EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:FunctionGenerator
LIBS:sw_rotary4x5
LIBS:Max7219Display
LIBS:ArduinoProMini
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "XR-2206 Function Generator"
Date "2018-03-06"
Rev "v1.0"
Comp "eNBeWe.de"
Comment1 "Based on Original Design by Scullcom"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L C C2
U 1 1 5A9D2CB3
P 1250 1100
F 0 "C2" H 1275 1200 50  0000 L CNN
F 1 "0.1u" H 1275 1000 50  0000 L CNN
F 2 "" H 1288 950 50  0001 C CNN
F 3 "" H 1250 1100 50  0001 C CNN
	1    1250 1100
	1    0    0    -1  
$EndComp
$Comp
L C C4
U 1 1 5A9D2D10
P 2050 1100
F 0 "C4" H 2075 1200 50  0000 L CNN
F 1 "0.1u" H 2075 1000 50  0000 L CNN
F 2 "" H 2088 950 50  0001 C CNN
F 3 "" H 2050 1100 50  0001 C CNN
	1    2050 1100
	1    0    0    -1  
$EndComp
$Comp
L L7805 U1
U 1 1 5A9D2D41
P 1650 850
F 0 "U1" H 1500 975 50  0000 C CNN
F 1 "L7805" H 1650 975 50  0000 L CNN
F 2 "" H 1675 700 50  0001 L CIN
F 3 "" H 1650 800 50  0001 C CNN
	1    1650 850 
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR01
U 1 1 5A9D3043
P 1050 750
F 0 "#PWR01" H 1050 600 50  0001 C CNN
F 1 "+12V" H 1050 890 50  0000 C CNN
F 2 "" H 1050 750 50  0001 C CNN
F 3 "" H 1050 750 50  0001 C CNN
	1    1050 750 
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR02
U 1 1 5A9D305F
P 2150 750
F 0 "#PWR02" H 2150 600 50  0001 C CNN
F 1 "+5V" H 2150 890 50  0000 C CNN
F 2 "" H 2150 750 50  0001 C CNN
F 3 "" H 2150 750 50  0001 C CNN
	1    2150 750 
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 5A9D30A7
P 2150 1450
F 0 "#PWR03" H 2150 1200 50  0001 C CNN
F 1 "GND" H 2150 1300 50  0000 C CNN
F 2 "" H 2150 1450 50  0001 C CNN
F 3 "" H 2150 1450 50  0001 C CNN
	1    2150 1450
	1    0    0    -1  
$EndComp
$Comp
L XR-2206 U2
U 1 1 5A9D60A4
P 4150 1450
F 0 "U2" H 4500 2300 60  0000 C CNN
F 1 "XR-2206" H 4350 600 60  0000 C CNN
F 2 "" H 4150 1450 60  0001 C CNN
F 3 "" H 4150 1450 60  0001 C CNN
	1    4150 1450
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x02 J1
U 1 1 5A9D61F8
P 750 1050
F 0 "J1" H 750 1150 50  0000 C CNN
F 1 "PWR_IN" H 750 850 50  0000 C CNN
F 2 "" H 750 1050 50  0001 C CNN
F 3 "" H 750 1050 50  0001 C CNN
	1    750  1050
	-1   0    0    -1  
$EndComp
Text Notes 500  1650 0    60   ~ 0
Power Supply
$Comp
L +12V #PWR04
U 1 1 5A9D9298
P 3450 1350
F 0 "#PWR04" H 3450 1200 50  0001 C CNN
F 1 "+12V" H 3300 1400 50  0000 C CNN
F 2 "" H 3450 1350 50  0001 C CNN
F 3 "" H 3450 1350 50  0001 C CNN
	1    3450 1350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 5A9D92B8
P 4900 1500
F 0 "#PWR05" H 4900 1250 50  0001 C CNN
F 1 "GND" H 5050 1450 50  0000 C CNN
F 2 "" H 4900 1500 50  0001 C CNN
F 3 "" H 4900 1500 50  0001 C CNN
	1    4900 1500
	1    0    0    -1  
$EndComp
Text GLabel 3250 950  0    60   Input ~ 0
Sine/Tri_Raw
$Comp
L GND #PWR06
U 1 1 5A9D9473
P 3450 750
F 0 "#PWR06" H 3450 500 50  0001 C CNN
F 1 "GND" H 3300 700 50  0000 C CNN
F 2 "" H 3450 750 50  0001 C CNN
F 3 "" H 3450 750 50  0001 C CNN
	1    3450 750 
	1    0    0    -1  
$EndComp
Text GLabel 4950 1750 2    60   Input ~ 0
Square_Raw
$Comp
L CP1 C12
U 1 1 5A9D954B
P 5000 1950
F 0 "C12" V 5050 2000 50  0000 L CNN
F 1 "10u" V 4950 1750 50  0000 L CNN
F 2 "" H 5000 1950 50  0001 C CNN
F 3 "" H 5000 1950 50  0001 C CNN
	1    5000 1950
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR07
U 1 1 5A9D96F5
P 5300 1900
F 0 "#PWR07" H 5300 1650 50  0001 C CNN
F 1 "GND" H 5450 1850 50  0000 C CNN
F 2 "" H 5300 1900 50  0001 C CNN
F 3 "" H 5300 1900 50  0001 C CNN
	1    5300 1900
	1    0    0    -1  
$EndComp
$Comp
L SW_Rotary4x5 SW2
U 1 1 5A9E5BC8
P 1850 3950
F 0 "SW2" H 1850 5125 50  0000 C CNN
F 1 "Mode Switch" H 1850 2775 50  0000 C CNN
F 2 "" H 1750 5250 50  0001 C CNN
F 3 "" H 1750 5250 50  0001 C CNN
	1    1850 3950
	1    0    0    -1  
$EndComp
Text GLabel 4950 1150 2    60   Input ~ 0
Wave_Adj_A
Text GLabel 4950 1350 2    60   Input ~ 0
Wave_Adj_B
NoConn ~ 2350 3150
NoConn ~ 2350 3250
NoConn ~ 2350 2850
NoConn ~ 2350 2950
Text GLabel 1350 3050 0    60   Input ~ 0
Wave_Adj_A
Wire Wire Line
	1050 1050 950  1050
Wire Wire Line
	1050 750  1050 1050
Wire Wire Line
	1050 850  1350 850 
Wire Wire Line
	1250 850  1250 950 
Wire Wire Line
	950  1150 1050 1150
Wire Wire Line
	1050 1150 1050 1350
Wire Wire Line
	1050 1350 2150 1350
Wire Wire Line
	1250 1350 1250 1250
Connection ~ 1250 850 
Wire Wire Line
	1650 1350 1650 1150
Connection ~ 1250 1350
Wire Wire Line
	1950 850  2150 850 
Wire Wire Line
	2050 850  2050 950 
Wire Wire Line
	2050 1350 2050 1250
Connection ~ 1650 1350
Wire Wire Line
	2150 850  2150 750 
Connection ~ 2050 850 
Connection ~ 1050 850 
Wire Wire Line
	2150 1350 2150 1450
Connection ~ 2050 1350
Wire Notes Line
	500  1700 2300 1700
Wire Notes Line
	2300 500  2300 2600
Wire Wire Line
	3550 1350 3450 1350
Wire Wire Line
	4850 1950 4750 1950
Wire Wire Line
	1450 3050 1350 3050
$Comp
L POT RV1
U 1 1 5A9E6E52
P 2700 3050
F 0 "RV1" V 2800 2950 50  0000 C CNN
F 1 "500" V 2700 3050 50  0000 C CNN
F 2 "" H 2700 3050 50  0001 C CNN
F 3 "" H 2700 3050 50  0001 C CNN
	1    2700 3050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2550 3050 2350 3050
Wire Wire Line
	2450 3050 2450 2900
Wire Wire Line
	2450 2900 2700 2900
Connection ~ 2450 3050
Wire Wire Line
	2850 3050 2950 3050
Text GLabel 2950 3050 2    60   Input ~ 0
Wave_Adj_B
Text GLabel 3250 1150 0    60   Input ~ 0
Amplitude_Ctrl
Wire Wire Line
	3550 1150 3250 1150
Text GLabel 1350 3650 0    60   Input ~ 0
Amplitude_Ctrl
Wire Wire Line
	1450 3650 1350 3650
NoConn ~ 2350 3450
NoConn ~ 2350 3550
$Comp
L POT RV2
U 1 1 5A9E76CF
P 2700 3650
F 0 "RV2" V 2800 3550 50  0000 C CNN
F 1 "50k" V 2700 3650 50  0000 C CNN
F 2 "" H 2700 3650 50  0001 C CNN
F 3 "" H 2700 3650 50  0001 C CNN
	1    2700 3650
	0    -1   -1   0   
$EndComp
$Comp
L POT RV3
U 1 1 5A9E773D
P 2700 3750
F 0 "RV3" V 2800 3850 50  0000 C CNN
F 1 "50k" V 2700 3750 50  0000 C CNN
F 2 "" H 2700 3750 50  0001 C CNN
F 3 "" H 2700 3750 50  0001 C CNN
	1    2700 3750
	0    1    1    0   
$EndComp
Wire Wire Line
	2550 3650 2350 3650
Wire Wire Line
	2700 3500 2450 3500
Wire Wire Line
	2450 3500 2450 3650
Connection ~ 2450 3650
Wire Wire Line
	2550 3750 2350 3750
Wire Wire Line
	2350 3850 2450 3850
Wire Wire Line
	2450 3750 2450 3900
Connection ~ 2450 3750
Wire Wire Line
	2450 3900 2700 3900
Connection ~ 2450 3850
Wire Wire Line
	2850 3650 2950 3650
Wire Wire Line
	2950 3550 2950 3950
Wire Wire Line
	2850 3750 3050 3750
$Comp
L R R5
U 1 1 5A9E7CB5
P 3200 3550
F 0 "R5" V 3280 3550 50  0000 C CNN
F 1 "10k" V 3200 3550 50  0000 C CNN
F 2 "" V 3130 3550 50  0001 C CNN
F 3 "" H 3200 3550 50  0001 C CNN
	1    3200 3550
	0    1    1    0   
$EndComp
$Comp
L R R6
U 1 1 5A9E7CF2
P 3200 3750
F 0 "R6" V 3280 3750 50  0000 C CNN
F 1 "10k" V 3200 3750 50  0000 C CNN
F 2 "" V 3130 3750 50  0001 C CNN
F 3 "" H 3200 3750 50  0001 C CNN
	1    3200 3750
	0    1    1    0   
$EndComp
$Comp
L CP1 C11
U 1 1 5A9E7D38
P 3200 3950
F 0 "C11" V 3250 3750 50  0000 L CNN
F 1 "10u" V 3150 3750 50  0000 L CNN
F 2 "" H 3200 3950 50  0001 C CNN
F 3 "" H 3200 3950 50  0001 C CNN
	1    3200 3950
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3050 3550 2950 3550
Connection ~ 2950 3650
Connection ~ 2950 3750
Wire Wire Line
	2950 3950 3050 3950
$Comp
L +12V #PWR08
U 1 1 5A9E81D9
P 3450 3450
F 0 "#PWR08" H 3450 3300 50  0001 C CNN
F 1 "+12V" H 3450 3590 50  0000 C CNN
F 2 "" H 3450 3450 50  0001 C CNN
F 3 "" H 3450 3450 50  0001 C CNN
	1    3450 3450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3450 3450 3450 3550
Wire Wire Line
	3450 3550 3350 3550
Wire Wire Line
	3350 3950 3450 3950
Wire Wire Line
	3450 3750 3450 4050
Text GLabel 4950 2150 2    60   Input ~ 0
Pulse_Mode_En
$Comp
L R R1
U 1 1 5A9E8754
P 1100 2100
F 0 "R1" V 1180 2100 50  0000 C CNN
F 1 "1k" V 1100 2100 50  0000 C CNN
F 2 "" V 1030 2100 50  0001 C CNN
F 3 "" H 1100 2100 50  0001 C CNN
	1    1100 2100
	0    1    1    0   
$EndComp
$Comp
L R R2
U 1 1 5A9E87A8
P 1600 2100
F 0 "R2" V 1680 2100 50  0000 C CNN
F 1 "1k" V 1600 2100 50  0000 C CNN
F 2 "" V 1530 2100 50  0001 C CNN
F 3 "" H 1600 2100 50  0001 C CNN
	1    1600 2100
	0    1    1    0   
$EndComp
$Comp
L +12V #PWR09
U 1 1 5A9E8848
P 850 2000
F 0 "#PWR09" H 850 1850 50  0001 C CNN
F 1 "+12V" H 850 2140 50  0000 C CNN
F 2 "" H 850 2000 50  0001 C CNN
F 3 "" H 850 2000 50  0001 C CNN
	1    850  2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	850  2000 850  2300
Wire Wire Line
	850  2100 950  2100
Wire Wire Line
	1250 2100 1450 2100
$Comp
L +6V #PWR010
U 1 1 5A9E89F5
P 1350 2000
F 0 "#PWR010" H 1350 1850 50  0001 C CNN
F 1 "+6V" H 1350 2140 50  0000 C CNN
F 2 "" H 1350 2000 50  0001 C CNN
F 3 "" H 1350 2000 50  0001 C CNN
	1    1350 2000
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 5A9E8A37
P 2000 2200
F 0 "#PWR011" H 2000 1950 50  0001 C CNN
F 1 "GND" H 2000 2050 50  0000 C CNN
F 2 "" H 2000 2200 50  0001 C CNN
F 3 "" H 2000 2200 50  0001 C CNN
	1    2000 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1750 2100 2000 2100
Wire Wire Line
	1350 2000 1350 2300
Connection ~ 1350 2100
Text Notes 500  2550 0    60   ~ 0
Floating Ground
Wire Wire Line
	4800 1550 4750 1550
Wire Wire Line
	5300 1900 5200 1900
Wire Wire Line
	5200 1900 5200 1950
Wire Wire Line
	5200 1950 5150 1950
Wire Wire Line
	4900 1500 4800 1500
Wire Wire Line
	4800 1500 4800 1550
Wire Wire Line
	4950 1150 4750 1150
Wire Wire Line
	4750 1350 4950 1350
Wire Wire Line
	4950 1750 4750 1750
Wire Wire Line
	4750 2150 4950 2150
Text GLabel 1350 4250 0    60   Input ~ 0
Pulse_Mode_En
Wire Wire Line
	1350 4250 1450 4250
NoConn ~ 2350 4050
NoConn ~ 2350 4250
NoConn ~ 2350 4350
Text GLabel 2550 4300 2    60   Input ~ 0
Square_Raw
Text GLabel 1350 4850 0    60   Input ~ 0
Sel_Output
Text GLabel 2550 4700 2    60   Input ~ 0
Square_Buf
Text GLabel 2550 4950 2    60   Input ~ 0
Sine/Tri_Buf
Wire Wire Line
	2350 4150 2450 4150
Wire Wire Line
	2450 4150 2450 4450
Wire Wire Line
	2450 4450 2350 4450
Wire Wire Line
	2450 4300 2550 4300
Connection ~ 2450 4300
Wire Wire Line
	2350 4650 2450 4650
Wire Wire Line
	2450 4650 2450 4750
Wire Wire Line
	2450 4700 2550 4700
Wire Wire Line
	2450 4750 2350 4750
Connection ~ 2450 4700
Wire Wire Line
	2350 4850 2450 4850
Wire Wire Line
	2450 4850 2450 5050
Wire Wire Line
	2350 4950 2550 4950
Wire Wire Line
	2450 5050 2350 5050
Connection ~ 2450 4950
Wire Wire Line
	3450 3750 3350 3750
Connection ~ 3450 3950
$Comp
L GND #PWR012
U 1 1 5A9EAEC2
P 3450 4050
F 0 "#PWR012" H 3450 3800 50  0001 C CNN
F 1 "GND" H 3450 3900 50  0000 C CNN
F 2 "" H 3450 4050 50  0001 C CNN
F 3 "" H 3450 4050 50  0001 C CNN
	1    3450 4050
	1    0    0    -1  
$EndComp
$Comp
L POT RV6
U 1 1 5A9EB328
P 5000 750
F 0 "RV6" V 5100 650 50  0000 C CNN
F 1 "25k" V 5000 750 50  0000 C CNN
F 2 "" H 5000 750 50  0001 C CNN
F 3 "" H 5000 750 50  0001 C CNN
	1    5000 750 
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4850 750  4750 750 
Wire Wire Line
	4750 950  5250 950 
Wire Wire Line
	5250 950  5250 750 
Wire Wire Line
	5250 750  5150 750 
$Comp
L GND #PWR013
U 1 1 5A9EB57E
P 5300 600
F 0 "#PWR013" H 5300 350 50  0001 C CNN
F 1 "GND" H 5450 550 50  0000 C CNN
F 2 "" H 5300 600 50  0001 C CNN
F 3 "" H 5300 600 50  0001 C CNN
	1    5300 600 
	1    0    0    -1  
$EndComp
Wire Wire Line
	5000 600  5000 550 
Wire Wire Line
	5000 550  5300 550 
Wire Wire Line
	5300 550  5300 600 
$Comp
L POT RV5
U 1 1 5A9EB75C
P 3200 2250
F 0 "RV5" V 3300 2150 50  0000 C CNN
F 1 "100k" V 3200 2250 50  0000 C CNN
F 2 "" H 3200 2250 50  0001 C CNN
F 3 "" H 3200 2250 50  0001 C CNN
	1    3200 2250
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3550 2150 3550 2250
Wire Wire Line
	3550 2250 3350 2250
Wire Wire Line
	3200 2100 3450 2100
Wire Wire Line
	3450 2100 3450 2250
Connection ~ 3450 2250
$Comp
L POT RV4
U 1 1 5A9EBB8C
P 3200 2000
F 0 "RV4" V 3300 1900 50  0000 C CNN
F 1 "100k" V 3200 2000 50  0000 C CNN
F 2 "" H 3200 2000 50  0001 C CNN
F 3 "" H 3200 2000 50  0001 C CNN
	1    3200 2000
	0    -1   -1   0   
$EndComp
$Comp
L R R3
U 1 1 5A9EBCF2
P 2800 2000
F 0 "R3" V 2880 2000 50  0000 C CNN
F 1 "1k" V 2800 2000 50  0000 C CNN
F 2 "" V 2730 2000 50  0001 C CNN
F 3 "" H 2800 2000 50  0001 C CNN
	1    2800 2000
	0    1    1    0   
$EndComp
$Comp
L R R4
U 1 1 5A9EBD6D
P 2800 2250
F 0 "R4" V 2880 2250 50  0000 C CNN
F 1 "1k" V 2800 2250 50  0000 C CNN
F 2 "" V 2730 2250 50  0001 C CNN
F 3 "" H 2800 2250 50  0001 C CNN
	1    2800 2250
	0    1    1    0   
$EndComp
Wire Wire Line
	3050 2250 2950 2250
Wire Wire Line
	2550 2250 2650 2250
$Comp
L GND #PWR014
U 1 1 5A9EC076
P 2550 2350
F 0 "#PWR014" H 2550 2100 50  0001 C CNN
F 1 "GND" H 2700 2300 50  0000 C CNN
F 2 "" H 2550 2350 50  0001 C CNN
F 3 "" H 2550 2350 50  0001 C CNN
	1    2550 2350
	1    0    0    -1  
$EndComp
Connection ~ 2550 2250
Text GLabel 3350 1550 0    60   Input ~ 0
Freq_Cap_A
Text GLabel 3350 1750 0    60   Input ~ 0
Freq_Cap_B
Wire Wire Line
	3550 1950 3550 2000
Wire Wire Line
	3550 2000 3350 2000
Wire Wire Line
	3200 1850 3450 1850
Wire Wire Line
	3450 1850 3450 2000
Connection ~ 3450 2000
Wire Wire Line
	3050 2000 2950 2000
Wire Wire Line
	2650 2000 2550 2000
Wire Wire Line
	2550 2000 2550 2350
Wire Wire Line
	3350 1750 3550 1750
Wire Wire Line
	3550 1550 3350 1550
Wire Notes Line
	500  2600 5900 2600
Wire Notes Line
	5900 500  5900 2850
Text Notes 3150 2550 2    60   ~ 0
Signal Generation
Wire Notes Line
	3650 2600 3650 7800
$Comp
L SW_Rotary2x6 SW1
U 1 1 5A9ED21D
P 1650 6650
F 0 "SW1" H 1650 7350 50  0000 C CNN
F 1 "Frequency Range" H 1650 5950 50  0000 C CNN
F 2 "" H 1550 7250 50  0001 C CNN
F 3 "" H 1550 7250 50  0001 C CNN
	1    1650 6650
	1    0    0    -1  
$EndComp
$Comp
L C C9
U 1 1 5A9ED3FF
P 2750 6350
F 0 "C9" V 2700 6400 50  0000 L CNN
F 1 "??" V 2700 6150 50  0000 L CNN
F 2 "" H 2788 6200 50  0001 C CNN
F 3 "" H 2750 6350 50  0001 C CNN
	1    2750 6350
	0    1    1    0   
$EndComp
$Comp
L C C8
U 1 1 5A9ED58F
P 2750 6150
F 0 "C8" V 2700 6200 50  0000 L CNN
F 1 "??" V 2700 5950 50  0000 L CNN
F 2 "" H 2788 6000 50  0001 C CNN
F 3 "" H 2750 6150 50  0001 C CNN
	1    2750 6150
	0    1    1    0   
$EndComp
$Comp
L C C6
U 1 1 5A9ED5FF
P 2400 6250
F 0 "C6" V 2350 6300 50  0000 L CNN
F 1 "??" V 2350 6050 50  0000 L CNN
F 2 "" H 2438 6100 50  0001 C CNN
F 3 "" H 2400 6250 50  0001 C CNN
	1    2400 6250
	0    1    1    0   
$EndComp
$Comp
L C C5
U 1 1 5A9ED669
P 2400 6050
F 0 "C5" V 2350 6100 50  0000 L CNN
F 1 "??" V 2350 5850 50  0000 L CNN
F 2 "" H 2438 5900 50  0001 C CNN
F 3 "" H 2400 6050 50  0001 C CNN
	1    2400 6050
	0    1    1    0   
$EndComp
$Comp
L C C7
U 1 1 5A9ED6CA
P 2400 6450
F 0 "C7" V 2350 6500 50  0000 L CNN
F 1 "??" V 2350 6250 50  0000 L CNN
F 2 "" H 2438 6300 50  0001 C CNN
F 3 "" H 2400 6450 50  0001 C CNN
	1    2400 6450
	0    1    1    0   
$EndComp
$Comp
L C C10
U 1 1 5A9ED72A
P 2750 6550
F 0 "C10" V 2700 6600 50  0000 L CNN
F 1 "??" V 2700 6350 50  0000 L CNN
F 2 "" H 2788 6400 50  0001 C CNN
F 3 "" H 2750 6550 50  0001 C CNN
	1    2750 6550
	0    1    1    0   
$EndComp
Wire Wire Line
	2250 6050 2150 6050
Wire Wire Line
	2150 6150 2600 6150
Wire Wire Line
	2150 6250 2250 6250
Wire Wire Line
	2150 6350 2600 6350
Wire Wire Line
	2150 6450 2250 6450
Wire Wire Line
	2600 6550 2150 6550
Wire Wire Line
	2900 6550 2950 6550
Wire Wire Line
	2950 6550 2950 7250
Wire Wire Line
	2950 7250 2150 7250
Wire Wire Line
	2550 6450 3000 6450
Wire Wire Line
	3000 6450 3000 7150
Wire Wire Line
	3000 7150 2150 7150
Wire Wire Line
	2900 6350 3050 6350
Wire Wire Line
	3050 6350 3050 7050
Wire Wire Line
	3050 7050 2150 7050
Wire Wire Line
	2550 6250 3100 6250
Wire Wire Line
	3100 6250 3100 6950
Wire Wire Line
	3100 6950 2150 6950
Wire Wire Line
	2150 6850 3150 6850
Wire Wire Line
	3150 6850 3150 6150
Wire Wire Line
	3150 6150 2900 6150
Wire Wire Line
	2550 6050 3200 6050
Wire Wire Line
	3200 6050 3200 6750
Wire Wire Line
	3200 6750 2150 6750
Text GLabel 1150 6350 0    60   Input ~ 0
Freq_Cap_A
Text GLabel 1150 7050 0    60   Input ~ 0
Freq_Cap_B
Wire Wire Line
	1250 6350 1150 6350
Wire Wire Line
	1150 7050 1250 7050
Text Notes 1750 7700 2    60   ~ 0
Frequency Range Selection
Wire Wire Line
	1450 4850 1350 4850
Wire Wire Line
	3550 750  3450 750 
Wire Wire Line
	3550 950  3250 950 
$Comp
L GND #PWR015
U 1 1 5A9F1DF6
P 4750 6200
F 0 "#PWR015" H 4750 5950 50  0001 C CNN
F 1 "GND" H 4600 6150 50  0000 C CNN
F 2 "" H 4750 6200 50  0001 C CNN
F 3 "" H 4750 6200 50  0001 C CNN
	1    4750 6200
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR016
U 1 1 5A9F204F
P 6300 6000
F 0 "#PWR016" H 6300 5850 50  0001 C CNN
F 1 "+5V" H 6400 6050 50  0000 C CNN
F 2 "" H 6300 6000 50  0001 C CNN
F 3 "" H 6300 6000 50  0001 C CNN
	1    6300 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	4950 6250 4850 6250
Wire Wire Line
	4850 6250 4850 6200
Wire Wire Line
	4850 6200 4750 6200
Text GLabel 3900 6150 2    60   Input ~ 0
Square_Raw
$Comp
L 74HC14 U3
U 1 1 5A9F25AD
P 4400 6650
F 0 "U3" H 4550 6750 50  0000 C CNN
F 1 "74HC14" H 4600 6550 50  0000 C CNN
F 2 "" H 4400 6650 50  0001 C CNN
F 3 "" H 4400 6650 50  0001 C CNN
	1    4400 6650
	1    0    0    -1  
$EndComp
Wire Wire Line
	4950 6650 4850 6650
Wire Wire Line
	3800 6650 3950 6650
$Comp
L GND #PWR017
U 1 1 5A9F2DCA
P 4350 6750
F 0 "#PWR017" H 4350 6500 50  0001 C CNN
F 1 "GND" H 4350 6600 50  0000 C CNN
F 2 "" H 4350 6750 50  0001 C CNN
F 3 "" H 4350 6750 50  0001 C CNN
	1    4350 6750
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR018
U 1 1 5A9F2E2C
P 4350 6550
F 0 "#PWR018" H 4350 6400 50  0001 C CNN
F 1 "+5V" H 4350 6700 50  0000 C CNN
F 2 "" H 4350 6550 50  0001 C CNN
F 3 "" H 4350 6550 50  0001 C CNN
	1    4350 6550
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 5A9F3492
P 3800 6400
F 0 "R7" V 3880 6400 50  0000 C CNN
F 1 "1k" V 3800 6400 50  0000 C CNN
F 2 "" V 3730 6400 50  0001 C CNN
F 3 "" H 3800 6400 50  0001 C CNN
	1    3800 6400
	-1   0    0    1   
$EndComp
$Comp
L D_Zener D1
U 1 1 5A9F3543
P 3900 6850
F 0 "D1" V 3900 6950 50  0000 C CNN
F 1 "5.1V" V 4000 6950 50  0000 C CNN
F 2 "" H 3900 6850 50  0001 C CNN
F 3 "" H 3900 6850 50  0001 C CNN
	1    3900 6850
	0    1    1    0   
$EndComp
$Comp
L GND #PWR019
U 1 1 5A9F3726
P 3900 7050
F 0 "#PWR019" H 3900 6800 50  0001 C CNN
F 1 "GND" H 3900 6900 50  0000 C CNN
F 2 "" H 3900 7050 50  0001 C CNN
F 3 "" H 3900 7050 50  0001 C CNN
	1    3900 7050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 6700 3900 6650
Connection ~ 3900 6650
Wire Wire Line
	3900 7050 3900 7000
Wire Wire Line
	3800 6650 3800 6550
Wire Wire Line
	3900 6150 3800 6150
Wire Wire Line
	3800 6150 3800 6250
$Comp
L C C13
U 1 1 5A9F3F40
P 6300 6250
F 0 "C13" H 6350 6350 50  0000 L CNN
F 1 "0.1u" H 6350 6150 50  0000 L CNN
F 2 "" H 6338 6100 50  0001 C CNN
F 3 "" H 6300 6250 50  0001 C CNN
	1    6300 6250
	1    0    0    -1  
$EndComp
Wire Wire Line
	6300 6000 6300 6100
Wire Wire Line
	6300 6050 6150 6050
Wire Wire Line
	6150 6050 6150 6250
Wire Wire Line
	6150 6250 6050 6250
Connection ~ 6300 6050
$Comp
L GND #PWR020
U 1 1 5A9F45E1
P 6300 6400
F 0 "#PWR020" H 6300 6150 50  0001 C CNN
F 1 "GND" H 6400 6300 50  0000 C CNN
F 2 "" H 6300 6400 50  0001 C CNN
F 3 "" H 6300 6400 50  0001 C CNN
	1    6300 6400
	1    0    0    -1  
$EndComp
$Comp
L MAX7219Display U6
U 1 1 5A9F4B43
P 6700 6950
F 0 "U6" H 6800 7250 60  0000 C CNN
F 1 "Display" H 6650 6650 60  0000 C CNN
F 2 "" H 6700 6950 60  0001 C CNN
F 3 "" H 6700 6950 60  0001 C CNN
	1    6700 6950
	1    0    0    -1  
$EndComp
Wire Wire Line
	6350 6850 6050 6850
Wire Wire Line
	6050 6950 6350 6950
Wire Wire Line
	6350 7050 6050 7050
$Comp
L GND #PWR021
U 1 1 5A9F4F52
P 6250 7250
F 0 "#PWR021" H 6250 7000 50  0001 C CNN
F 1 "GND" H 6250 7100 50  0000 C CNN
F 2 "" H 6250 7250 50  0001 C CNN
F 3 "" H 6250 7250 50  0001 C CNN
	1    6250 7250
	1    0    0    -1  
$EndComp
Wire Wire Line
	6250 7250 6250 7150
Wire Wire Line
	6250 7150 6350 7150
$Comp
L +5V #PWR022
U 1 1 5A9F5088
P 6250 6650
F 0 "#PWR022" H 6250 6500 50  0001 C CNN
F 1 "+5V" H 6350 6700 50  0000 C CNN
F 2 "" H 6250 6650 50  0001 C CNN
F 3 "" H 6250 6650 50  0001 C CNN
	1    6250 6650
	1    0    0    -1  
$EndComp
Wire Wire Line
	6350 6750 6250 6750
Wire Wire Line
	6250 6750 6250 6650
Text Notes 4600 7700 2    60   ~ 0
Frequency Readout
Text Notes 500  5500 0    60   ~ 0
Mode Select\n1 Square   2 PWM   3 Sine   4 Triangle   5 Ramp 
Wire Notes Line
	500  5550 6950 5550
Wire Notes Line
	6950 5550 6950 7800
$Comp
L R R8
U 1 1 5A9F6138
P 5100 1650
F 0 "R8" V 5050 1800 50  0000 C CNN
F 1 "10k" V 5100 1650 50  0000 C CNN
F 2 "" V 5030 1650 50  0001 C CNN
F 3 "" H 5100 1650 50  0001 C CNN
	1    5100 1650
	0    1    1    0   
$EndComp
Wire Wire Line
	4850 1750 4850 1650
Wire Wire Line
	4850 1650 4950 1650
Connection ~ 4850 1750
$Comp
L +12V #PWR023
U 1 1 5A9F64FB
P 5350 1600
F 0 "#PWR023" H 5350 1450 50  0001 C CNN
F 1 "+12V" H 5450 1700 50  0000 C CNN
F 2 "" H 5350 1600 50  0001 C CNN
F 3 "" H 5350 1600 50  0001 C CNN
	1    5350 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 1600 5350 1650
Wire Wire Line
	5350 1650 5250 1650
Text GLabel 8100 950  0    60   Input ~ 0
Sine/Tri_Raw
Text GLabel 6700 2050 0    60   Input ~ 0
Square_Raw
$Comp
L R R9
U 1 1 5A9F6AD0
P 6950 2050
F 0 "R9" V 7030 2050 50  0000 C CNN
F 1 "1k" V 6950 2050 50  0000 C CNN
F 2 "" V 6880 2050 50  0001 C CNN
F 3 "" H 6950 2050 50  0001 C CNN
	1    6950 2050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6800 2050 6700 2050
$Comp
L 74HC14 U3
U 2 1 5A9F6CD2
P 7650 2050
F 0 "U3" H 7800 2150 50  0000 C CNN
F 1 "74HC14" H 7850 1950 50  0000 C CNN
F 2 "" H 7650 2050 50  0001 C CNN
F 3 "" H 7650 2050 50  0001 C CNN
	2    7650 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	7200 2050 7100 2050
$Comp
L C C14
U 1 1 5A9F6FB7
P 8350 950
F 0 "C14" V 8400 1000 50  0000 L CNN
F 1 "0.22u" V 8300 1000 50  0000 L CNN
F 2 "" H 8388 800 50  0001 C CNN
F 3 "" H 8350 950 50  0001 C CNN
	1    8350 950 
	0    1    1    0   
$EndComp
Wire Wire Line
	8200 950  8100 950 
$Comp
L NE5532 U7
U 1 1 5A9F72D0
P 9300 1050
F 0 "U7" H 9300 1250 50  0000 L CNN
F 1 "NE5532" H 9300 850 50  0000 L CNN
F 2 "" H 9300 1050 50  0001 C CNN
F 3 "" H 9300 1050 50  0001 C CNN
	1    9300 1050
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR024
U 1 1 5A9F75E7
P 9200 750
F 0 "#PWR024" H 9200 600 50  0001 C CNN
F 1 "+12V" H 9200 890 50  0000 C CNN
F 2 "" H 9200 750 50  0001 C CNN
F 3 "" H 9200 750 50  0001 C CNN
	1    9200 750 
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR025
U 1 1 5A9F7664
P 9200 1350
F 0 "#PWR025" H 9200 1100 50  0001 C CNN
F 1 "GND" H 9200 1200 50  0000 C CNN
F 2 "" H 9200 1350 50  0001 C CNN
F 3 "" H 9200 1350 50  0001 C CNN
	1    9200 1350
	1    0    0    -1  
$EndComp
$Comp
L CP1 C1
U 1 1 5A9F7811
P 1050 2300
F 0 "C1" V 1100 2350 50  0000 L CNN
F 1 "220u" V 1000 2050 50  0000 L CNN
F 2 "" H 1050 2300 50  0001 C CNN
F 3 "" H 1050 2300 50  0001 C CNN
	1    1050 2300
	0    -1   -1   0   
$EndComp
$Comp
L CP1 C3
U 1 1 5A9F7A41
P 1600 2300
F 0 "C3" V 1650 2350 50  0000 L CNN
F 1 "220u" V 1550 2050 50  0000 L CNN
F 2 "" H 1600 2300 50  0001 C CNN
F 3 "" H 1600 2300 50  0001 C CNN
	1    1600 2300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2000 2100 2000 2200
Wire Wire Line
	1750 2300 1800 2300
Wire Wire Line
	1800 2300 1800 2100
Connection ~ 1800 2100
Connection ~ 1350 2300
Wire Wire Line
	1200 2300 1450 2300
Wire Wire Line
	850  2300 900  2300
Connection ~ 850  2100
$Comp
L R R12
U 1 1 5A9F8548
P 8600 1200
F 0 "R12" V 8680 1200 50  0000 C CNN
F 1 "47k" V 8600 1200 50  0000 C CNN
F 2 "" V 8530 1200 50  0001 C CNN
F 3 "" H 8600 1200 50  0001 C CNN
	1    8600 1200
	-1   0    0    1   
$EndComp
$Comp
L +6V #PWR026
U 1 1 5A9F8AB2
P 8400 1250
F 0 "#PWR026" H 8400 1100 50  0001 C CNN
F 1 "+6V" H 8400 1390 50  0000 C CNN
F 2 "" H 8400 1250 50  0001 C CNN
F 3 "" H 8400 1250 50  0001 C CNN
	1    8400 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	8400 1250 8400 1350
Wire Wire Line
	8400 1350 8600 1350
$Comp
L POT RV8
U 1 1 5A9F9064
P 9700 1600
F 0 "RV8" V 9800 1500 50  0000 C CNN
F 1 "20k" V 9700 1600 50  0000 C CNN
F 2 "" H 9700 1600 50  0001 C CNN
F 3 "" H 9700 1600 50  0001 C CNN
	1    9700 1600
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9850 1600 9950 1600
Wire Wire Line
	9950 1600 9950 1050
Wire Wire Line
	9600 1050 10050 1050
Wire Wire Line
	9700 1450 9950 1450
Connection ~ 9950 1450
Wire Wire Line
	9550 1600 8900 1600
Wire Wire Line
	8900 1600 8900 1150
Wire Wire Line
	8800 1150 9000 1150
$Comp
L R R14
U 1 1 5A9F9679
P 8800 1400
F 0 "R14" V 8880 1400 50  0000 C CNN
F 1 "10k" V 8800 1400 50  0000 C CNN
F 2 "" V 8730 1400 50  0001 C CNN
F 3 "" H 8800 1400 50  0001 C CNN
	1    8800 1400
	-1   0    0    1   
$EndComp
Wire Wire Line
	8800 1150 8800 1250
Connection ~ 8900 1150
$Comp
L +6V #PWR027
U 1 1 5A9F9934
P 8700 1600
F 0 "#PWR027" H 8700 1450 50  0001 C CNN
F 1 "+6V" H 8600 1600 50  0000 C CNN
F 2 "" H 8700 1600 50  0001 C CNN
F 3 "" H 8700 1600 50  0001 C CNN
	1    8700 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 1550 8800 1650
Wire Wire Line
	8800 1650 8700 1650
Wire Wire Line
	8700 1650 8700 1600
Wire Wire Line
	8500 950  9000 950 
Wire Wire Line
	8600 1050 8600 950 
Connection ~ 8600 950 
Text GLabel 10050 1050 2    60   Input ~ 0
Sine/Tri_Buf
Connection ~ 9950 1050
$Comp
L NE5532 U7
U 2 1 5A9FA1DD
P 9300 2150
F 0 "U7" H 9300 2350 50  0000 L CNN
F 1 "NE5532" H 9300 1950 50  0000 L CNN
F 2 "" H 9300 2150 50  0001 C CNN
F 3 "" H 9300 2150 50  0001 C CNN
	2    9300 2150
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR028
U 1 1 5A9FA1E3
P 9200 1850
F 0 "#PWR028" H 9200 1700 50  0001 C CNN
F 1 "+12V" H 9200 1990 50  0000 C CNN
F 2 "" H 9200 1850 50  0001 C CNN
F 3 "" H 9200 1850 50  0001 C CNN
	1    9200 1850
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR029
U 1 1 5A9FA1E9
P 9200 2450
F 0 "#PWR029" H 9200 2200 50  0001 C CNN
F 1 "GND" H 9200 2300 50  0000 C CNN
F 2 "" H 9200 2450 50  0001 C CNN
F 3 "" H 9200 2450 50  0001 C CNN
	1    9200 2450
	1    0    0    -1  
$EndComp
$Comp
L R R13
U 1 1 5A9FA1EF
P 8600 2300
F 0 "R13" V 8680 2300 50  0000 C CNN
F 1 "47k" V 8600 2300 50  0000 C CNN
F 2 "" V 8530 2300 50  0001 C CNN
F 3 "" H 8600 2300 50  0001 C CNN
	1    8600 2300
	-1   0    0    1   
$EndComp
$Comp
L +6V #PWR030
U 1 1 5A9FA1F5
P 8400 2350
F 0 "#PWR030" H 8400 2200 50  0001 C CNN
F 1 "+6V" H 8400 2490 50  0000 C CNN
F 2 "" H 8400 2350 50  0001 C CNN
F 3 "" H 8400 2350 50  0001 C CNN
	1    8400 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	8400 2350 8400 2450
Wire Wire Line
	8400 2450 8600 2450
$Comp
L POT RV9
U 1 1 5A9FA1FD
P 9700 2700
F 0 "RV9" V 9800 2600 50  0000 C CNN
F 1 "20k" V 9700 2700 50  0000 C CNN
F 2 "" H 9700 2700 50  0001 C CNN
F 3 "" H 9700 2700 50  0001 C CNN
	1    9700 2700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9850 2700 9950 2700
Wire Wire Line
	9950 2700 9950 2150
Wire Wire Line
	9600 2150 10050 2150
Wire Wire Line
	9700 2550 9950 2550
Connection ~ 9950 2550
Wire Wire Line
	9550 2700 8900 2700
Wire Wire Line
	8900 2700 8900 2250
Wire Wire Line
	8800 2250 9000 2250
$Comp
L R R15
U 1 1 5A9FA20B
P 8800 2500
F 0 "R15" V 8880 2500 50  0000 C CNN
F 1 "10k" V 8800 2500 50  0000 C CNN
F 2 "" V 8730 2500 50  0001 C CNN
F 3 "" H 8800 2500 50  0001 C CNN
	1    8800 2500
	-1   0    0    1   
$EndComp
Wire Wire Line
	8800 2250 8800 2350
Connection ~ 8900 2250
$Comp
L +6V #PWR031
U 1 1 5A9FA213
P 8700 2700
F 0 "#PWR031" H 8700 2550 50  0001 C CNN
F 1 "+6V" H 8600 2700 50  0000 C CNN
F 2 "" H 8700 2700 50  0001 C CNN
F 3 "" H 8700 2700 50  0001 C CNN
	1    8700 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 2650 8800 2750
Wire Wire Line
	8800 2750 8700 2750
Wire Wire Line
	8700 2750 8700 2700
Wire Wire Line
	8500 2050 9000 2050
Wire Wire Line
	8600 2150 8600 2050
Connection ~ 8600 2050
Connection ~ 9950 2150
$Comp
L CP1 C15
U 1 1 5A9FA48F
P 8350 2050
F 0 "C15" V 8400 1850 50  0000 L CNN
F 1 "10u" V 8300 1850 50  0000 L CNN
F 2 "" H 8350 2050 50  0001 C CNN
F 3 "" H 8350 2050 50  0001 C CNN
	1    8350 2050
	0    1    1    0   
$EndComp
Text GLabel 10050 2150 2    60   Input ~ 0
Square_Buf
$Comp
L C C16
U 1 1 5A9FA769
P 9700 2450
F 0 "C16" V 9750 2500 50  0000 L CNN
F 1 "100p" V 9650 2500 50  0000 L CNN
F 2 "" H 9738 2300 50  0001 C CNN
F 3 "" H 9700 2450 50  0001 C CNN
	1    9700 2450
	0    1    1    0   
$EndComp
Wire Wire Line
	9950 2450 9850 2450
Connection ~ 9950 2450
Wire Wire Line
	9550 2450 9450 2450
Wire Wire Line
	9450 2450 9450 2700
Connection ~ 9450 2700
Wire Wire Line
	8200 2050 8100 2050
Wire Notes Line
	5900 2850 11200 2850
Text Notes 6700 2800 2    60   ~ 0
Signal Buffering
NoConn ~ 4950 5950
NoConn ~ 4950 6050
NoConn ~ 4950 6150
NoConn ~ 4950 6450
NoConn ~ 4950 6550
NoConn ~ 4950 6750
NoConn ~ 4950 6850
NoConn ~ 4950 6950
NoConn ~ 4950 7050
NoConn ~ 5350 7450
NoConn ~ 5450 7450
NoConn ~ 5550 7450
NoConn ~ 5650 7450
NoConn ~ 6050 6750
NoConn ~ 6050 6650
NoConn ~ 6050 6550
NoConn ~ 6050 6450
NoConn ~ 6050 6350
NoConn ~ 6050 6150
NoConn ~ 6050 6050
NoConn ~ 6050 5950
$Comp
L ArduinoProMini U5
U 1 1 5A9EA42C
P 5500 6500
F 0 "U5" H 5800 7300 60  0000 C CNN
F 1 "ArduinoProMini" V 5500 6500 60  0000 C CNN
F 2 "" H 5500 6500 60  0001 C CNN
F 3 "" H 5500 6500 60  0001 C CNN
	1    5500 6500
	1    0    0    -1  
$EndComp
NoConn ~ 4950 6350
$Comp
L NE5532 U4
U 1 1 5A9EB4B8
P 4750 3500
F 0 "U4" H 4750 3700 50  0000 L CNN
F 1 "NE5532" H 4750 3300 50  0000 L CNN
F 2 "" H 4750 3500 50  0001 C CNN
F 3 "" H 4750 3500 50  0001 C CNN
	1    4750 3500
	1    0    0    -1  
$EndComp
$Comp
L NE5532 U4
U 2 1 5A9EB537
P 6400 3500
F 0 "U4" H 6400 3700 50  0000 L CNN
F 1 "NE5532" H 6400 3300 50  0000 L CNN
F 2 "" H 6400 3500 50  0001 C CNN
F 3 "" H 6400 3500 50  0001 C CNN
	2    6400 3500
	1    0    0    -1  
$EndComp
Text GLabel 4350 3400 0    60   Input ~ 0
Sel_Output
Wire Wire Line
	4350 3400 4450 3400
$Comp
L GND #PWR032
U 1 1 5A9EB9EE
P 4650 3800
F 0 "#PWR032" H 4650 3550 50  0001 C CNN
F 1 "GND" H 4650 3650 50  0000 C CNN
F 2 "" H 4650 3800 50  0001 C CNN
F 3 "" H 4650 3800 50  0001 C CNN
	1    4650 3800
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR033
U 1 1 5A9EBA92
P 4650 3200
F 0 "#PWR033" H 4650 3050 50  0001 C CNN
F 1 "+12V" H 4650 3340 50  0000 C CNN
F 2 "" H 4650 3200 50  0001 C CNN
F 3 "" H 4650 3200 50  0001 C CNN
	1    4650 3200
	1    0    0    -1  
$EndComp
Wire Wire Line
	5050 3500 5550 3500
Wire Wire Line
	5150 3500 5150 4050
Wire Wire Line
	5150 4050 4350 4050
Wire Wire Line
	4350 4050 4350 3600
Wire Wire Line
	4350 3600 4450 3600
$Comp
L POT RV7
U 1 1 5A9EBC55
P 5550 3750
F 0 "RV7" V 5650 3650 50  0000 C CNN
F 1 "20k" V 5550 3750 50  0000 C CNN
F 2 "" H 5550 3750 50  0001 C CNN
F 3 "" H 5550 3750 50  0001 C CNN
	1    5550 3750
	1    0    0    -1  
$EndComp
Connection ~ 5150 3500
$Comp
L +6V #PWR034
U 1 1 5A9EC16D
P 5400 3800
F 0 "#PWR034" H 5400 3650 50  0001 C CNN
F 1 "+6V" H 5300 3800 50  0000 C CNN
F 2 "" H 5400 3800 50  0001 C CNN
F 3 "" H 5400 3800 50  0001 C CNN
	1    5400 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	5550 3500 5550 3600
Wire Wire Line
	5550 3900 5400 3900
Wire Wire Line
	5400 3900 5400 3800
Wire Wire Line
	5800 3400 6100 3400
Wire Wire Line
	5800 3400 5800 3750
Wire Wire Line
	5800 3750 5700 3750
$Comp
L +12V #PWR035
U 1 1 5A9ECA9C
P 6300 3200
F 0 "#PWR035" H 6300 3050 50  0001 C CNN
F 1 "+12V" H 6300 3340 50  0000 C CNN
F 2 "" H 6300 3200 50  0001 C CNN
F 3 "" H 6300 3200 50  0001 C CNN
	1    6300 3200
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR036
U 1 1 5A9ECB43
P 6300 3800
F 0 "#PWR036" H 6300 3550 50  0001 C CNN
F 1 "GND" H 6300 3650 50  0000 C CNN
F 2 "" H 6300 3800 50  0001 C CNN
F 3 "" H 6300 3800 50  0001 C CNN
	1    6300 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	6100 3600 6000 3600
Wire Wire Line
	6000 3600 6000 4050
Wire Wire Line
	6000 4050 6800 4050
Wire Wire Line
	6800 4050 6800 3500
Wire Wire Line
	6700 3500 6900 3500
$Comp
L R R10
U 1 1 5A9ECDE6
P 7150 3400
F 0 "R10" V 7230 3400 50  0000 C CNN
F 1 "1k" V 7150 3400 50  0000 C CNN
F 2 "" V 7080 3400 50  0001 C CNN
F 3 "" H 7150 3400 50  0001 C CNN
	1    7150 3400
	0    -1   -1   0   
$EndComp
$Comp
L R R11
U 1 1 5A9ED00F
P 7150 3600
F 0 "R11" V 7230 3600 50  0000 C CNN
F 1 "1k" V 7150 3600 50  0000 C CNN
F 2 "" V 7080 3600 50  0001 C CNN
F 3 "" H 7150 3600 50  0001 C CNN
	1    7150 3600
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7000 3400 6900 3400
Wire Wire Line
	6900 3400 6900 3600
Connection ~ 6800 3500
Wire Wire Line
	6900 3600 7000 3600
Connection ~ 6900 3500
Wire Wire Line
	7300 3400 7400 3400
Wire Wire Line
	7400 3400 7400 3600
Wire Wire Line
	7400 3600 7300 3600
$Comp
L Conn_Coaxial J2
U 1 1 5A9ED466
P 7650 3500
F 0 "J2" H 7660 3620 50  0000 C CNN
F 1 "BNC Out" V 7765 3500 50  0000 C CNN
F 2 "" H 7650 3500 50  0001 C CNN
F 3 "" H 7650 3500 50  0001 C CNN
	1    7650 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	7500 3500 7400 3500
Connection ~ 7400 3500
$Comp
L +6V #PWR037
U 1 1 5A9ED6A0
P 7550 3700
F 0 "#PWR037" H 7550 3550 50  0001 C CNN
F 1 "+6V" H 7450 3700 50  0000 C CNN
F 2 "" H 7550 3700 50  0001 C CNN
F 3 "" H 7550 3700 50  0001 C CNN
	1    7550 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	7650 3700 7650 3800
Wire Wire Line
	7650 3800 7550 3800
Wire Wire Line
	7550 3800 7550 3700
Wire Notes Line
	7900 2850 7900 4350
Wire Notes Line
	7900 4350 3650 4350
Text Notes 3700 4300 0    60   ~ 0
Output Amplitude
$EndSCHEMATC