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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:I_AMP-cache
EELAYER 25 0
EELAYER END
$Descr User 8908 6299
encoding utf-8
Sheet 1 1
Title "Current Sensor for Materials Analysis"
Date "2017-12-15"
Rev "1"
Comp "LAPMA - UFRGS"
Comment1 "All resistors are 1/8W, except R1 and R2"
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 GND #PWR01
U 1 1 5A26D72D
P 1750 1950
F 0 "#PWR01" H 1750 1700 50  0001 C CNN
F 1 "GND" H 1750 1800 50  0000 C CNN
F 2 "" H 1750 1950 50  0000 C CNN
F 3 "" H 1750 1950 50  0000 C CNN
	1    1750 1950
	1    0    0    -1  
$EndComp
Text Notes 1550 1650 0    60   ~ 0
5W
Text Notes 1850 1650 0    60   ~ 0
5W
NoConn ~ 4150 3950
NoConn ~ 4150 3350
$Comp
L R R1
U 1 1 5A270FC5
P 1750 1700
F 0 "R1" V 1830 1700 50  0000 C CNN
F 1 "2R2" V 1750 1700 50  0000 C CNN
F 2 "" V 1680 1700 50  0000 C CNN
F 3 "" H 1750 1700 50  0000 C CNN
	1    1750 1700
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 5A270FC6
P 2050 1700
F 0 "R2" V 2130 1700 50  0000 C CNN
F 1 "2R2" V 2050 1700 50  0000 C CNN
F 2 "" V 1980 1700 50  0000 C CNN
F 3 "" H 2050 1700 50  0000 C CNN
	1    2050 1700
	1    0    0    -1  
$EndComp
$Comp
L R R5
U 1 1 5A270FC7
P 1600 3450
F 0 "R5" V 1680 3450 50  0000 C CNN
F 1 "20k" V 1600 3450 50  0000 C CNN
F 2 "" V 1530 3450 50  0000 C CNN
F 3 "" H 1600 3450 50  0000 C CNN
	1    1600 3450
	0    1    1    0   
$EndComp
$Comp
L GND #PWR02
U 1 1 5A270FC9
P 1750 1950
F 0 "#PWR02" H 1750 1700 50  0001 C CNN
F 1 "GND" H 1750 1800 50  0000 C CNN
F 2 "" H 1750 1950 50  0000 C CNN
F 3 "" H 1750 1950 50  0000 C CNN
	1    1750 1950
	1    0    0    -1  
$EndComp
$Comp
L D_Small D1
U 1 1 5A270FCC
P 2200 2800
F 0 "D1" H 2150 2880 50  0000 L CNN
F 1 "1n4148" H 2050 2720 50  0000 L CNN
F 2 "" V 2200 2800 50  0000 C CNN
F 3 "" V 2200 2800 50  0000 C CNN
	1    2200 2800
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 5A270FCD
P 2200 2600
F 0 "R6" V 2280 2600 50  0000 C CNN
F 1 "20k" V 2200 2600 50  0000 C CNN
F 2 "" V 2130 2600 50  0000 C CNN
F 3 "" H 2200 2600 50  0000 C CNN
	1    2200 2600
	0    1    -1   0   
$EndComp
$Comp
L GND #PWR03
U 1 1 5A270FCE
P 1800 3700
F 0 "#PWR03" H 1800 3450 50  0001 C CNN
F 1 "GND" H 1800 3550 50  0000 C CNN
F 2 "" H 1800 3700 50  0000 C CNN
F 3 "" H 1800 3700 50  0000 C CNN
	1    1800 3700
	1    0    0    -1  
$EndComp
Text Notes 1550 1650 0    60   ~ 0
5W
Text Notes 1850 1650 0    60   ~ 0
5W
NoConn ~ 4150 3950
NoConn ~ 4150 3350
$Comp
L R R14
U 1 1 5A270FD6
P 5400 1000
F 0 "R14" V 5480 1000 50  0000 C CNN
F 1 "10k" V 5400 1000 50  0000 C CNN
F 2 "" V 5330 1000 50  0000 C CNN
F 3 "" H 5400 1000 50  0000 C CNN
	1    5400 1000
	0    1    1    0   
$EndComp
$Comp
L C C8
U 1 1 5A270FD7
P 5600 1200
F 0 "C8" H 5625 1300 50  0000 L CNN
F 1 "220n" H 5400 1100 50  0000 L CNN
F 2 "" H 5638 1050 50  0000 C CNN
F 3 "" H 5600 1200 50  0000 C CNN
	1    5600 1200
	1    0    0    -1  
$EndComp
$Comp
L R R15
U 1 1 5A270FD8
P 5800 1200
F 0 "R15" V 5880 1200 50  0000 C CNN
F 1 "RX" V 5800 1200 50  0000 C CNN
F 2 "" V 5730 1200 50  0000 C CNN
F 3 "" H 5800 1200 50  0000 C CNN
	1    5800 1200
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR04
U 1 1 5A270FD9
P 5700 1450
F 0 "#PWR04" H 5700 1200 50  0001 C CNN
F 1 "GND" H 5700 1300 50  0000 C CNN
F 2 "" H 5700 1450 50  0000 C CNN
F 3 "" H 5700 1450 50  0000 C CNN
	1    5700 1450
	1    0    0    -1  
$EndComp
$Comp
L +8V #PWR05
U 1 1 5A270FDB
P 6400 800
F 0 "#PWR05" H 6400 650 50  0001 C CNN
F 1 "+8V" H 6400 940 50  0000 C CNN
F 2 "" H 6400 800 50  0000 C CNN
F 3 "" H 6400 800 50  0000 C CNN
	1    6400 800 
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR06
U 1 1 5A270FDD
P 3900 3800
F 0 "#PWR06" H 3900 3550 50  0001 C CNN
F 1 "GND" H 3900 3650 50  0000 C CNN
F 2 "" H 3900 3800 50  0000 C CNN
F 3 "" H 3900 3800 50  0000 C CNN
	1    3900 3800
	1    0    0    -1  
$EndComp
$Comp
L ZENERsmall D5
U 1 1 5A270FE1
P 7250 1250
F 0 "D5" H 7250 1350 50  0000 C CNN
F 1 "5V1" H 7250 1150 50  0000 C CNN
F 2 "" H 7250 1250 50  0000 C CNN
F 3 "" H 7250 1250 50  0000 C CNN
	1    7250 1250
	0    1    1    0   
$EndComp
$Comp
L OPA177 U3
U 1 1 5A270FDA
P 6500 1100
F 0 "U3" H 6500 900 50  0000 C CNN
F 1 "OPA277" H 6450 1100 50  0000 C CNN
F 2 "" H 6400 1000 50  0000 C CNN
F 3 "" H 6500 1100 50  0000 C CNN
	1    6500 1100
	1    0    0    -1  
$EndComp
$Comp
L CP C5
U 1 1 5A270FD3
P 3950 2900
F 0 "C5" V 4000 3000 50  0000 L CNN
F 1 "10u" V 3800 2850 50  0000 L CNN
F 2 "" H 3988 2750 50  0000 C CNN
F 3 "" H 3950 2900 50  0000 C CNN
	1    3950 2900
	0    1    1    0   
$EndComp
$Comp
L R R12
U 1 1 5A270FD4
P 3950 3100
F 0 "R12" V 4030 3100 50  0000 C CNN
F 1 "18k" V 3950 3100 50  0000 C CNN
F 2 "" V 3880 3100 50  0000 C CNN
F 3 "" H 3950 3100 50  0000 C CNN
	1    3950 3100
	0    1    1    0   
$EndComp
$Comp
L POT RV1
U 1 1 5A270FD5
P 4350 3100
F 0 "RV1" H 4350 3020 50  0000 C CNN
F 1 "5k" H 4350 3100 50  0000 C CNN
F 2 "" H 4350 3100 50  0000 C CNN
F 3 "" H 4350 3100 50  0000 C CNN
	1    4350 3100
	1    0    0    -1  
$EndComp
$Comp
L D_Small D2
U 1 1 5A270FCA
P 2650 3550
F 0 "D2" H 2600 3630 50  0000 L CNN
F 1 "1n4148" H 2500 3470 50  0000 L CNN
F 2 "" V 2650 3550 50  0000 C CNN
F 3 "" V 2650 3550 50  0000 C CNN
	1    2650 3550
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 5A270FCB
P 3150 3550
F 0 "R8" V 3230 3550 50  0000 C CNN
F 1 "10k" V 3150 3550 50  0000 C CNN
F 2 "" V 3080 3550 50  0000 C CNN
F 3 "" H 3150 3550 50  0000 C CNN
	1    3150 3550
	0    1    1    0   
$EndComp
$Comp
L GND #PWR07
U 1 1 5A270FD1
P 2300 3200
F 0 "#PWR07" H 2300 2950 50  0001 C CNN
F 1 "GND" H 2300 3050 50  0000 C CNN
F 2 "" H 2300 3200 50  0000 C CNN
F 3 "" H 2300 3200 50  0000 C CNN
	1    2300 3200
	0    -1   -1   0   
$EndComp
$Comp
L -8V #PWR18
U 1 1 5A270FDC
P 6400 1400
F 0 "#PWR18" H 6400 1500 50  0001 C CNN
F 1 "-8V" H 6400 1550 50  0000 C CNN
F 2 "" H 6400 1400 50  0000 C CNN
F 3 "" H 6400 1400 50  0000 C CNN
	1    6400 1400
	1    0    0    1   
$EndComp
$Comp
L R R18
U 1 1 5A270FDE
P 6450 1750
F 0 "R18" V 6530 1750 50  0000 C CNN
F 1 "27k" V 6450 1750 50  0000 C CNN
F 2 "" V 6380 1750 50  0000 C CNN
F 3 "" H 6450 1750 50  0000 C CNN
	1    6450 1750
	0    1    1    0   
$EndComp
$Comp
L C C9
U 1 1 5A270FDF
P 6450 2050
F 0 "C9" H 6475 2150 50  0000 L CNN
F 1 "220n" V 6500 1800 50  0000 L CNN
F 2 "" H 6488 1900 50  0000 C CNN
F 3 "" H 6450 2050 50  0000 C CNN
	1    6450 2050
	0    1    1    0   
$EndComp
$Comp
L GND #PWR08
U 1 1 5A270FE2
P 7250 1450
F 0 "#PWR08" H 7250 1200 50  0001 C CNN
F 1 "GND" H 7250 1300 50  0000 C CNN
F 2 "" H 7250 1450 50  0000 C CNN
F 3 "" H 7250 1450 50  0000 C CNN
	1    7250 1450
	1    0    0    -1  
$EndComp
$Comp
L R R19
U 1 1 5A270FE0
P 7050 1100
F 0 "R19" V 6950 1100 50  0000 C CNN
F 1 "100" V 7050 1100 50  0000 C CNN
F 2 "" V 6980 1100 50  0000 C CNN
F 3 "" H 7050 1100 50  0000 C CNN
	1    7050 1100
	0    1    1    0   
$EndComp
$Comp
L TL062 U1
U 2 1 5A270FD2
P 4250 3650
F 0 "U1" H 4200 3650 50  0000 L CNN
F 1 "TL062" H 4200 3500 50  0000 L CNN
F 2 "" H 4250 3650 50  0000 C CNN
F 3 "" H 4250 3650 50  0000 C CNN
	2    4250 3650
	1    0    0    1   
$EndComp
$Comp
L C_Small C2
U 1 1 5A270FCF
P 2200 3200
F 0 "C2" V 2300 3300 50  0000 L CNN
F 1 "100n" V 2100 3150 50  0000 L CNN
F 2 "" H 2200 3200 50  0000 C CNN
F 3 "" H 2200 3200 50  0000 C CNN
	1    2200 3200
	0    1    1    0   
$EndComp
$Comp
L -8V #PWR5
U 1 1 5A270FD0
P 2050 3150
F 0 "#PWR5" H 2050 3250 50  0001 C CNN
F 1 "-8V" H 2050 3300 50  0000 C CNN
F 2 "" H 2050 3150 50  0000 C CNN
F 3 "" H 2050 3150 50  0000 C CNN
	1    2050 3150
	1    0    0    -1  
$EndComp
$Comp
L BNC P1
U 1 1 5A270FC4
P 1100 1500
F 0 "P1" H 1250 1400 50  0000 C CNN
F 1 "INPUT" H 1100 1650 50  0000 C CNN
F 2 "" H 1100 1500 50  0000 C CNN
F 3 "" H 1100 1500 50  0000 C CNN
	1    1100 1500
	-1   0    0    -1  
$EndComp
$Comp
L BNC P6
U 1 1 5A270FE3
P 7800 1100
F 0 "P6" H 7950 1000 50  0000 C CNN
F 1 "OUTPUT (0-5V)" H 7800 1250 50  0000 C CNN
F 2 "" H 7800 1100 50  0000 C CNN
F 3 "" H 7800 1100 50  0000 C CNN
	1    7800 1100
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR09
U 1 1 5A2738F2
P 2300 3900
F 0 "#PWR09" H 2300 3650 50  0001 C CNN
F 1 "GND" H 2300 3750 50  0000 C CNN
F 2 "" H 2300 3900 50  0000 C CNN
F 3 "" H 2300 3900 50  0000 C CNN
	1    2300 3900
	0    -1   -1   0   
$EndComp
$Comp
L C_Small C3
U 1 1 5A2738F8
P 2200 3900
F 0 "C3" V 2300 4000 50  0000 L CNN
F 1 "100n" V 2100 3850 50  0000 L CNN
F 2 "" H 2200 3900 50  0000 C CNN
F 3 "" H 2200 3900 50  0000 C CNN
	1    2200 3900
	0    1    1    0   
$EndComp
$Comp
L TL062 U1
U 1 1 5A270FC8
P 2150 3550
F 0 "U1" H 2100 3550 50  0000 L CNN
F 1 "TL062" H 2200 3450 50  0000 L CNN
F 2 "" H 2150 3550 50  0000 C CNN
F 3 "" H 2150 3550 50  0000 C CNN
	1    2150 3550
	1    0    0    1   
$EndComp
$Comp
L +8V #PWR010
U 1 1 5A273BD0
P 2050 3950
F 0 "#PWR010" H 2050 3800 50  0001 C CNN
F 1 "+8V" H 2050 4090 50  0000 C CNN
F 2 "" H 2050 3950 50  0000 C CNN
F 3 "" H 2050 3950 50  0000 C CNN
	1    2050 3950
	-1   0    0    1   
$EndComp
$Comp
L LM393 U2
U 1 1 5A27494E
P 6600 3200
F 0 "U2" H 6650 3200 50  0000 C CNN
F 1 "LM393" H 6850 3050 50  0000 C CNN
F 2 "" H 6600 3200 50  0000 C CNN
F 3 "" H 6600 3200 50  0000 C CNN
	1    6600 3200
	1    0    0    1   
$EndComp
$Comp
L LM393 U2
U 2 1 5A27494F
P 2350 5100
F 0 "U2" H 2500 5250 50  0000 C CNN
F 1 "LM393" H 2600 4950 50  0000 C CNN
F 2 "" H 2350 5100 50  0000 C CNN
F 3 "" H 2350 5100 50  0000 C CNN
	2    2350 5100
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 5A274950
P 6200 2900
F 0 "R11" V 6280 2900 50  0000 C CNN
F 1 "2k7" V 6200 2900 50  0000 C CNN
F 2 "" V 6130 2900 50  0000 C CNN
F 3 "" H 6200 2900 50  0000 C CNN
	1    6200 2900
	-1   0    0    1   
$EndComp
$Comp
L C_Small C6
U 1 1 5A274951
P 6650 2800
F 0 "C6" V 6750 2800 50  0000 L CNN
F 1 "100n" V 6550 2700 50  0000 L CNN
F 2 "" H 6650 2800 50  0000 C CNN
F 3 "" H 6650 2800 50  0000 C CNN
	1    6650 2800
	0    1    1    0   
$EndComp
$Comp
L GND #PWR011
U 1 1 5A274952
P 6750 2800
F 0 "#PWR011" H 6750 2550 50  0001 C CNN
F 1 "GND" H 6750 2650 50  0000 C CNN
F 2 "" H 6750 2800 50  0000 C CNN
F 3 "" H 6750 2800 50  0000 C CNN
	1    6750 2800
	0    -1   -1   0   
$EndComp
$Comp
L -8V #PWR19
U 1 1 5A274953
P 6500 2700
F 0 "#PWR19" H 6500 2800 50  0001 C CNN
F 1 "-8V" H 6500 2850 50  0000 C CNN
F 2 "" H 6500 2700 50  0000 C CNN
F 3 "" H 6500 2700 50  0000 C CNN
	1    6500 2700
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 5A274956
P 5900 3100
F 0 "R9" V 5980 3100 50  0000 C CNN
F 1 "3k3" V 5900 3100 50  0000 C CNN
F 2 "" V 5830 3100 50  0000 C CNN
F 3 "" H 5900 3100 50  0000 C CNN
	1    5900 3100
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 5A274957
P 5900 3500
F 0 "R10" V 5980 3500 50  0000 C CNN
F 1 "5k6" V 5900 3500 50  0000 C CNN
F 2 "" V 5830 3500 50  0000 C CNN
F 3 "" H 5900 3500 50  0000 C CNN
	1    5900 3500
	1    0    0    -1  
$EndComp
$Comp
L +8V #PWR012
U 1 1 5A274958
P 6500 3600
F 0 "#PWR012" H 6500 3450 50  0001 C CNN
F 1 "+8V" H 6500 3740 50  0000 C CNN
F 2 "" H 6500 3600 50  0000 C CNN
F 3 "" H 6500 3600 50  0000 C CNN
	1    6500 3600
	1    0    0    1   
$EndComp
$Comp
L C_Small C7
U 1 1 5A274959
P 6650 3550
F 0 "C7" V 6700 3600 50  0000 L CNN
F 1 "100n" V 6550 3500 50  0000 L CNN
F 2 "" H 6650 3550 50  0000 C CNN
F 3 "" H 6650 3550 50  0000 C CNN
	1    6650 3550
	0    1    -1   0   
$EndComp
$Comp
L GND #PWR013
U 1 1 5A27495A
P 6750 3550
F 0 "#PWR013" H 6750 3300 50  0001 C CNN
F 1 "GND" H 6750 3400 50  0000 C CNN
F 2 "" H 6750 3550 50  0000 C CNN
F 3 "" H 6750 3550 50  0000 C CNN
	1    6750 3550
	0    -1   1    0   
$EndComp
$Comp
L +8V #PWR014
U 1 1 5A27495B
P 5900 2950
F 0 "#PWR014" H 5900 2800 50  0001 C CNN
F 1 "+8V" H 5900 3090 50  0000 C CNN
F 2 "" H 5900 2950 50  0000 C CNN
F 3 "" H 5900 2950 50  0000 C CNN
	1    5900 2950
	-1   0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 5A27495C
P 5900 3650
F 0 "#PWR015" H 5900 3400 50  0001 C CNN
F 1 "GND" H 5900 3500 50  0000 C CNN
F 2 "" H 5900 3650 50  0000 C CNN
F 3 "" H 5900 3650 50  0000 C CNN
	1    5900 3650
	-1   0    0    -1  
$EndComp
$Comp
L R R13
U 1 1 5A27495D
P 6350 3950
F 0 "R13" V 6430 3950 50  0000 C CNN
F 1 "27k" V 6350 3950 50  0000 C CNN
F 2 "" V 6280 3950 50  0000 C CNN
F 3 "" H 6350 3950 50  0000 C CNN
	1    6350 3950
	0    1    1    0   
$EndComp
$Comp
L D_Small D3
U 1 1 5A27495E
P 6700 3950
F 0 "D3" H 6650 4030 50  0000 L CNN
F 1 "1n4148" H 6550 3870 50  0000 L CNN
F 2 "" V 6700 3950 50  0000 C CNN
F 3 "" V 6700 3950 50  0000 C CNN
	1    6700 3950
	-1   0    0    -1  
$EndComp
$Comp
L LED D4
U 1 1 5A27495F
P 7550 3000
F 0 "D4" H 7550 2900 50  0000 C CNN
F 1 "SATURATION_LED" H 7550 3150 50  0000 C CNN
F 2 "" H 7550 3000 50  0000 C CNN
F 3 "" H 7550 3000 50  0000 C CNN
	1    7550 3000
	0    1    -1   0   
$EndComp
$Comp
L R R17
U 1 1 5A274960
P 7350 2750
F 0 "R17" V 7430 2750 50  0000 C CNN
F 1 "2k7" V 7350 2750 50  0000 C CNN
F 2 "" V 7280 2750 50  0000 C CNN
F 3 "" H 7350 2750 50  0000 C CNN
	1    7350 2750
	0    -1   -1   0   
$EndComp
$Comp
L +8V #PWR016
U 1 1 5A274961
P 7150 2700
F 0 "#PWR016" H 7150 2550 50  0001 C CNN
F 1 "+8V" H 7150 2840 50  0000 C CNN
F 2 "" H 7150 2700 50  0000 C CNN
F 3 "" H 7150 2700 50  0000 C CNN
	1    7150 2700
	-1   0    0    -1  
$EndComp
$Comp
L GND #PWR017
U 1 1 5A274962
P 1950 5250
F 0 "#PWR017" H 1950 5000 50  0001 C CNN
F 1 "GND" H 1950 5100 50  0000 C CNN
F 2 "" H 1950 5250 50  0000 C CNN
F 3 "" H 1950 5250 50  0000 C CNN
	1    1950 5250
	1    0    0    -1  
$EndComp
NoConn ~ 2250 4800
NoConn ~ 2250 5400
NoConn ~ 2650 5100
$Comp
L CONN_01X01 P2
U 1 1 5A274963
P 3050 1200
F 0 "P2" H 3050 1300 50  0000 C CNN
F 1 "+8" V 3150 1200 50  0000 C CNN
F 2 "" H 3050 1200 50  0000 C CNN
F 3 "" H 3050 1200 50  0000 C CNN
	1    3050 1200
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X01 P3
U 1 1 5A274964
P 3050 1500
F 0 "P3" H 3050 1600 50  0000 C CNN
F 1 "-8" V 3150 1500 50  0000 C CNN
F 2 "" H 3050 1500 50  0000 C CNN
F 3 "" H 3050 1500 50  0000 C CNN
	1    3050 1500
	-1   0    0    -1  
$EndComp
$Comp
L CONN_01X01 P4
U 1 1 5A274965
P 3050 1800
F 0 "P4" H 3050 1900 50  0000 C CNN
F 1 "GND" V 3150 1800 50  0000 C CNN
F 2 "" H 3050 1800 50  0000 C CNN
F 3 "" H 3050 1800 50  0000 C CNN
	1    3050 1800
	-1   0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 5A274966
P 3400 1200
F 0 "R3" V 3480 1200 50  0000 C CNN
F 1 "10" V 3400 1200 50  0000 C CNN
F 2 "" V 3330 1200 50  0000 C CNN
F 3 "" H 3400 1200 50  0000 C CNN
	1    3400 1200
	0    1    1    0   
$EndComp
$Comp
L R R4
U 1 1 5A274967
P 3400 1500
F 0 "R4" V 3480 1500 50  0000 C CNN
F 1 "10" V 3400 1500 50  0000 C CNN
F 2 "" V 3330 1500 50  0000 C CNN
F 3 "" H 3400 1500 50  0000 C CNN
	1    3400 1500
	0    1    1    0   
$EndComp
$Comp
L CP_Small C1
U 1 1 5A274968
P 3700 1650
F 0 "C1" H 3710 1720 50  0000 L CNN
F 1 "22u" H 3710 1570 50  0000 L CNN
F 2 "" H 3700 1650 50  0000 C CNN
F 3 "" H 3700 1650 50  0000 C CNN
	1    3700 1650
	1    0    0    1   
$EndComp
$Comp
L CP_Small C4
U 1 1 5A274969
P 4300 1650
F 0 "C4" H 4310 1720 50  0000 L CNN
F 1 "22u" H 4310 1570 50  0000 L CNN
F 2 "" H 4300 1650 50  0000 C CNN
F 3 "" H 4300 1650 50  0000 C CNN
	1    4300 1650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR018
U 1 1 5A27496A
P 3700 1850
F 0 "#PWR018" H 3700 1600 50  0001 C CNN
F 1 "GND" H 3700 1700 50  0000 C CNN
F 2 "" H 3700 1850 50  0000 C CNN
F 3 "" H 3700 1850 50  0000 C CNN
	1    3700 1850
	1    0    0    -1  
$EndComp
$Comp
L +8V #PWR019
U 1 1 5A27496B
P 4300 1150
F 0 "#PWR019" H 4300 1000 50  0001 C CNN
F 1 "+8V" H 4300 1290 50  0000 C CNN
F 2 "" H 4300 1150 50  0000 C CNN
F 3 "" H 4300 1150 50  0000 C CNN
	1    4300 1150
	1    0    0    -1  
$EndComp
$Comp
L -8V #PWR9
U 1 1 5A27496C
P 3700 1450
F 0 "#PWR9" H 3700 1550 50  0001 C CNN
F 1 "-8V" H 3700 1600 50  0000 C CNN
F 2 "" H 3700 1450 50  0000 C CNN
F 3 "" H 3700 1450 50  0000 C CNN
	1    3700 1450
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG020
U 1 1 5A27496D
P 3700 1100
F 0 "#FLG020" H 3700 1195 50  0001 C CNN
F 1 "PWR_FLAG" H 3700 1280 50  0000 C CNN
F 2 "" H 3700 1100 50  0000 C CNN
F 3 "" H 3700 1100 50  0000 C CNN
	1    3700 1100
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG021
U 1 1 5A27496E
P 4000 1450
F 0 "#FLG021" H 4000 1545 50  0001 C CNN
F 1 "PWR_FLAG" H 4000 1630 50  0000 C CNN
F 2 "" H 4000 1450 50  0000 C CNN
F 3 "" H 4000 1450 50  0000 C CNN
	1    4000 1450
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG022
U 1 1 5A27496F
P 4000 1850
F 0 "#FLG022" H 4000 1945 50  0001 C CNN
F 1 "PWR_FLAG" H 4000 2030 50  0000 C CNN
F 2 "" H 4000 1850 50  0000 C CNN
F 3 "" H 4000 1850 50  0000 C CNN
	1    4000 1850
	1    0    0    1   
$EndComp
Text Notes 3100 2250 0    60   ~ 0
POWER - Symmetric 8V\n
Text Notes 6350 4250 0    60   ~ 0
Saturation Indicator
Text Notes 1350 2300 0    60   ~ 0
I to V Converter\n
Wire Wire Line
	1250 1500 2200 1500
Wire Wire Line
	1250 3450 1450 3450
Wire Wire Line
	2050 1500 2050 1550
Wire Wire Line
	1750 1500 1750 1550
Connection ~ 2050 1500
Connection ~ 1750 1500
Wire Wire Line
	1100 1700 1100 1900
Wire Wire Line
	1100 1900 2050 1900
Wire Wire Line
	2050 1900 2050 1850
Wire Wire Line
	1750 1850 1750 1950
Connection ~ 1750 1900
Wire Wire Line
	1750 3450 1850 3450
Wire Wire Line
	2450 3550 2550 3550
Wire Wire Line
	2750 3550 3000 3550
Wire Wire Line
	2300 2800 2500 2800
Wire Wire Line
	2500 2800 2500 3550
Connection ~ 2500 3550
Wire Wire Line
	2100 2800 1800 2800
Wire Wire Line
	1800 2600 1800 3450
Connection ~ 1800 3450
Wire Wire Line
	3300 3550 3950 3550
Wire Wire Line
	3500 2900 3500 4200
Wire Wire Line
	1350 4200 1350 3450
Connection ~ 1350 3450
Wire Wire Line
	2350 2600 2800 2600
Wire Wire Line
	2800 2600 2800 3550
Connection ~ 2800 3550
Wire Wire Line
	2050 2600 1800 2600
Connection ~ 1800 2800
Wire Wire Line
	1800 3700 1800 3650
Wire Wire Line
	1800 3650 1850 3650
Wire Wire Line
	2050 3150 2050 3250
Wire Wire Line
	2050 3200 2100 3200
Connection ~ 2050 3200
Connection ~ 3500 3550
Wire Wire Line
	3500 2900 3800 2900
Wire Wire Line
	3800 3100 3500 3100
Connection ~ 3500 3100
Wire Wire Line
	4100 3100 4200 3100
Wire Wire Line
	4100 2900 4650 2900
Wire Wire Line
	4350 2900 4350 2950
Wire Wire Line
	4650 2900 4650 3650
Wire Wire Line
	4550 3650 4750 3650
Connection ~ 4350 2900
Wire Wire Line
	4500 3100 4650 3100
Connection ~ 4650 3100
Connection ~ 4650 3650
Wire Wire Line
	5550 1000 6200 1000
Wire Wire Line
	5600 1000 5600 1050
Wire Wire Line
	5800 1000 5800 1050
Connection ~ 5600 1000
Wire Wire Line
	5600 1350 5600 1400
Wire Wire Line
	5600 1400 5800 1400
Wire Wire Line
	5800 1400 5800 1350
Wire Wire Line
	5700 1450 5700 1400
Connection ~ 5700 1400
Connection ~ 5800 1000
Wire Wire Line
	3900 3800 3900 3750
Wire Wire Line
	3900 3750 3950 3750
Wire Wire Line
	6250 2050 6300 2050
Wire Wire Line
	6250 1750 6250 2050
Wire Wire Line
	6250 1750 6300 1750
Wire Wire Line
	6050 1900 6250 1900
Wire Wire Line
	6100 1200 6100 1900
Wire Wire Line
	6100 1200 6200 1200
Connection ~ 6250 1900
Wire Wire Line
	6600 1750 6650 1750
Wire Wire Line
	6650 1750 6650 2050
Wire Wire Line
	6650 2050 6600 2050
Connection ~ 6650 1900
Wire Wire Line
	7200 1100 7650 1100
Wire Wire Line
	7250 1100 7250 1150
Connection ~ 7250 1100
Wire Wire Line
	7250 1350 7250 1450
Wire Wire Line
	7250 1400 7800 1400
Wire Wire Line
	7800 1400 7800 1300
Connection ~ 7250 1400
Wire Wire Line
	2050 3900 2100 3900
Connection ~ 2050 3900
Wire Wire Line
	2050 3850 2050 3950
Wire Wire Line
	6200 3050 6200 3100
Wire Wire Line
	6200 3100 6300 3100
Wire Wire Line
	6500 2800 6550 2800
Connection ~ 6500 2800
Wire Wire Line
	6500 2700 6500 2900
Wire Wire Line
	6200 2750 6200 2600
Wire Wire Line
	6550 3550 6500 3550
Wire Wire Line
	6500 3500 6500 3600
Connection ~ 6500 3550
Wire Wire Line
	5900 3250 5900 3350
Wire Wire Line
	5900 3300 6300 3300
Connection ~ 5900 3300
Wire Wire Line
	6800 3950 7000 3950
Wire Wire Line
	6500 3950 6600 3950
Wire Wire Line
	6200 3950 6150 3950
Wire Wire Line
	6150 3950 6150 3300
Connection ~ 6150 3300
Wire Wire Line
	7550 2800 7550 2750
Wire Wire Line
	7550 2750 7500 2750
Wire Wire Line
	7150 2700 7150 2750
Wire Wire Line
	7150 2750 7200 2750
Wire Wire Line
	2050 5000 1950 5000
Wire Wire Line
	1950 5000 1950 5250
Wire Wire Line
	1950 5200 2050 5200
Connection ~ 1950 5200
Wire Wire Line
	3700 1450 3700 1550
Wire Wire Line
	3550 1500 4000 1500
Wire Wire Line
	4300 1150 4300 1550
Wire Wire Line
	3550 1200 4300 1200
Wire Wire Line
	3700 1750 3700 1850
Wire Wire Line
	3250 1800 4300 1800
Wire Wire Line
	4300 1800 4300 1750
Connection ~ 3700 1800
Connection ~ 4300 1200
Wire Wire Line
	3700 1100 3700 1200
Connection ~ 3700 1200
Wire Wire Line
	4000 1500 4000 1450
Connection ~ 3700 1500
Wire Wire Line
	4000 1850 4000 1800
Connection ~ 4000 1800
Wire Notes Line
	2800 2350 4500 2350
Wire Notes Line
	4500 2350 4500 800 
Wire Notes Line
	4500 800  2800 800 
Wire Notes Line
	2800 800  2800 2350
Wire Notes Line
	850  2400 5350 2400
$Comp
L R R16
U 1 1 5A278213
P 5900 1900
F 0 "R16" V 5980 1900 50  0000 C CNN
F 1 "2k7" V 5900 1900 50  0000 C CNN
F 2 "" V 5830 1900 50  0000 C CNN
F 3 "" H 5900 1900 50  0000 C CNN
	1    5900 1900
	0    1    1    0   
$EndComp
$Comp
L POT RV2
U 1 1 5A278290
P 5600 1900
F 0 "RV2" H 5600 1820 50  0000 C CNN
F 1 "50k" H 5600 1900 50  0000 C CNN
F 2 "" H 5600 1900 50  0000 C CNN
F 3 "" H 5600 1900 50  0000 C CNN
	1    5600 1900
	1    0    0    -1  
$EndComp
Wire Wire Line
	5600 1750 5600 1700
Connection ~ 6100 1900
$Comp
L CONN_01X02 P5
U 1 1 5A278F5F
P 5250 1600
F 0 "P5" H 5250 1750 50  0000 C CNN
F 1 "GAIN_ADJ." V 5350 1600 50  0000 C CNN
F 2 "" H 5250 1600 50  0000 C CNN
F 3 "" H 5250 1600 50  0000 C CNN
	1    5250 1600
	0    1    -1   0   
$EndComp
$Comp
L GND #PWR023
U 1 1 5A279C98
P 5150 1900
F 0 "#PWR023" H 5150 1650 50  0001 C CNN
F 1 "GND" H 5150 1750 50  0000 C CNN
F 2 "" H 5150 1900 50  0000 C CNN
F 3 "" H 5150 1900 50  0000 C CNN
	1    5150 1900
	0    1    1    0   
$EndComp
Wire Wire Line
	5300 1800 5300 1900
Wire Wire Line
	5300 1900 5450 1900
Wire Wire Line
	5150 1900 5200 1900
Wire Wire Line
	5200 1900 5200 1800
Text Notes 5950 2300 0    60   ~ 0
1-10x Amplifier\n
NoConn ~ 6800 900 
NoConn ~ 6800 1000
NoConn ~ 6800 1200
Wire Wire Line
	6800 1100 6900 1100
Connection ~ 6850 1100
$Comp
L R R7
U 1 1 5A2EF897
P 2450 4200
F 0 "R7" V 2530 4200 50  0000 C CNN
F 1 "20k" V 2450 4200 50  0000 C CNN
F 2 "" V 2380 4200 50  0000 C CNN
F 3 "" H 2450 4200 50  0000 C CNN
	1    2450 4200
	0    1    1    0   
$EndComp
Wire Wire Line
	2300 4200 1350 4200
Wire Wire Line
	3500 4200 2600 4200
Wire Wire Line
	5600 1700 5400 1700
Wire Wire Line
	5400 1700 5400 1900
Connection ~ 5400 1900
Connection ~ 7000 3200
Wire Wire Line
	7000 3950 7000 3200
Wire Wire Line
	6900 3200 7550 3200
Wire Notes Line
	5400 2400 8150 2400
Wire Notes Line
	8150 2400 8150 4500
Text GLabel 2200 1500 2    60   Output ~ 0
V1_I
Text GLabel 1250 3450 0    60   Input ~ 0
V1_I
Wire Notes Line
	850  2350 2550 2350
Wire Notes Line
	850  1250 2550 1250
Wire Notes Line
	850  1250 850  2350
Text Notes 1750 4650 0    60   ~ 0
Full Wave Rectifier with Offset Null and Constant Time Adjust\n\n\n
Wire Notes Line
	850  4500 5350 4500
Text GLabel 4750 3650 2    60   Output ~ 0
I_RECTF
Wire Notes Line
	5350 4500 5350 2400
Text GLabel 5250 1000 0    60   Input ~ 0
I_RECTF
Wire Wire Line
	6850 1900 6650 1900
Wire Wire Line
	6850 800  6850 1900
Text GLabel 6950 800  2    60   Output ~ 0
I_RECTF_AMP
Wire Wire Line
	6850 800  6950 800 
Text GLabel 6100 2600 0    60   Input ~ 0
I_RECTF_AMP
Wire Wire Line
	6200 2600 6100 2600
Wire Notes Line
	5400 2400 5400 4500
Text Notes 5750 3350 0    60   ~ 0
5V
Wire Notes Line
	8150 550  8150 2350
Wire Notes Line
	8150 2350 4750 2350
Wire Notes Line
	4750 2350 4750 550 
Wire Notes Line
	4750 550  8150 550 
Wire Notes Line
	850  4500 850  2400
Wire Notes Line
	5400 4500 8150 4500
Wire Notes Line
	2550 1250 2550 2350
$EndSCHEMATC