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