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 EELAYER 25 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L BNC P1 U 1 1 5A26C4F0 P 2750 2250 F 0 "P1" H 2900 2100 50 0000 C CNN F 1 "INPUT" H 2750 2400 50 0000 C CNN F 2 "" H 2750 2250 50 0000 C CNN F 3 "" H 2750 2250 50 0000 C CNN 1 2750 2250 -1 0 0 -1 $EndComp $Comp L R R1 U 1 1 5A26C581 P 3150 2450 F 0 "R1" V 3230 2450 50 0000 C CNN F 1 "100k" V 3150 2450 50 0000 C CNN F 2 "" V 3080 2450 50 0000 C CNN F 3 "" H 3150 2450 50 0000 C CNN 1 3150 2450 1 0 0 -1 $EndComp $Comp L R R2 U 1 1 5A26C5A4 P 3350 2250 F 0 "R2" V 3430 2250 50 0000 C CNN F 1 "1k" V 3350 2250 50 0000 C CNN F 2 "" V 3280 2250 50 0000 C CNN F 3 "" H 3350 2250 50 0000 C CNN 1 3350 2250 0 1 1 0 $EndComp $Comp L ZENERsmall D1 U 1 1 5A26C65F P 3550 2400 F 0 "D1" H 3500 2500 50 0000 C CNN F 1 "5V1" H 3500 2300 50 0000 C CNN F 2 "" H 3550 2400 50 0000 C CNN F 3 "" H 3550 2400 50 0000 C CNN 1 3550 2400 0 -1 -1 0 $EndComp $Comp L ZENERsmall D2 U 1 1 5A26C6AA P 3550 2600 F 0 "D2" H 3600 2700 50 0000 C CNN F 1 "5V1" H 3600 2500 50 0000 C CNN F 2 "" H 3550 2600 50 0000 C CNN F 3 "" H 3550 2600 50 0000 C CNN 1 3550 2600 0 1 1 0 $EndComp $Comp L GND #PWR01 U 1 1 5A26C6D2 P 3550 2700 F 0 "#PWR01" H 3550 2450 50 0001 C CNN F 1 "GND" H 3550 2550 50 0000 C CNN F 2 "" H 3550 2700 50 0000 C CNN F 3 "" H 3550 2700 50 0000 C CNN 1 3550 2700 1 0 0 -1 $EndComp $Comp L C C1 U 1 1 5A26C721 P 3950 2500 F 0 "C1" H 3975 2600 50 0000 L CNN F 1 "470n" H 3975 2400 50 0000 L CNN F 2 "" H 3988 2350 50 0000 C CNN F 3 "" H 3950 2500 50 0000 C CNN 1 3950 2500 1 0 0 -1 $EndComp $Comp L R R3 U 1 1 5A26C746 P 3750 2250 F 0 "R3" V 3830 2250 50 0000 C CNN F 1 "22k" V 3750 2250 50 0000 C CNN F 2 "" V 3680 2250 50 0000 C CNN F 3 "" H 3750 2250 50 0000 C CNN 1 3750 2250 0 1 1 0 $EndComp $Comp L GND #PWR02 U 1 1 5A26C9C4 P 3150 2700 F 0 "#PWR02" H 3150 2450 50 0001 C CNN F 1 "GND" H 3150 2550 50 0000 C CNN F 2 "" H 3150 2700 50 0000 C CNN F 3 "" H 3150 2700 50 0000 C CNN 1 3150 2700 1 0 0 -1 $EndComp $Comp L OPA177 U1 U 1 1 5A26C7F5 P 4600 2350 F 0 "U1" H 4300 2550 50 0000 C CNN F 1 "OPA177" H 4550 2350 50 0000 C CNN F 2 "" H 4500 2250 50 0000 C CNN F 3 "" H 4600 2350 50 0000 C CNN 1 4600 2350 1 0 0 -1 $EndComp $Comp L GND #PWR03 U 1 1 5A26C982 P 3950 2700 F 0 "#PWR03" H 3950 2450 50 0001 C CNN F 1 "GND" H 3950 2550 50 0000 C CNN F 2 "" H 3950 2700 50 0000 C CNN F 3 "" H 3950 2700 50 0000 C CNN 1 3950 2700 1 0 0 -1 $EndComp $Comp L R R4 U 1 1 5A26CA07 P 4050 3200 F 0 "R4" V 4130 3200 50 0000 C CNN F 1 "20k" V 4050 3200 50 0000 C CNN F 2 "" V 3980 3200 50 0000 C CNN F 3 "" H 4050 3200 50 0000 C CNN 1 4050 3200 0 1 1 0 $EndComp $Comp L R R5 U 1 1 5A26CA58 P 4600 3100 F 0 "R5" V 4550 3250 50 0000 C CNN F 1 "180k" V 4600 3100 50 0000 C CNN F 2 "" V 4530 3100 50 0000 C CNN F 3 "" H 4600 3100 50 0000 C CNN 1 4600 3100 0 1 1 0 $EndComp $Comp L C C2 U 1 1 5A26CAE2 P 4600 3300 F 0 "C2" V 4650 3400 50 0000 L CNN F 1 "220n" V 4650 3050 50 0000 L CNN F 2 "" H 4638 3150 50 0000 C CNN F 3 "" H 4600 3300 50 0000 C CNN 1 4600 3300 0 1 1 0 $EndComp $Comp L C_Small C4 U 1 1 5A26CB62 P 4650 2700 F 0 "C4" V 4750 2750 50 0000 L CNN F 1 "100n" V 4550 2600 50 0000 L CNN F 2 "" H 4650 2700 50 0000 C CNN F 3 "" H 4650 2700 50 0000 C CNN 1 4650 2700 0 1 1 0 $EndComp $Comp L GND #PWR04 U 1 1 5A26CC13 P 4750 2700 F 0 "#PWR04" H 4750 2450 50 0001 C CNN F 1 "GND" H 4750 2550 50 0000 C CNN F 2 "" H 4750 2700 50 0000 C CNN F 3 "" H 4750 2700 50 0000 C CNN 1 4750 2700 0 -1 -1 0 $EndComp NoConn ~ 4900 2450 NoConn ~ 4900 2250 NoConn ~ 4900 2150 $Comp L R R10 U 1 1 5A26CE37 P 5800 2350 F 0 "R10" V 5880 2350 50 0000 C CNN F 1 "10k" V 5800 2350 50 0000 C CNN F 2 "" V 5730 2350 50 0000 C CNN F 3 "" H 5800 2350 50 0000 C CNN 1 5800 2350 0 1 1 0 $EndComp $Comp L C C7 U 1 1 5A26CE98 P 6000 2550 F 0 "C7" H 5900 2650 50 0000 L CNN F 1 "220n" H 6050 2650 50 0000 L CNN F 2 "" H 6038 2400 50 0000 C CNN F 3 "" H 6000 2550 50 0000 C CNN 1 6000 2550 -1 0 0 1 $EndComp $Comp L R R11 U 1 1 5A26D0A3 P 6300 2550 F 0 "R11" V 6380 2550 50 0000 C CNN F 1 "RX" V 6300 2550 50 0000 C CNN F 2 "" V 6230 2550 50 0000 C CNN F 3 "" H 6300 2550 50 0000 C CNN 1 6300 2550 -1 0 0 1 $EndComp $Comp L GND #PWR05 U 1 1 5A26D18D P 6150 2800 F 0 "#PWR05" H 6150 2550 50 0001 C CNN F 1 "GND" H 6150 2650 50 0000 C CNN F 2 "" H 6150 2800 50 0000 C CNN F 3 "" H 6150 2800 50 0000 C CNN 1 6150 2800 1 0 0 -1 $EndComp $Comp L OPA177 U3 U 1 1 5A26D235 P 6900 2450 F 0 "U3" H 6600 2650 50 0000 C CNN F 1 "OPA177" H 6850 2450 50 0000 C CNN F 2 "" H 6800 2350 50 0000 C CNN F 3 "" H 6900 2450 50 0000 C CNN 1 6900 2450 1 0 0 -1 $EndComp $Comp L R R13 U 1 1 5A26D32E P 6950 3150 F 0 "R13" V 7000 3000 50 0000 C CNN F 1 "27k" V 6950 3150 50 0000 C CNN F 2 "" V 6880 3150 50 0000 C CNN F 3 "" H 6950 3150 50 0000 C CNN 1 6950 3150 0 -1 -1 0 $EndComp $Comp L C_Small C8 U 1 1 5A26D3BD P 6950 2800 F 0 "C8" V 6850 2850 50 0000 L CNN F 1 "100n" V 7050 2750 50 0000 L CNN F 2 "" H 6950 2800 50 0000 C CNN F 3 "" H 6950 2800 50 0000 C CNN 1 6950 2800 0 1 1 0 $EndComp $Comp L GND #PWR06 U 1 1 5A26D547 P 7050 2800 F 0 "#PWR06" H 7050 2550 50 0001 C CNN F 1 "GND" H 7050 2650 50 0000 C CNN F 2 "" H 7050 2800 50 0000 C CNN F 3 "" H 7050 2800 50 0000 C CNN 1 7050 2800 0 -1 -1 0 $EndComp $Comp L C C9 U 1 1 5A26D71B P 6950 3350 F 0 "C9" V 6900 3150 50 0000 L CNN F 1 "220n" V 6900 3450 50 0000 L CNN F 2 "" H 6988 3200 50 0000 C CNN F 3 "" H 6950 3350 50 0000 C CNN 1 6950 3350 0 -1 -1 0 $EndComp Wire Wire Line 3500 2250 3550 2250 Wire Wire Line 3550 2250 3600 2250 Wire Wire Line 3550 2250 3550 2300 Connection ~ 3550 2250 Wire Wire Line 3150 2300 3150 2250 Wire Wire Line 2900 2250 3150 2250 Wire Wire Line 3150 2250 3200 2250 Connection ~ 3150 2250 Wire Wire Line 2750 2650 3150 2650 Wire Wire Line 3150 2600 3150 2650 Wire Wire Line 3150 2650 3150 2700 Connection ~ 3150 2650 Wire Wire Line 3900 2250 3950 2250 Wire Wire Line 3950 2250 4300 2250 Wire Wire Line 3950 2250 3950 2350 Wire Wire Line 3950 2700 3950 2650 Connection ~ 3950 2250 Wire Wire Line 4500 2650 4500 2700 Wire Wire Line 4500 2700 4500 2750 Wire Wire Line 4500 2700 4550 2700 Wire Wire Line 4450 3100 4400 3100 Wire Wire Line 4400 3100 4400 3200 Wire Wire Line 4400 3200 4400 3300 Wire Wire Line 4400 3300 4450 3300 Wire Wire Line 4200 3200 4250 3200 Wire Wire Line 4250 3200 4400 3200 Wire Wire Line 4250 2450 4250 3200 Wire Wire Line 4250 2450 4300 2450 Connection ~ 4400 3200 Wire Wire Line 4750 3100 4800 3100 Wire Wire Line 4800 3100 4800 3200 Wire Wire Line 4800 3200 4800 3300 Wire Wire Line 4800 3300 4750 3300 Wire Wire Line 5050 3200 4800 3200 Wire Wire Line 5050 2350 5050 3200 Wire Wire Line 4900 2350 5050 2350 Wire Wire Line 5050 2350 5650 2350 Connection ~ 4800 3200 Wire Wire Line 5950 2350 6000 2350 Wire Wire Line 6000 2350 6300 2350 Wire Wire Line 6300 2350 6600 2350 Wire Wire Line 6000 2350 6000 2400 Wire Wire Line 6300 2350 6300 2400 Connection ~ 6000 2350 Wire Wire Line 6000 2700 6000 2750 Wire Wire Line 6000 2750 6150 2750 Wire Wire Line 6150 2750 6300 2750 Wire Wire Line 6300 2750 6300 2700 Wire Wire Line 6150 2800 6150 2750 Connection ~ 6150 2750 Connection ~ 5050 2350 Connection ~ 6300 2350 Wire Wire Line 6800 2750 6800 2800 Wire Wire Line 6800 2800 6800 2850 Wire Wire Line 6800 2800 6850 2800 Wire Wire Line 6550 2550 6550 3250 Wire Wire Line 6550 2550 6600 2550 Wire Wire Line 6750 3150 6800 3150 Wire Wire Line 7150 3150 7100 3150 Wire Wire Line 6750 3150 6750 3250 Wire Wire Line 6750 3250 6750 3350 Wire Wire Line 6750 3350 6800 3350 Wire Wire Line 7150 3350 7100 3350 Wire Wire Line 7150 3150 7150 3250 Wire Wire Line 7150 3250 7150 3350 Wire Wire Line 7300 3250 7150 3250 Connection ~ 7150 3250 Wire Wire Line 6450 3250 6550 3250 Wire Wire Line 6550 3250 6750 3250 Connection ~ 6750 3250 $Comp L R R12 U 1 1 5A26E247 P 6300 3250 F 0 "R12" V 6380 3250 50 0000 C CNN F 1 "2k7" V 6300 3250 50 0000 C CNN F 2 "" V 6230 3250 50 0000 C CNN F 3 "" H 6300 3250 50 0000 C CNN 1 6300 3250 0 1 1 0 $EndComp Connection ~ 6550 3250 $Comp L POT RV1 U 1 1 5A26E36E P 5950 3250 F 0 "RV1" H 5950 3170 50 0000 C CNN F 1 "50k" H 5950 3250 50 0000 C CNN F 2 "" H 5950 3250 50 0000 C CNN F 3 "" H 5950 3250 50 0000 C CNN 1 5950 3250 1 0 0 -1 $EndComp Wire Wire Line 5650 3250 5750 3250 Wire Wire Line 5750 3250 5800 3250 Wire Wire Line 5750 3250 5750 3050 Wire Wire Line 5750 3050 5950 3050 Wire Wire Line 5950 3050 5950 3100 Wire Wire Line 6100 3250 6150 3250 Connection ~ 5750 3250 $Comp L GND #PWR07 U 1 1 5A26E5FD P 5450 3250 F 0 "#PWR07" H 5450 3000 50 0001 C CNN F 1 "GND" H 5450 3100 50 0000 C CNN F 2 "" H 5450 3250 50 0000 C CNN F 3 "" H 5450 3250 50 0000 C CNN 1 5450 3250 0 1 1 0 $EndComp $Comp L CONN_01X02 P2 U 1 1 5A26E467 P 5600 2950 F 0 "P2" H 5600 3100 50 0000 C CNN F 1 "GAIN_ADJ" V 5700 2950 50 0000 C CNN F 2 "" H 5600 2950 50 0000 C CNN F 3 "" H 5600 2950 50 0000 C CNN 1 5600 2950 0 1 -1 0 $EndComp Wire Wire Line 7300 2350 7300 3250 Wire Wire Line 7300 3250 7300 3800 Wire Wire Line 7200 2350 7300 2350 Wire Wire Line 7300 2350 7400 2350 $Comp L R R14 U 1 1 5A26E913 P 7550 2350 F 0 "R14" V 7630 2350 50 0000 C CNN F 1 "100" V 7550 2350 50 0000 C CNN F 2 "" V 7480 2350 50 0000 C CNN F 3 "" H 7550 2350 50 0000 C CNN 1 7550 2350 0 1 1 0 $EndComp Connection ~ 7300 2350 $Comp L ZENERsmall D4 U 1 1 5A26EA1B P 7750 2500 F 0 "D4" H 7800 2400 50 0000 C CNN F 1 "5V1" H 7750 2600 50 0000 C CNN F 2 "" H 7750 2500 50 0000 C CNN F 3 "" H 7750 2500 50 0000 C CNN 1 7750 2500 0 1 1 0 $EndComp Wire Wire Line 7700 2350 7750 2350 Wire Wire Line 7750 2350 8100 2350 Wire Wire Line 7750 2350 7750 2400 Connection ~ 7750 2350 $Comp L GND #PWR08 U 1 1 5A26EC3A P 7750 2700 F 0 "#PWR08" H 7750 2450 50 0001 C CNN F 1 "GND" H 7750 2550 50 0000 C CNN F 2 "" H 7750 2700 50 0000 C CNN F 3 "" H 7750 2700 50 0000 C CNN 1 7750 2700 1 0 0 -1 $EndComp $Comp L BNC P3 U 1 1 5A26ED35 P 8250 2350 F 0 "P3" H 8350 2200 50 0000 C CNN F 1 "OUTPUT (0-5V)" H 8250 2500 50 0000 C CNN F 2 "" H 8250 2350 50 0000 C CNN F 3 "" H 8250 2350 50 0000 C CNN 1 8250 2350 1 0 0 -1 $EndComp Wire Wire Line 2750 2450 2750 2650 Wire Wire Line 7750 2600 7750 2650 Wire Wire Line 7750 2650 7750 2700 Wire Wire Line 7750 2650 8250 2650 Wire Wire Line 8250 2650 8250 2550 Connection ~ 7750 2650 $Comp L +8V #PWR09 U 1 1 5A26F5A2 P 4500 1950 F 0 "#PWR09" H 4500 1800 50 0001 C CNN F 1 "+8V" H 4500 2090 50 0000 C CNN F 2 "" H 4500 1950 50 0000 C CNN F 3 "" H 4500 1950 50 0000 C CNN 1 4500 1950 1 0 0 -1 $EndComp $Comp L -8V #PWR8 U 1 1 5A26F61A P 4500 2750 F 0 "#PWR8" H 4500 2850 50 0001 C CNN F 1 "-8V" H 4500 2900 50 0000 C CNN F 2 "" H 4500 2750 50 0000 C CNN F 3 "" H 4500 2750 50 0000 C CNN 1 4500 2750 -1 0 0 1 $EndComp Connection ~ 4500 2700 $Comp L +8V #PWR010 U 1 1 5A26F7A6 P 6800 2150 F 0 "#PWR010" H 6800 2000 50 0001 C CNN F 1 "+8V" H 6800 2290 50 0000 C CNN F 2 "" H 6800 2150 50 0000 C CNN F 3 "" H 6800 2150 50 0000 C CNN 1 6800 2150 1 0 0 -1 $EndComp $Comp L -8V #PWR21 U 1 1 5A26F7FC P 6800 2850 F 0 "#PWR21" H 6800 2950 50 0001 C CNN F 1 "-8V" H 6800 3000 50 0000 C CNN F 2 "" H 6800 2850 50 0000 C CNN F 3 "" H 6800 2850 50 0000 C CNN 1 6800 2850 -1 0 0 1 $EndComp Connection ~ 6800 2800 Connection ~ 7300 3250 $Comp L LM393 U2 U 1 1 5A26F9BB P 5700 4500 F 0 "U2" H 5850 4650 50 0000 C CNN F 1 "LM393" H 5950 4350 50 0000 C CNN F 2 "" H 5700 4500 50 0000 C CNN F 3 "" H 5700 4500 50 0000 C CNN 1 5700 4500 1 0 0 1 $EndComp $Comp L LM393 U2 U 2 1 5A26FA9A P 5850 6400 F 0 "U2" H 6000 6550 50 0000 C CNN F 1 "LM393" H 6100 6250 50 0000 C CNN F 2 "" H 5850 6400 50 0000 C CNN F 3 "" H 5850 6400 50 0000 C CNN 2 5850 6400 1 0 0 -1 $EndComp Wire Wire Line 5650 3150 5650 3250 Wire Wire Line 5550 3150 5550 3250 Wire Wire Line 5550 3250 5450 3250 $Comp L R R8 U 1 1 5A2700C8 P 5300 4200 F 0 "R8" V 5380 4200 50 0000 C CNN F 1 "2k7" V 5300 4200 50 0000 C CNN F 2 "" V 5230 4200 50 0000 C CNN F 3 "" H 5300 4200 50 0000 C CNN 1 5300 4200 -1 0 0 1 $EndComp Wire Wire Line 5300 4350 5300 4400 Wire Wire Line 5300 4400 5400 4400 $Comp L C_Small C5 U 1 1 5A270604 P 5750 4100 F 0 "C5" V 5850 4100 50 0000 L CNN F 1 "100n" V 5650 4000 50 0000 L CNN F 2 "" H 5750 4100 50 0000 C CNN F 3 "" H 5750 4100 50 0000 C CNN 1 5750 4100 0 1 1 0 $EndComp $Comp L GND #PWR011 U 1 1 5A27060A P 5850 4100 F 0 "#PWR011" H 5850 3850 50 0001 C CNN F 1 "GND" H 5850 3950 50 0000 C CNN F 2 "" H 5850 4100 50 0000 C CNN F 3 "" H 5850 4100 50 0000 C CNN 1 5850 4100 0 -1 -1 0 $EndComp Wire Wire Line 5600 4100 5650 4100 $Comp L -8V #PWR15 U 1 1 5A270612 P 5600 4050 F 0 "#PWR15" H 5600 4150 50 0001 C CNN F 1 "-8V" H 5600 4200 50 0000 C CNN F 2 "" H 5600 4050 50 0000 C CNN F 3 "" H 5600 4050 50 0000 C CNN 1 5600 4050 1 0 0 -1 $EndComp Connection ~ 5600 4100 Wire Wire Line 5600 4050 5600 4100 Wire Wire Line 5600 4100 5600 4200 NoConn ~ 7200 2250 NoConn ~ 7200 2450 NoConn ~ 7200 2550 $Comp L C_Small C3 U 1 1 5A27161E P 4650 2000 F 0 "C3" V 4700 2050 50 0000 L CNN F 1 "100n" V 4550 1950 50 0000 L CNN F 2 "" H 4650 2000 50 0000 C CNN F 3 "" H 4650 2000 50 0000 C CNN 1 4650 2000 0 1 1 0 $EndComp Wire Wire Line 4550 2000 4500 2000 Wire Wire Line 4500 1950 4500 2000 Wire Wire Line 4500 2000 4500 2050 Connection ~ 4500 2000 $Comp L GND #PWR012 U 1 1 5A2718ED P 4750 2000 F 0 "#PWR012" H 4750 1750 50 0001 C CNN F 1 "GND" H 4750 1850 50 0000 C CNN F 2 "" H 4750 2000 50 0000 C CNN F 3 "" H 4750 2000 50 0000 C CNN 1 4750 2000 0 -1 -1 0 $EndComp Wire Wire Line 5300 4050 5300 3800 Wire Wire Line 5300 3800 7300 3800 $Comp L R R6 U 1 1 5A2721C9 P 5000 4400 F 0 "R6" V 5080 4400 50 0000 C CNN F 1 "3k3" V 5000 4400 50 0000 C CNN F 2 "" V 4930 4400 50 0000 C CNN F 3 "" H 5000 4400 50 0000 C CNN 1 5000 4400 1 0 0 -1 $EndComp $Comp L R R7 U 1 1 5A27226A P 5000 4800 F 0 "R7" V 5080 4800 50 0000 C CNN F 1 "5k6" V 5000 4800 50 0000 C CNN F 2 "" V 4930 4800 50 0000 C CNN F 3 "" H 5000 4800 50 0000 C CNN 1 5000 4800 1 0 0 -1 $EndComp $Comp L +8V #PWR013 U 1 1 5A272681 P 5600 4900 F 0 "#PWR013" H 5600 4750 50 0001 C CNN F 1 "+8V" H 5600 5040 50 0000 C CNN F 2 "" H 5600 4900 50 0000 C CNN F 3 "" H 5600 4900 50 0000 C CNN 1 5600 4900 1 0 0 1 $EndComp $Comp L C_Small C6 U 1 1 5A272687 P 5750 4850 F 0 "C6" V 5800 4900 50 0000 L CNN F 1 "100n" V 5650 4800 50 0000 L CNN F 2 "" H 5750 4850 50 0000 C CNN F 3 "" H 5750 4850 50 0000 C CNN 1 5750 4850 0 1 -1 0 $EndComp Wire Wire Line 5650 4850 5600 4850 Wire Wire Line 5600 4800 5600 4850 Wire Wire Line 5600 4850 5600 4900 Connection ~ 5600 4850 $Comp L GND #PWR014 U 1 1 5A272690 P 5850 4850 F 0 "#PWR014" H 5850 4600 50 0001 C CNN F 1 "GND" H 5850 4700 50 0000 C CNN F 2 "" H 5850 4850 50 0000 C CNN F 3 "" H 5850 4850 50 0000 C CNN 1 5850 4850 0 -1 1 0 $EndComp Wire Wire Line 5000 4550 5000 4600 Wire Wire Line 5000 4600 5000 4650 $Comp L +8V #PWR015 U 1 1 5A272853 P 5000 4250 F 0 "#PWR015" H 5000 4100 50 0001 C CNN F 1 "+8V" H 5000 4390 50 0000 C CNN F 2 "" H 5000 4250 50 0000 C CNN F 3 "" H 5000 4250 50 0000 C CNN 1 5000 4250 -1 0 0 -1 $EndComp $Comp L GND #PWR016 U 1 1 5A2728C1 P 5000 4950 F 0 "#PWR016" H 5000 4700 50 0001 C CNN F 1 "GND" H 5000 4800 50 0000 C CNN F 2 "" H 5000 4950 50 0000 C CNN F 3 "" H 5000 4950 50 0000 C CNN 1 5000 4950 -1 0 0 -1 $EndComp Wire Wire Line 5000 4600 5250 4600 Wire Wire Line 5250 4600 5400 4600 Connection ~ 5000 4600 $Comp L R R9 U 1 1 5A272BF7 P 5450 5250 F 0 "R9" V 5530 5250 50 0000 C CNN F 1 "27k" V 5450 5250 50 0000 C CNN F 2 "" V 5380 5250 50 0000 C CNN F 3 "" H 5450 5250 50 0000 C CNN 1 5450 5250 0 1 1 0 $EndComp $Comp L D_Small D3 U 1 1 5A272D8D P 5800 5250 F 0 "D3" H 5750 5330 50 0000 L CNN F 1 "1n4001" H 5650 5170 50 0000 L CNN F 2 "" V 5800 5250 50 0000 C CNN F 3 "" V 5800 5250 50 0000 C CNN 1 5800 5250 -1 0 0 -1 $EndComp Wire Wire Line 5900 5250 6100 5250 Wire Wire Line 6100 5250 6100 4500 Wire Wire Line 6000 4500 6100 4500 Wire Wire Line 6100 4500 8000 4500 Wire Wire Line 5600 5250 5700 5250 Wire Wire Line 5300 5250 5250 5250 Wire Wire Line 5250 5250 5250 4600 Connection ~ 5250 4600 $Comp L LED D5 U 1 1 5A27312A P 8000 4300 F 0 "D5" H 8000 4200 50 0000 C CNN F 1 "SATURATION_LED" H 8000 4450 50 0000 C CNN F 2 "" H 8000 4300 50 0000 C CNN F 3 "" H 8000 4300 50 0000 C CNN 1 8000 4300 0 1 -1 0 $EndComp $Comp L R R15 U 1 1 5A2731DD P 7800 4050 F 0 "R15" V 7880 4050 50 0000 C CNN F 1 "2k7" V 7800 4050 50 0000 C CNN F 2 "" V 7730 4050 50 0000 C CNN F 3 "" H 7800 4050 50 0000 C CNN 1 7800 4050 0 -1 -1 0 $EndComp Connection ~ 6100 4500 $Comp L +8V #PWR017 U 1 1 5A2735C3 P 7600 4000 F 0 "#PWR017" H 7600 3850 50 0001 C CNN F 1 "+8V" H 7600 4140 50 0000 C CNN F 2 "" H 7600 4000 50 0000 C CNN F 3 "" H 7600 4000 50 0000 C CNN 1 7600 4000 -1 0 0 -1 $EndComp Wire Wire Line 8000 4100 8000 4050 Wire Wire Line 8000 4050 7950 4050 Wire Wire Line 7600 4000 7600 4050 Wire Wire Line 7600 4050 7650 4050 Wire Wire Line 5550 6300 5450 6300 Wire Wire Line 5450 6300 5450 6500 Wire Wire Line 5450 6500 5450 6550 Wire Wire Line 5450 6500 5550 6500 $Comp L GND #PWR018 U 1 1 5A274D3B P 5450 6550 F 0 "#PWR018" H 5450 6300 50 0001 C CNN F 1 "GND" H 5450 6400 50 0000 C CNN F 2 "" H 5450 6550 50 0000 C CNN F 3 "" H 5450 6550 50 0000 C CNN 1 5450 6550 1 0 0 -1 $EndComp Connection ~ 5450 6500 NoConn ~ 5750 6100 NoConn ~ 5750 6700 NoConn ~ 6150 6400 $Comp L CONN_01X01 P4 U 1 1 5A275BB2 P 2800 4050 F 0 "P4" H 2800 4150 50 0000 C CNN F 1 "+8" V 2900 4050 50 0000 C CNN F 2 "" H 2800 4050 50 0000 C CNN F 3 "" H 2800 4050 50 0000 C CNN 1 2800 4050 -1 0 0 -1 $EndComp $Comp L CONN_01X01 P5 U 1 1 5A275C4F P 2800 4350 F 0 "P5" H 2800 4450 50 0000 C CNN F 1 "-8" V 2900 4350 50 0000 C CNN F 2 "" H 2800 4350 50 0000 C CNN F 3 "" H 2800 4350 50 0000 C CNN 1 2800 4350 -1 0 0 -1 $EndComp $Comp L CONN_01X01 P6 U 1 1 5A275CE2 P 2800 4650 F 0 "P6" H 2800 4750 50 0000 C CNN F 1 "GND" V 2900 4650 50 0000 C CNN F 2 "" H 2800 4650 50 0000 C CNN F 3 "" H 2800 4650 50 0000 C CNN 1 2800 4650 -1 0 0 -1 $EndComp $Comp L R R16 U 1 1 5A275E4B P 3150 4050 F 0 "R16" V 3230 4050 50 0000 C CNN F 1 "10" V 3150 4050 50 0000 C CNN F 2 "" V 3080 4050 50 0000 C CNN F 3 "" H 3150 4050 50 0000 C CNN 1 3150 4050 0 1 1 0 $EndComp $Comp L R R17 U 1 1 5A275FB0 P 3150 4350 F 0 "R17" V 3230 4350 50 0000 C CNN F 1 "10" V 3150 4350 50 0000 C CNN F 2 "" V 3080 4350 50 0000 C CNN F 3 "" H 3150 4350 50 0000 C CNN 1 3150 4350 0 1 1 0 $EndComp $Comp L CP_Small C10 U 1 1 5A276093 P 3450 4500 F 0 "C10" H 3460 4570 50 0000 L CNN F 1 "22u" H 3460 4420 50 0000 L CNN F 2 "" H 3450 4500 50 0000 C CNN F 3 "" H 3450 4500 50 0000 C CNN 1 3450 4500 1 0 0 1 $EndComp $Comp L CP_Small C11 U 1 1 5A276151 P 4050 4500 F 0 "C11" H 4060 4570 50 0000 L CNN F 1 "22u" H 4060 4420 50 0000 L CNN F 2 "" H 4050 4500 50 0000 C CNN F 3 "" H 4050 4500 50 0000 C CNN 1 4050 4500 1 0 0 -1 $EndComp Wire Wire Line 3450 4300 3450 4350 Wire Wire Line 3450 4350 3450 4400 Wire Wire Line 3300 4350 3450 4350 Wire Wire Line 3450 4350 3750 4350 Wire Wire Line 4050 4000 4050 4050 Wire Wire Line 4050 4050 4050 4400 Wire Wire Line 3300 4050 3450 4050 Wire Wire Line 3450 4050 4050 4050 Wire Wire Line 3450 4600 3450 4650 Wire Wire Line 3450 4650 3450 4700 Wire Wire Line 3000 4650 3450 4650 Wire Wire Line 3450 4650 3750 4650 Wire Wire Line 3750 4650 4050 4650 Wire Wire Line 4050 4650 4050 4600 Connection ~ 3450 4650 $Comp L GND #PWR019 U 1 1 5A276C0A P 3450 4700 F 0 "#PWR019" H 3450 4450 50 0001 C CNN F 1 "GND" H 3450 4550 50 0000 C CNN F 2 "" H 3450 4700 50 0000 C CNN F 3 "" H 3450 4700 50 0000 C CNN 1 3450 4700 1 0 0 -1 $EndComp $Comp L +8V #PWR020 U 1 1 5A2771AF P 4050 4000 F 0 "#PWR020" H 4050 3850 50 0001 C CNN F 1 "+8V" H 4050 4140 50 0000 C CNN F 2 "" H 4050 4000 50 0000 C CNN F 3 "" H 4050 4000 50 0000 C CNN 1 4050 4000 1 0 0 -1 $EndComp Connection ~ 4050 4050 $Comp L -8V #PWR2 U 1 1 5A2772C0 P 3450 4300 F 0 "#PWR2" H 3450 4400 50 0001 C CNN F 1 "-8V" H 3450 4450 50 0000 C CNN F 2 "" H 3450 4300 50 0000 C CNN F 3 "" H 3450 4300 50 0000 C CNN 1 3450 4300 1 0 0 -1 $EndComp $Comp L PWR_FLAG #FLG021 U 1 1 5A2778A9 P 3450 3950 F 0 "#FLG021" H 3450 4045 50 0001 C CNN F 1 "PWR_FLAG" H 3450 4130 50 0000 C CNN F 2 "" H 3450 3950 50 0000 C CNN F 3 "" H 3450 3950 50 0000 C CNN 1 3450 3950 1 0 0 -1 $EndComp Wire Wire Line 3450 3950 3450 4050 Connection ~ 3450 4050 $Comp L PWR_FLAG #FLG022 U 1 1 5A277BFD P 3750 4300 F 0 "#FLG022" H 3750 4395 50 0001 C CNN F 1 "PWR_FLAG" H 3750 4480 50 0000 C CNN F 2 "" H 3750 4300 50 0000 C CNN F 3 "" H 3750 4300 50 0000 C CNN 1 3750 4300 1 0 0 -1 $EndComp Wire Wire Line 3750 4350 3750 4300 Connection ~ 3450 4350 $Comp L PWR_FLAG #FLG023 U 1 1 5A278544 P 3750 4700 F 0 "#FLG023" H 3750 4795 50 0001 C CNN F 1 "PWR_FLAG" H 3750 4880 50 0000 C CNN F 2 "" H 3750 4700 50 0000 C CNN F 3 "" H 3750 4700 50 0000 C CNN 1 3750 4700 1 0 0 1 $EndComp Wire Wire Line 3750 4700 3750 4650 Connection ~ 3750 4650 Connection ~ 4250 3200 $Comp L GND #PWR024 U 1 1 5A278E18 P 3900 3200 F 0 "#PWR024" H 3900 2950 50 0001 C CNN F 1 "GND" H 3900 3050 50 0000 C CNN F 2 "" H 3900 3200 50 0000 C CNN F 3 "" H 3900 3200 50 0000 C CNN 1 3900 3200 0 1 1 0 $EndComp Text Notes 2850 5100 0 60 ~ 0 POWER - Symmetric 8V\n Wire Notes Line 2550 5200 4250 5200 Wire Notes Line 4250 5200 4250 3650 Wire Notes Line 4250 3650 2550 3650 Wire Notes Line 2550 3650 2550 5200 Wire Notes Line 5150 1700 5150 3600 Wire Notes Line 3050 1700 3050 3600 Wire Notes Line 3050 1700 5150 1700 Text Notes 3800 3550 0 60 ~ 0 10x Amplifier\n Wire Notes Line 3050 3600 5150 3600 Text Notes 5650 3600 0 60 ~ 0 1-10x 2nd Stage Amplifier Wire Notes Line 5200 1950 5200 3650 Wire Notes Line 5200 3650 7900 3650 Wire Notes Line 7900 3650 7900 1950 Wire Notes Line 7900 1950 5200 1950 Wire Notes Line 4850 3700 8250 3700 Text Notes 6100 5550 0 60 ~ 0 Saturation Indicator 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