C CNN
F 3 "~" H 6450 2350 50  0001 C CNN
	1    6450 2350
	0    1    1    0   
$EndComp
Wire Wire Line
	6600 2350 6650 2350
Wire Wire Line
	6300 2350 6200 2350
Connection ~ 6200 2350
Wire Notes Line
	5450 1750 7000 1750
Wire Notes Line
	7000 1750 7000 3200
Wire Notes Line
	7000 3200 5450 3200
Wire Notes Line
	5450 3200 5450 1750
Text Notes 5450 3300 0    50   ~ 0
unity gain buffer + 7kHz low-pass filter
$Comp
L Connector:Conn_01x04_Female J1
U 1 1 5EF8D6A8
P 5550 5050
F 0 "J1" H 5442 4621 50  0000 C CNN
F 1 "~" H 5250 5550 50  0000 C CNN
F 2 "" H 5550 5050 50  0001 C CNN
F 3 "~" H 5550 5050 50  0001 C CNN
	1    5550 5050
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5EF91AB4
P 5850 5200
F 0 "#PWR05" H 5850 4950 50  0001 C CNN
F 1 "GND" H 5855 5025 50  0000 C CNN
F 2 "" H 5850 5200 50  0001 C CNN
F 3 "" H 5850 5200 50  0001 C CNN
	1    5850 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	5750 5150 5850 5150
Wire Wire Line
	5850 5150 5850 5200
Text GLabel 5850 5050 2    50   BiDi ~ 0
VGND
Wire Wire Line
	5750 5050 5850 5050
$Comp
L power:VCC #PWR06
U 1 1 5EF996F6
P 6050 4900
F 0 "#PWR06" H 6050 4750 50  0001 C CNN
F 1 "VCC" H 6065 5075 50  0000 C CNN
F 2 "" H 6050 4900 50  0001 C CNN
F 3 "" H 6050 4900 50  0001 C CNN
	1    6050 4900
	1    0    0    -1  
$EndComp
Wire Wire Line
	6050 4900 6050 4950
Wire Wire Line
	6050 4950 5750 4950
Text GLabel 5800 4850 2    50   Output ~ 0
IN
Wire Wire Line
	5800 4850 5750 4850
Wire Notes Line
	6550 4500 6550 5450
Wire Notes Line
	6550 5450 5350 5450
Wire Notes Line
	5350 5450 5350 4500
Wire Notes Line
	5350 4500 6550 4500
$Comp
L Device:C C5
U 1 1 5EFDF596
P 10250 4950
F 0 "C5" H 10365 4997 50  0000 L CNN
F 1 "100n" H 10365 4904 50  0000 L CNN
F 2 "" H 10288 4800 50  0001 C CNN
F 3 "~" H 10250 4950 50  0001 C CNN
	1    10250 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C6
U 1 1 5EFDFCF6
P 10700 4950
F 0 "C6" H 10819 4997 50  0000 L CNN
F 1 "100µ" H 10819 4904 50  0000 L CNN
F 2 "" H 10738 4800 50  0001 C CNN
F 3 "~" H 10700 4950 50  0001 C CNN
	1    10700 4950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR09
U 1 1 5EFE7185
P 10250 5500
F 0 "#PWR09" H 10250 5250 50  0001 C CNN
F 1 "GND" H 10255 5325 50  0000 C CNN
F 2 "" H 10250 5500 50  0001 C CNN
F 3 "" H 10250 5500 50  0001 C CNN
	1    10250 5500
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR08
U 1 1 5EFE789A
P 10250 4300
F 0 "#PWR08" H 10250 4150 50  0001 C CNN
F 1 "VCC" H 10265 4475 50  0000 C CNN
F 2 "" H 10250 4300 50  0001 C CNN
F 3 "" H 10250 4300 50  0001 C CNN
	1    10250 4300
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT P2
U 1 1 5F010706
P 7900 2750
F 0 "P2" H 7800 2700 50  0000 R CNN
F 1 "25k" H 7831 2796 50  0000 R CNN
F 2 "" H 7900 2750 50  0001 C CNN
F 3 "~" H 7900 2750 50  0001 C CNN
	1    7900 2750
	-1   0    0    1   
$EndComp
Wire Wire Line
	7300 2550 7250 2550
Wire Wire Line
	7250 2550 7250 2750
Wire Wire Line
	7900 2600 7900 2450
Connection ~ 7900 2450
Text GLabel 7650 3050 3    50   BiDi ~ 0
VGND
Wire Wire Line
	6650 2350 7300 2350
Connection ~ 6650 2350
Wire Notes Line
	7150 1750 7150 3350
Wire Notes Line
	7150 3350 9950 3350
Wire Notes Line
	9950 3350 9950 1750
Wire Notes Line
	9950 1750 7150 1750
Text Notes 7150 3450 0    50   ~ 0
output driver stage for headphones
Text Notes 7950 2600 0    50   ~ 0
volume\ncontrol
Text Notes 2450 3650 0    50   ~ 0
frequency control
Text Notes 5350 5650 0    50   ~ 0
SPU0410 Mic+Preamp\nDaughterBoard Connector
Text Notes 7950 5850 0    50   ~ 0
power supply + decoupling
Wire Notes Line
	2500 2900 1600 2900
Wire Notes Line
	1600 2900 1600 1800
Wire Notes Line
	1600 1800 2500 1800
Wire Notes Line
	2500 1800 2500 2900
Wire Wire Line
	9200 4400 9700 4400
Wire Wire Line
	10250 4400 10250 4300
Wire Wire Line
	9700 4400 9700 4600
Connection ~ 9700 4400
Wire Wire Line
	9700 4400 10250 4400
Wire Wire Line
	9700 5200 9700 5400
Wire Wire Line
	9700 5400 9200 5400
Wire Wire Line
	10250 5400 9700 5400
Connection ~ 9700 5400
Wire Wire Line
	10250 5400 10250 5500
Connection ~ 10250 5400
Wire Wire Line
	10700 5400 10250 5400
Wire Wire Line
	10250 4400 10700 4400
Connection ~ 10250 4400
Wire Wire Line
	10700 4400 10700 4800
Wire Wire Line
	10250 4400 10250 4800
Wire Wire Line
	10700 5100 10700 5400
Wire Wire Line
	10250 5100 10250 5400
$Comp
L 4xxx:4066 U3
U 5 1 5F07CE91
P 9200 4900
F 0 "U3" H 8800 5000 50  0000 L CNN
F 1 "4066" H 8750 4900 50  0000 L CNN
F 2 "" H 9200 4900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 9200 4900 50  0001 C CNN
	5    9200 4900
	1    0    0    -1  
$EndComp
$Comp
L Connector:AudioJack2_Switch J?
U 1 1 5EE29BEC
P 9050 2650
F 0 "J?" H 8870 2752 50  0000 R CNN
F 1 "AudioJack2_Switch" H 8870 2659 50  0000 R CNN
F 2 "" H 9050 2850 50  0001 C CNN
F 3 "~" H 9050 2850 50  0001 C CNN
	1    9050 2650
	-1   0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5EE335F2
P 7450 2750
F 0 "R?" V 7240 2750 50  0000 C CNN
F 1 "220" V 7333 2750 50  0000 C CNN
F 2 "" V 7380 2750 50  0001 C CNN
F 3 "~" H 7450 2750 50  0001 C CNN
	1    7450 2750
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7300 2750 7250 2750
Wire Wire Line
	7600 2750 7650 2750
Wire Wire Line
	7650 3050 7650 3000
Connection ~ 7650 2750
Wire Wire Line
	7650 2750 7750 2750
NoConn ~ 7900 2900
Wire Wire Line
	7900 2450 8850 2450
Wire Wire Line
	7650 3000 8150 3000
Wire Wire Line
	8150 3000 8150 2650
Wire Wire Line
	8150 2650 8850 2650
Connection ~ 7650 3000
Wire Wire Line
	7650 3000 7650 2750
Text GLabel 8750 2550 0    50   BiDi ~ 0
SWITCH_A
Text GLabel 8750 2750 0    50   BiDi ~ 0
SWITCH_B
Wire Wire Line
	8750 2550 8850 2550
Wire Wire Line
	8750 2750 8850 2750
$Comp
L Device:Battery_Cell BT?
U 1 1 5EE6DA6E
P 8600 4900
F 0 "BT?" H 8850 5000 50  0000 R CNN
F 1 "Li-Ion Cell" H 9250 4850 50  0000 R CNN
F 2 "" V 8600 4960 50  0001 C CNN
F 3 "~" V 8600 4960 50  0001 C CNN
	1    8600 4900
	-1   0    0    -1  
$EndComp
Text Notes 7950 5150 0    50   ~ 0
(e.g. from old\n     cell phone)
Wire Wire Line
	8600 5000 8600 5400
Wire Wire Line
	8600 5400 9200 5400
Connection ~ 9200 5400
Text GLabel 8800 4400 1    50   BiDi ~ 0
SWITCH_B
Wire Wire Line
	8800 4400 9200 4400
Connection ~ 9200 4400
Text GLabel 8600 4400 1    50   BiDi ~ 0
SWITCH_A
Wire Wire Line
	8600 4400 8600 4700
Wire Notes Line
	11050 5750 7900 5750
Wire Notes Line
	7900 5750 7900 3850
Wire Notes Line
	7900 3850 11050 3850
Wire Notes Line
	11050 3850 11050 5750
Wire Wire Line
	3200 3900 3200 4500
Connection ~ 3200 4500
Text Notes 8550 2350 0    50   ~ 0
audio jack with switch\n(switch closed when plug inserted)
$EndSCHEMATC