V_AMP.bak 24.7 KB
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EESchema Schematic File Version 2
LIBS:74xgxx
LIBS:74xx
LIBS:ac-dc
LIBS:actel
LIBS:adc-dac
LIBS:Altera
LIBS:analog_devices
LIBS:analog_switches
LIBS:atmel
LIBS:audio
LIBS:brooktre
LIBS:cmos4000
LIBS:cmos_ieee
LIBS:conn
LIBS:contrib
LIBS:cypress
LIBS:dc-dc
LIBS:device
LIBS:digital-audio
LIBS:diode
LIBS:display
LIBS:dsp
LIBS:elec-unifil
LIBS:ESD_Protection
LIBS:ftdi
LIBS:gennum
LIBS:graphic
LIBS:hc11
LIBS:intel
LIBS:interface
LIBS:ir
LIBS:Lattice
LIBS:linear
LIBS:logo
LIBS:maxim
LIBS:memory
LIBS:microchip
LIBS:microchip_dspic33dsc
LIBS:microchip_pic10mcu
LIBS:microchip_pic12mcu
LIBS:microchip_pic16mcu
LIBS:microchip_pic18mcu
LIBS:microchip_pic32mcu
LIBS:microcontrollers
LIBS:motor_drivers
LIBS:motorola
LIBS:msp430
LIBS:nordicsemi
LIBS:nxp_armmcu
LIBS:onsemi
LIBS:opto
LIBS:Oscillators
LIBS:philips
LIBS:power
LIBS:powerint
LIBS:Power_Management
LIBS:references
LIBS:regul
LIBS:relays
LIBS:rfcom
LIBS:sensors
LIBS:silabs
LIBS:siliconi
LIBS:stm8
LIBS:stm32
LIBS:supertex
LIBS:switches
LIBS:texas
LIBS:transf
LIBS:transistors
LIBS:ttl_ieee
LIBS:valves
LIBS:video
LIBS:w_analog
LIBS:w_connectors
LIBS:w_device
LIBS:w_logic
LIBS:w_memory
LIBS:w_microcontrollers
LIBS:w_opto
LIBS:Worldsemi
LIBS:w_relay
LIBS:w_rtx
LIBS:w_transistor
LIBS:w_vacuum
LIBS:Xicor
LIBS:xilinx
LIBS:Zilog
LIBS:V_AMP-cache
EELAYER 25 0
EELAYER END
$Descr User 8908 6299
encoding utf-8
Sheet 1 1
Title "10x to 100x Precision Pre-Amplifier for Generic Sensors "
Date "2017-12-18"
Rev "1"
Comp "LAPMA - IF/UFRGS"
Comment1 "All resistors are 1/8W, except R16 and R17, 1W. The RX resistor is an optional attenuator"
Comment2 "There's a saturation indicator for output higher than 5V"
Comment3 "The gain adjust must be set for a range in 0 to 5V output voltage"
Comment4 "Designed by Alisson Claudino"
$EndDescr
$Comp
L BNC P1
U 1 1 5A26C4F0
P 1650 3000
F 0 "P1" H 1800 2850 50  0000 C CNN
F 1 "INPUT" H 1650 3150 50  0000 C CNN
F 2 "Connectors:bnc-ci" H 1650 3000 50  0001 C CNN
F 3 "" H 1650 3000 50  0000 C CNN
	1    1650 3000
	-1   0    0    -1  
$EndComp
$Comp
L R R1
U 1 1 5A26C581
P 2050 3250
F 0 "R1" V 2130 3250 50  0000 C CNN
F 1 "100k" V 2050 3250 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 1980 3250 50  0001 C CNN
F 3 "" H 2050 3250 50  0000 C CNN
	1    2050 3250
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 5A26C5A4
P 2250 3000
F 0 "R2" V 2330 3000 50  0000 C CNN
F 1 "1k" V 2250 3000 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 2180 3000 50  0001 C CNN
F 3 "" H 2250 3000 50  0000 C CNN
	1    2250 3000
	0    1    1    0   
$EndComp
$Comp
L ZENERsmall D1
U 1 1 5A26C65F
P 2450 3150
F 0 "D1" H 2400 3250 50  0000 C CNN
F 1 "5V1" H 2400 3050 50  0000 C CNN
F 2 "Diodes_THT:D_DO-41_SOD81_P7.62mm_Horizontal" H 2450 3150 50  0001 C CNN
F 3 "" H 2450 3150 50  0000 C CNN
	1    2450 3150
	0    -1   -1   0   
$EndComp
$Comp
L ZENERsmall D2
U 1 1 5A26C6AA
P 2450 3400
F 0 "D2" H 2500 3500 50  0000 C CNN
F 1 "5V1" H 2500 3300 50  0000 C CNN
F 2 "Diodes_THT:D_DO-41_SOD81_P7.62mm_Horizontal" H 2450 3400 50  0001 C CNN
F 3 "" H 2450 3400 50  0000 C CNN
	1    2450 3400
	0    1    1    0   
$EndComp
$Comp
L GND #PWR01
U 1 1 5A26C6D2
P 2450 3550
F 0 "#PWR01" H 2450 3300 50  0001 C CNN
F 1 "GND" H 2450 3400 50  0000 C CNN
F 2 "" H 2450 3550 50  0000 C CNN
F 3 "" H 2450 3550 50  0000 C CNN
	1    2450 3550
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 5A26C721
P 2850 3300
F 0 "C1" H 2875 3400 50  0000 L CNN
F 1 "470n" H 2875 3200 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 2888 3150 50  0001 C CNN
F 3 "" H 2850 3300 50  0000 C CNN
	1    2850 3300
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 5A26C746
P 2650 3000
F 0 "R3" V 2730 3000 50  0000 C CNN
F 1 "22k" V 2650 3000 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 2580 3000 50  0001 C CNN
F 3 "" H 2650 3000 50  0000 C CNN
	1    2650 3000
	0    1    1    0   
$EndComp
$Comp
L GND #PWR02
U 1 1 5A26C9C4
P 2050 3550
F 0 "#PWR02" H 2050 3300 50  0001 C CNN
F 1 "GND" H 2050 3400 50  0000 C CNN
F 2 "" H 2050 3550 50  0000 C CNN
F 3 "" H 2050 3550 50  0000 C CNN
	1    2050 3550
	1    0    0    -1  
$EndComp
$Comp
L OPA177 U1
U 1 1 5A26C7F5
P 3500 3100
F 0 "U1" H 3200 3300 50  0000 C CNN
F 1 "OPA277" H 3450 3100 50  0000 C CNN
F 2 "Housings_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3400 3000 50  0001 C CNN
F 3 "" H 3500 3100 50  0000 C CNN
	1    3500 3100
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 5A26C982
P 2850 3550
F 0 "#PWR03" H 2850 3300 50  0001 C CNN
F 1 "GND" H 2850 3400 50  0000 C CNN
F 2 "" H 2850 3550 50  0000 C CNN
F 3 "" H 2850 3550 50  0000 C CNN
	1    2850 3550
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 5A26CA07
P 2950 3950
F 0 "R4" V 3030 3950 50  0000 C CNN
F 1 "20k" V 2950 3950 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 2880 3950 50  0001 C CNN
F 3 "" H 2950 3950 50  0000 C CNN
	1    2950 3950
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 5A26CA58
P 3500 3850
F 0 "R5" V 3450 4000 50  0000 C CNN
F 1 "180k" V 3500 3850 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 3430 3850 50  0001 C CNN
F 3 "" H 3500 3850 50  0000 C CNN
	1    3500 3850
	0    1    1    0   
$EndComp
$Comp
L C C2
U 1 1 5A26CAE2
P 3500 4050
F 0 "C2" V 3550 4150 50  0000 L CNN
F 1 "220n" V 3550 3800 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 3538 3900 50  0001 C CNN
F 3 "" H 3500 4050 50  0000 C CNN
	1    3500 4050
	0    1    1    0   
$EndComp
$Comp
L C_Small C4
U 1 1 5A26CB62
P 3550 3450
F 0 "C4" V 3650 3500 50  0000 L CNN
F 1 "100n" V 3450 3350 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 3550 3450 50  0001 C CNN
F 3 "" H 3550 3450 50  0000 C CNN
	1    3550 3450
	0    1    1    0   
$EndComp
$Comp
L GND #PWR04
U 1 1 5A26CC13
P 3650 3450
F 0 "#PWR04" H 3650 3200 50  0001 C CNN
F 1 "GND" H 3650 3300 50  0000 C CNN
F 2 "" H 3650 3450 50  0000 C CNN
F 3 "" H 3650 3450 50  0000 C CNN
	1    3650 3450
	0    -1   -1   0   
$EndComp
NoConn ~ 3800 3200
NoConn ~ 3800 3000
NoConn ~ 3800 2900
$Comp
L R R10
U 1 1 5A26CE37
P 5050 3050
F 0 "R10" V 5130 3050 50  0000 C CNN
F 1 "10k" V 5050 3050 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 4980 3050 50  0001 C CNN
F 3 "" H 5050 3050 50  0000 C CNN
	1    5050 3050
	0    1    1    0   
$EndComp
$Comp
L C C7
U 1 1 5A26CE98
P 5250 3250
F 0 "C7" H 5150 3350 50  0000 L CNN
F 1 "220n" H 5300 3350 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 5288 3100 50  0001 C CNN
F 3 "" H 5250 3250 50  0000 C CNN
	1    5250 3250
	-1   0    0    1   
$EndComp
$Comp
L R R11
U 1 1 5A26D0A3
P 5550 3250
F 0 "R11" V 5630 3250 50  0000 C CNN
F 1 "RX" V 5550 3250 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 5480 3250 50  0001 C CNN
F 3 "" H 5550 3250 50  0000 C CNN
	1    5550 3250
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR05
U 1 1 5A26D18D
P 5400 3500
F 0 "#PWR05" H 5400 3250 50  0001 C CNN
F 1 "GND" H 5400 3350 50  0000 C CNN
F 2 "" H 5400 3500 50  0000 C CNN
F 3 "" H 5400 3500 50  0000 C CNN
	1    5400 3500
	1    0    0    -1  
$EndComp
$Comp
L R R13
U 1 1 5A26D32E
P 6200 3850
F 0 "R13" V 6250 3700 50  0000 C CNN
F 1 "27k" V 6200 3850 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 6130 3850 50  0001 C CNN
F 3 "" H 6200 3850 50  0000 C CNN
	1    6200 3850
	0    -1   -1   0   
$EndComp
$Comp
L C_Small C8
U 1 1 5A26D3BD
P 6200 3500
F 0 "C8" V 6100 3550 50  0000 L CNN
F 1 "100n" V 6300 3450 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 6200 3500 50  0001 C CNN
F 3 "" H 6200 3500 50  0000 C CNN
	1    6200 3500
	0    1    1    0   
$EndComp
$Comp
L GND #PWR06
U 1 1 5A26D547
P 6300 3500
F 0 "#PWR06" H 6300 3250 50  0001 C CNN
F 1 "GND" H 6300 3350 50  0000 C CNN
F 2 "" H 6300 3500 50  0000 C CNN
F 3 "" H 6300 3500 50  0000 C CNN
	1    6300 3500
	0    -1   -1   0   
$EndComp
$Comp
L C C9
U 1 1 5A26D71B
P 6200 4050
F 0 "C9" V 6150 3850 50  0000 L CNN
F 1 "220n" V 6150 4150 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 6238 3900 50  0001 C CNN
F 3 "" H 6200 4050 50  0000 C CNN
	1    6200 4050
	0    -1   -1   0   
$EndComp
$Comp
L R R12
U 1 1 5A26E247
P 5550 3950
F 0 "R12" V 5630 3950 50  0000 C CNN
F 1 "2k7" V 5550 3950 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 5480 3950 50  0001 C CNN
F 3 "" H 5550 3950 50  0000 C CNN
	1    5550 3950
	0    1    1    0   
$EndComp
$Comp
L POT RV1
U 1 1 5A26E36E
P 5200 3950
F 0 "RV1" H 5200 3870 50  0000 C CNN
F 1 "50k" H 5200 3950 50  0000 C CNN
F 2 "Potentiometers:Potentiometer_Alps_RK163_Single_Vertical" H 5200 3950 50  0001 C CNN
F 3 "" H 5200 3950 50  0000 C CNN
	1    5200 3950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR07
U 1 1 5A26E5FD
P 4700 3950
F 0 "#PWR07" H 4700 3700 50  0001 C CNN
F 1 "GND" H 4700 3800 50  0000 C CNN
F 2 "" H 4700 3950 50  0000 C CNN
F 3 "" H 4700 3950 50  0000 C CNN
	1    4700 3950
	0    1    1    0   
$EndComp
$Comp
L CONN_01X02 P2
U 1 1 5A26E467
P 4850 3650
F 0 "P2" H 4850 3800 50  0000 C CNN
F 1 "GAIN_ADJ" V 4950 3650 50  0000 C CNN
F 2 "w_pin_strip:pin_strip_2mm_2" H 4850 3650 50  0001 C CNN
F 3 "" H 4850 3650 50  0000 C CNN
	1    4850 3650
	0    1    -1   0   
$EndComp
$Comp
L R R14
U 1 1 5A26E913
P 6800 3150
F 0 "R14" V 6880 3150 50  0000 C CNN
F 1 "100" V 6800 3150 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 6730 3150 50  0001 C CNN
F 3 "" H 6800 3150 50  0000 C CNN
	1    6800 3150
	0    1    1    0   
$EndComp
$Comp
L ZENERsmall D4
U 1 1 5A26EA1B
P 7000 3300
F 0 "D4" H 7050 3200 50  0000 C CNN
F 1 "5V1" H 7000 3400 50  0000 C CNN
F 2 "Diodes_THT:D_DO-41_SOD81_P7.62mm_Horizontal" H 7000 3300 50  0001 C CNN
F 3 "" H 7000 3300 50  0000 C CNN
	1    7000 3300
	0    1    1    0   
$EndComp
$Comp
L GND #PWR08
U 1 1 5A26EC3A
P 7000 3500
F 0 "#PWR08" H 7000 3250 50  0001 C CNN
F 1 "GND" H 7000 3350 50  0000 C CNN
F 2 "" H 7000 3500 50  0000 C CNN
F 3 "" H 7000 3500 50  0000 C CNN
	1    7000 3500
	1    0    0    -1  
$EndComp
$Comp
L BNC P3
U 1 1 5A26ED35
P 7500 3150
F 0 "P3" H 7600 3000 50  0000 C CNN
F 1 "OUTPUT (0-5V)" H 7500 3300 50  0000 C CNN
F 2 "Connectors:bnc-ci" H 7500 3150 50  0001 C CNN
F 3 "" H 7500 3150 50  0000 C CNN
	1    7500 3150
	1    0    0    -1  
$EndComp
$Comp
L +8V #PWR09
U 1 1 5A26F5A2
P 3400 2700
F 0 "#PWR09" H 3400 2550 50  0001 C CNN
F 1 "+8V" H 3400 2840 50  0000 C CNN
F 2 "" H 3400 2700 50  0000 C CNN
F 3 "" H 3400 2700 50  0000 C CNN
	1    3400 2700
	1    0    0    -1  
$EndComp
$Comp
L -8V #PWR7
U 1 1 5A26F61A
P 3400 3500
F 0 "#PWR7" H 3400 3600 50  0001 C CNN
F 1 "-8V" H 3400 3650 50  0000 C CNN
F 2 "" H 3400 3500 50  0000 C CNN
F 3 "" H 3400 3500 50  0000 C CNN
	1    3400 3500
	-1   0    0    1   
$EndComp
$Comp
L +8V #PWR010
U 1 1 5A26F7A6
P 6050 2850
F 0 "#PWR010" H 6050 2700 50  0001 C CNN
F 1 "+8V" H 6050 2990 50  0000 C CNN
F 2 "" H 6050 2850 50  0000 C CNN
F 3 "" H 6050 2850 50  0000 C CNN
	1    6050 2850
	1    0    0    -1  
$EndComp
$Comp
L -8V #PWR22
U 1 1 5A26F7FC
P 6050 3550
F 0 "#PWR22" H 6050 3650 50  0001 C CNN
F 1 "-8V" H 6050 3700 50  0000 C CNN
F 2 "" H 6050 3550 50  0000 C CNN
F 3 "" H 6050 3550 50  0000 C CNN
	1    6050 3550
	-1   0    0    1   
$EndComp
$Comp
L LM393 U2
U 1 1 5A26F9BB
P 5350 1800
F 0 "U2" H 5500 1950 50  0000 C CNN
F 1 "LM393" H 5600 1650 50  0000 C CNN
F 2 "Housings_DIP:DIP-8_W7.62mm_Socket_LongPads" H 5350 1800 50  0001 C CNN
F 3 "" H 5350 1800 50  0000 C CNN
	1    5350 1800
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 5A2700C8
P 4950 2100
F 0 "R8" V 5030 2100 50  0000 C CNN
F 1 "2k7" V 4950 2100 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 4880 2100 50  0001 C CNN
F 3 "" H 4950 2100 50  0000 C CNN
	1    4950 2100
	-1   0    0    -1  
$EndComp
$Comp
L C_Small C5
U 1 1 5A270604
P 5400 2200
F 0 "C5" V 5500 2200 50  0000 L CNN
F 1 "100n" V 5300 2100 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 5400 2200 50  0001 C CNN
F 3 "" H 5400 2200 50  0000 C CNN
	1    5400 2200
	0    1    -1   0   
$EndComp
$Comp
L GND #PWR011
U 1 1 5A27060A
P 5500 2200
F 0 "#PWR011" H 5500 1950 50  0001 C CNN
F 1 "GND" H 5500 2050 50  0000 C CNN
F 2 "" H 5500 2200 50  0000 C CNN
F 3 "" H 5500 2200 50  0000 C CNN
	1    5500 2200
	0    -1   1    0   
$EndComp
$Comp
L -8V #PWR17
U 1 1 5A270612
P 5250 2250
F 0 "#PWR17" H 5250 2350 50  0001 C CNN
F 1 "-8V" H 5250 2400 50  0000 C CNN
F 2 "" H 5250 2250 50  0000 C CNN
F 3 "" H 5250 2250 50  0000 C CNN
	1    5250 2250
	1    0    0    1   
$EndComp
NoConn ~ 6450 2950
NoConn ~ 6450 3250
$Comp
L C_Small C3
U 1 1 5A27161E
P 3550 2750
F 0 "C3" V 3600 2800 50  0000 L CNN
F 1 "100n" V 3450 2700 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 3550 2750 50  0001 C CNN
F 3 "" H 3550 2750 50  0000 C CNN
	1    3550 2750
	0    1    1    0   
$EndComp
$Comp
L GND #PWR012
U 1 1 5A2718ED
P 3650 2750
F 0 "#PWR012" H 3650 2500 50  0001 C CNN
F 1 "GND" H 3650 2600 50  0000 C CNN
F 2 "" H 3650 2750 50  0000 C CNN
F 3 "" H 3650 2750 50  0000 C CNN
	1    3650 2750
	0    -1   -1   0   
$EndComp
$Comp
L R R6
U 1 1 5A2721C9
P 4650 1900
F 0 "R6" V 4730 1900 50  0000 C CNN
F 1 "3k3" V 4650 1900 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 4580 1900 50  0001 C CNN
F 3 "" H 4650 1900 50  0000 C CNN
	1    4650 1900
	1    0    0    1   
$EndComp
$Comp
L R R7
U 1 1 5A27226A
P 4650 1500
F 0 "R7" V 4730 1500 50  0000 C CNN
F 1 "5k6" V 4650 1500 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 4580 1500 50  0001 C CNN
F 3 "" H 4650 1500 50  0000 C CNN
	1    4650 1500
	1    0    0    1   
$EndComp
$Comp
L +8V #PWR013
U 1 1 5A272681
P 5250 1400
F 0 "#PWR013" H 5250 1250 50  0001 C CNN
F 1 "+8V" H 5250 1540 50  0000 C CNN
F 2 "" H 5250 1400 50  0000 C CNN
F 3 "" H 5250 1400 50  0000 C CNN
	1    5250 1400
	1    0    0    -1  
$EndComp
$Comp
L C_Small C6
U 1 1 5A272687
P 5400 1450
F 0 "C6" V 5450 1500 50  0000 L CNN
F 1 "100n" V 5300 1400 50  0000 L CNN
F 2 "Capacitors_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm" H 5400 1450 50  0001 C CNN
F 3 "" H 5400 1450 50  0000 C CNN
	1    5400 1450
	0    1    1    0   
$EndComp
$Comp
L GND #PWR014
U 1 1 5A272690
P 5500 1450
F 0 "#PWR014" H 5500 1200 50  0001 C CNN
F 1 "GND" H 5500 1300 50  0000 C CNN
F 2 "" H 5500 1450 50  0000 C CNN
F 3 "" H 5500 1450 50  0000 C CNN
	1    5500 1450
	0    -1   -1   0   
$EndComp
$Comp
L +8V #PWR015
U 1 1 5A272853
P 4650 2050
F 0 "#PWR015" H 4650 1900 50  0001 C CNN
F 1 "+8V" H 4650 2190 50  0000 C CNN
F 2 "" H 4650 2050 50  0000 C CNN
F 3 "" H 4650 2050 50  0000 C CNN
	1    4650 2050
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR016
U 1 1 5A2728C1
P 4650 1350
F 0 "#PWR016" H 4650 1100 50  0001 C CNN
F 1 "GND" H 4650 1200 50  0000 C CNN
F 2 "" H 4650 1350 50  0000 C CNN
F 3 "" H 4650 1350 50  0000 C CNN
	1    4650 1350
	-1   0    0    1   
$EndComp
$Comp
L R R9
U 1 1 5A272BF7
P 5100 1050
F 0 "R9" V 5180 1050 50  0000 C CNN
F 1 "27k" V 5100 1050 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 5030 1050 50  0001 C CNN
F 3 "" H 5100 1050 50  0000 C CNN
	1    5100 1050
	0    1    -1   0   
$EndComp
$Comp
L D_Small D3
U 1 1 5A272D8D
P 5450 1050
F 0 "D3" H 5400 1130 50  0000 L CNN
F 1 "1N4148" H 5300 970 50  0000 L CNN
F 2 "Diodes_THT:D_DO-35_SOD27_P7.62mm_Horizontal" V 5450 1050 50  0001 C CNN
F 3 "" V 5450 1050 50  0000 C CNN
	1    5450 1050
	-1   0    0    1   
$EndComp
$Comp
L LED D5
U 1 1 5A27312A
P 7650 2000
F 0 "D5" H 7650 1900 50  0000 C CNN
F 1 "SATURATION_LED" H 7650 2150 50  0000 C CNN
F 2 "LEDs:LED_D5.0mm" H 7650 2000 50  0001 C CNN
F 3 "" H 7650 2000 50  0000 C CNN
	1    7650 2000
	0    1    1    0   
$EndComp
$Comp
L R R15
U 1 1 5A2731DD
P 7450 2250
F 0 "R15" V 7530 2250 50  0000 C CNN
F 1 "2k7" V 7450 2250 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 7380 2250 50  0001 C CNN
F 3 "" H 7450 2250 50  0000 C CNN
	1    7450 2250
	0    -1   1    0   
$EndComp
$Comp
L +8V #PWR017
U 1 1 5A2735C3
P 7250 2300
F 0 "#PWR017" H 7250 2150 50  0001 C CNN
F 1 "+8V" H 7250 2440 50  0000 C CNN
F 2 "" H 7250 2300 50  0000 C CNN
F 3 "" H 7250 2300 50  0000 C CNN
	1    7250 2300
	-1   0    0    1   
$EndComp
$Comp
L R R16
U 1 1 5A275E4B
P 3350 1250
F 0 "R16" V 3430 1250 50  0000 C CNN
F 1 "10" V 3350 1250 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 3280 1250 50  0001 C CNN
F 3 "" H 3350 1250 50  0000 C CNN
	1    3350 1250
	0    1    1    0   
$EndComp
$Comp
L R R17
U 1 1 5A275FB0
P 3350 1550
F 0 "R17" V 3430 1550 50  0000 C CNN
F 1 "10" V 3350 1550 50  0000 C CNN
F 2 "w_pth_resistors:RC03" V 3280 1550 50  0001 C CNN
F 3 "" H 3350 1550 50  0000 C CNN
	1    3350 1550
	0    1    1    0   
$EndComp
$Comp
L CP_Small C10
U 1 1 5A276093
P 3600 1700
F 0 "C10" H 3610 1770 50  0000 L CNN
F 1 "22u" H 3610 1620 50  0000 L CNN
F 2 "Capacitors_THT:CP_Radial_D5.0mm_P2.50mm" H 3600 1700 50  0001 C CNN
F 3 "" H 3600 1700 50  0000 C CNN
	1    3600 1700
	1    0    0    1   
$EndComp
$Comp
L CP_Small C11
U 1 1 5A276151
P 4200 1700
F 0 "C11" H 4210 1770 50  0000 L CNN
F 1 "22u" H 4210 1620 50  0000 L CNN
F 2 "Capacitors_THT:CP_Radial_D5.0mm_P2.50mm" H 4200 1700 50  0001 C CNN
F 3 "" H 4200 1700 50  0000 C CNN
	1    4200 1700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR018
U 1 1 5A276C0A
P 3600 1900
F 0 "#PWR018" H 3600 1650 50  0001 C CNN
F 1 "GND" H 3600 1750 50  0000 C CNN
F 2 "" H 3600 1900 50  0000 C CNN
F 3 "" H 3600 1900 50  0000 C CNN
	1    3600 1900
	1    0    0    -1  
$EndComp
$Comp
L +8V #PWR019
U 1 1 5A2771AF
P 4200 1200
F 0 "#PWR019" H 4200 1050 50  0001 C CNN
F 1 "+8V" H 4200 1340 50  0000 C CNN
F 2 "" H 4200 1200 50  0000 C CNN
F 3 "" H 4200 1200 50  0000 C CNN
	1    4200 1200
	1    0    0    -1  
$EndComp
$Comp
L -8V #PWR8
U 1 1 5A2772C0
P 3600 1500
F 0 "#PWR8" H 3600 1600 50  0001 C CNN
F 1 "-8V" H 3600 1650 50  0000 C CNN
F 2 "" H 3600 1500 50  0000 C CNN
F 3 "" H 3600 1500 50  0000 C CNN
	1    3600 1500
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG020
U 1 1 5A2778A9
P 3600 1150
F 0 "#FLG020" H 3600 1245 50  0001 C CNN
F 1 "PWR_FLAG" H 3600 1330 50  0000 C CNN
F 2 "" H 3600 1150 50  0000 C CNN
F 3 "" H 3600 1150 50  0000 C CNN
	1    3600 1150
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG021
U 1 1 5A277BFD
P 3900 1500
F 0 "#FLG021" H 3900 1595 50  0001 C CNN
F 1 "PWR_FLAG" H 3900 1680 50  0000 C CNN
F 2 "" H 3900 1500 50  0000 C CNN
F 3 "" H 3900 1500 50  0000 C CNN
	1    3900 1500
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG022
U 1 1 5A278544
P 3900 1900
F 0 "#FLG022" H 3900 1995 50  0001 C CNN
F 1 "PWR_FLAG" H 3900 2080 50  0000 C CNN
F 2 "" H 3900 1900 50  0000 C CNN
F 3 "" H 3900 1900 50  0000 C CNN
	1    3900 1900
	1    0    0    1   
$EndComp
$Comp
L GND #PWR023
U 1 1 5A278E18
P 2800 3950
F 0 "#PWR023" H 2800 3700 50  0001 C CNN
F 1 "GND" H 2800 3800 50  0000 C CNN
F 2 "" H 2800 3950 50  0000 C CNN
F 3 "" H 2800 3950 50  0000 C CNN
	1    2800 3950
	0    1    1    0   
$EndComp
Text Notes 3000 2300 0    60   ~ 0
POWER - Symmetric 8V\n
Text Notes 2400 4300 0    60   ~ 0
10x 1st Stage Amplifier\n
Text Notes 5500 4300 0    60   ~ 0
1-10x 2nd Stage Amplifier
Text Notes 5900 2400 0    60   ~ 0
Saturation Indicator
Text Notes 4500 1750 0    60   ~ 0
5V
Wire Wire Line
	2400 3000 2500 3000
Wire Wire Line
	2450 3000 2450 3050
Connection ~ 2450 3000
Wire Wire Line
	2050 3100 2050 3000
Wire Wire Line
	1800 3000 2100 3000
Connection ~ 2050 3000
Wire Wire Line
	1650 3500 2050 3500
Wire Wire Line
	2050 3400 2050 3550
Connection ~ 2050 3500
Wire Wire Line
	2800 3000 3200 3000
Wire Wire Line
	2850 3000 2850 3150
Wire Wire Line
	2850 3550 2850 3450
Connection ~ 2850 3000
Wire Wire Line
	3400 3400 3400 3500
Wire Wire Line
	3400 3450 3450 3450
Wire Wire Line
	3350 3850 3300 3850
Wire Wire Line
	3300 3850 3300 4050
Wire Wire Line
	3300 4050 3350 4050
Wire Wire Line
	3100 3950 3300 3950
Wire Wire Line
	3150 3200 3150 3950
Wire Wire Line
	3150 3200 3200 3200
Connection ~ 3300 3950
Wire Wire Line
	3650 3850 3700 3850
Wire Wire Line
	3700 3850 3700 4050
Wire Wire Line
	3700 4050 3650 4050
Wire Wire Line
	3950 3950 3700 3950
Wire Wire Line
	3950 3100 3950 3950
Wire Wire Line
	3800 3100 4050 3100
Connection ~ 3700 3950
Wire Wire Line
	5200 3050 5850 3050
Wire Wire Line
	5250 3050 5250 3100
Wire Wire Line
	5550 3050 5550 3100
Connection ~ 5250 3050
Wire Wire Line
	5250 3400 5250 3450
Wire Wire Line
	5250 3450 5550 3450
Wire Wire Line
	5550 3450 5550 3400
Wire Wire Line
	5400 3500 5400 3450
Connection ~ 5400 3450
Connection ~ 3950 3100
Connection ~ 5550 3050
Wire Wire Line
	6050 3450 6050 3550
Wire Wire Line
	6050 3500 6100 3500
Wire Wire Line
	5800 3250 5800 3950
Wire Wire Line
	5800 3250 5850 3250
Wire Wire Line
	6000 3850 6050 3850
Wire Wire Line
	6400 3850 6350 3850
Wire Wire Line
	6000 3850 6000 4050
Wire Wire Line
	6000 4050 6050 4050
Wire Wire Line
	6400 4050 6350 4050
Wire Wire Line
	6400 3850 6400 4050
Connection ~ 6400 3950
Wire Wire Line
	5700 3950 6000 3950
Connection ~ 6000 3950
Connection ~ 5800 3950
Wire Wire Line
	4900 3950 5050 3950
Wire Wire Line
	5000 3950 5000 3750
Wire Wire Line
	5000 3750 5200 3750
Wire Wire Line
	5200 3750 5200 3800
Wire Wire Line
	5350 3950 5400 3950
Connection ~ 5000 3950
Wire Wire Line
	6550 2950 6550 3950
Wire Wire Line
	6950 3150 7350 3150
Wire Wire Line
	7000 3150 7000 3200
Connection ~ 7000 3150
Wire Wire Line
	1650 3200 1650 3500
Wire Wire Line
	7000 3400 7000 3500
Wire Wire Line
	7000 3450 7500 3450
Wire Wire Line
	7500 3450 7500 3350
Connection ~ 7000 3450
Connection ~ 3400 3450
Connection ~ 6050 3500
Wire Wire Line
	4900 3850 4900 3950
Wire Wire Line
	4800 3850 4800 3950
Wire Wire Line
	4800 3950 4700 3950
Wire Wire Line
	4950 1950 4950 1900
Wire Wire Line
	4950 1900 5050 1900
Wire Wire Line
	5250 2200 5300 2200
Connection ~ 5250 2200
Wire Wire Line
	5250 2100 5250 2250
Wire Wire Line
	3450 2750 3400 2750
Wire Wire Line
	3400 2700 3400 2800
Connection ~ 3400 2750
Wire Wire Line
	5300 1450 5250 1450
Wire Wire Line
	5250 1400 5250 1500
Connection ~ 5250 1450
Wire Wire Line
	4650 1650 4650 1750
Wire Wire Line
	4650 1700 5050 1700
Connection ~ 4650 1700
Wire Wire Line
	5550 1050 5750 1050
Wire Wire Line
	5750 1050 5750 1800
Wire Wire Line
	5650 1800 7650 1800
Wire Wire Line
	5250 1050 5350 1050
Wire Wire Line
	4950 1050 4900 1050
Wire Wire Line
	4900 1050 4900 1700
Connection ~ 4900 1700
Connection ~ 5750 1800
Wire Wire Line
	7650 2200 7650 2250
Wire Wire Line
	7650 2250 7600 2250
Wire Wire Line
	7250 2300 7250 2250
Wire Wire Line
	7250 2250 7300 2250
Wire Wire Line
	3600 1500 3600 1600
Wire Wire Line
	3500 1550 3900 1550
Wire Wire Line
	4200 1200 4200 1600
Wire Wire Line
	3500 1250 4200 1250
Wire Wire Line
	3600 1800 3600 1900
Wire Wire Line
	3150 1850 4200 1850
Wire Wire Line
	4200 1850 4200 1800
Connection ~ 3600 1850
Connection ~ 4200 1250
Wire Wire Line
	3600 1150 3600 1250
Connection ~ 3600 1250
Wire Wire Line
	3900 1550 3900 1500
Connection ~ 3600 1550
Wire Wire Line
	3900 1900 3900 1850
Connection ~ 3900 1850
Connection ~ 3150 3950
Wire Notes Line
	2600 2400 4400 2400
Wire Notes Line
	4400 2400 4400 850 
Wire Notes Line
	4400 850  2600 850 
Wire Notes Line
	1400 2450 4400 2450
Wire Notes Line
	1400 4350 4400 4350
Wire Notes Line
	4450 2650 4450 4350
Wire Notes Line
	4450 4350 7900 4350
Wire Notes Line
	4450 2650 7900 2650
Wire Notes Line
	4450 2600 7900 2600
Wire Notes Line
	7900 2600 7900 700 
Wire Notes Line
	7900 700  4450 700 
Wire Notes Line
	4450 700  4450 2600
Wire Wire Line
	2450 3250 2450 3300
Wire Wire Line
	2450 3550 2450 3500
Text GLabel 4050 3100 2    60   Output ~ 0
OUT1
Wire Notes Line
	4400 4350 4400 2450
Wire Notes Line
	1400 2450 1400 4350
Text GLabel 4900 3050 0    60   Input ~ 0
OUT1
Text GLabel 6700 2950 2    60   Output ~ 0
OUT2
Wire Notes Line
	7900 2650 7900 4350
Text GLabel 4900 2400 0    60   Input ~ 0
OUT2
Wire Wire Line
	4900 2400 4950 2400
Wire Wire Line
	4950 2400 4950 2250
Connection ~ 1700 1850
Wire Wire Line
	1700 1850 1800 1850
Wire Wire Line
	1700 1650 1700 1900
Wire Wire Line
	1800 1650 1700 1650
NoConn ~ 2400 1750
NoConn ~ 2000 2050
NoConn ~ 2000 1450
$Comp
L GND #PWR024
U 1 1 5A274D3B
P 1700 1900
F 0 "#PWR024" H 1700 1650 50  0001 C CNN
F 1 "GND" H 1700 1750 50  0000 C CNN
F 2 "" H 1700 1900 50  0000 C CNN
F 3 "" H 1700 1900 50  0000 C CNN
	1    1700 1900
	1    0    0    -1  
$EndComp
$Comp
L LM393 U2
U 2 1 5A26FA9A
P 2100 1750
F 0 "U2" H 2250 1900 50  0000 C CNN
F 1 "LM393" H 2350 1600 50  0000 C CNN
F 2 "Housings_DIP:DIP-8_W7.62mm_Socket_LongPads" H 2100 1750 50  0001 C CNN
F 3 "" H 2100 1750 50  0000 C CNN
	2    2100 1750
	1    0    0    -1  
$EndComp
NoConn ~ 6450 3050
Wire Wire Line
	6450 3150 6650 3150
Connection ~ 6550 3150
Wire Wire Line
	6550 2950 6700 2950
Wire Wire Line
	6550 3950 6400 3950
Text Notes 3250 1200 0    60   ~ 0
1W
Text Notes 3250 1500 0    60   ~ 0
1W
$Comp
L CONN_01X03 P4
U 1 1 5A37B0B0
P 2900 1550
F 0 "P4" H 2900 1750 50  0000 C CNN
F 1 "POWER" H 2800 1350 50  0000 C CNN
F 2 "Connectors:bornier3" H 2900 1550 50  0001 C CNN
F 3 "" H 2900 1550 50  0000 C CNN
	1    2900 1550
	-1   0    0    1   
$EndComp
Wire Wire Line
	3100 1550 3200 1550
Wire Wire Line
	3100 1450 3150 1450
Wire Wire Line
	3150 1450 3150 1250
Wire Wire Line
	3150 1250 3200 1250
Wire Wire Line
	3100 1650 3150 1650
Wire Wire Line
	3150 1650 3150 1850
Text Notes 2650 1700 0    60   ~ 0
GND
Text Notes 2700 1500 0    60   ~ 0
+8
Text Notes 2700 1600 0    60   ~ 0
-8\n
Wire Notes Line
	2600 850  2600 2400
$Comp
L OPA177 U3
U 1 1 5A26D235
P 6150 3150
F 0 "U3" H 5850 3350 50  0000 C CNN
F 1 "OPA277" H 6100 3150 50  0000 C CNN
F 2 "Housings_DIP:DIP-8_W7.62mm_Socket_LongPads" H 6050 3050 50  0001 C CNN
F 3 "" H 6150 3150 50  0000 C CNN
	1    6150 3150
	1    0    0    -1  
$EndComp
$EndSCHEMATC