sensor_board.sch

EESchema Schematic File Version 2
LIBS:db9_shield
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:special
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:doors
LIBS:sensor_board-cache
EELAYER 27 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Sensor board for torch height controller"
Date "2 feb 2014"
Rev "2"
Comp ""
Comment1 "License: GPL v3"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L CONN_2 P1
U 1 1 52BEBFA6
P 1250 1450
F 0 "P1" V 1200 1450 40  0000 C CNN
F 1 "CONN_2" V 1300 1450 40  0000 C CNN
F 2 "~" H 1250 1450 60  0000 C CNN
F 3 "~" H 1250 1450 60  0000 C CNN
	1    1250 1450
	-1   0    0    1   
$EndComp
$Comp
L CONN_2 P2
U 1 1 52BEBFB3
P 1300 3250
F 0 "P2" V 1250 3250 40  0000 C CNN
F 1 "CONN_2" V 1350 3250 40  0000 C CNN
F 2 "~" H 1300 3250 60  0000 C CNN
F 3 "~" H 1300 3250 60  0000 C CNN
	1    1300 3250
	-1   0    0    1   
$EndComp
$Comp
L BRIDGE D3
U 1 1 52BEBFBB
P 3000 2350
F 0 "D3" H 3000 2400 70  0000 C CNN
F 1 "BRIDGE" H 3000 2300 70  0000 C CNN
F 2 "~" H 3000 2350 60  0000 C CNN
F 3 "~" H 3000 2350 60  0000 C CNN
	1    3000 2350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1600 1350 1600 2350
Wire Wire Line
	1600 2350 2150 2350
Connection ~ 1600 1550
Wire Wire Line
	1650 3150 1650 3350
Wire Wire Line
	1650 3350 3850 3350
Wire Wire Line
	3850 3350 3850 2350
Wire Wire Line
	3000 3200 10000 3200
$Comp
L TVS D4
U 1 1 52BEC020
P 5200 2300
F 0 "D4" H 5650 2550 60  0000 C CNN
F 1 "400V 1.5kW TVS" H 5750 2250 60  0000 C CNN
F 2 "~" H 5200 2300 60  0000 C CNN
F 3 "~" H 5200 2300 60  0000 C CNN
	1    5200 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	5200 1800 5200 1500
Connection ~ 5200 1500
Wire Wire Line
	5200 2800 5200 3200
Connection ~ 5200 3200
$Comp
L FUSE F1
U 1 1 52BEC043
P 4350 1500
F 0 "F1" H 4450 1550 40  0000 C CNN
F 1 "200mA" H 4250 1450 40  0000 C CNN
F 2 "~" H 4350 1500 60  0000 C CNN
F 3 "~" H 4350 1500 60  0000 C CNN
	1    4350 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3000 1500 4100 1500
Wire Wire Line
	4600 1500 7400 1500
$Comp
L GND #PWR01
U 1 1 52BEC08E
P 10000 3500
F 0 "#PWR01" H 10000 3500 30  0001 C CNN
F 1 "GND" H 10000 3430 30  0001 C CNN
F 2 "" H 10000 3500 60  0000 C CNN
F 3 "" H 10000 3500 60  0000 C CNN
	1    10000 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	10000 2850 10000 3500
$Comp
L R R8
U 1 1 52BEC0DE
P 7400 1750
F 0 "R8" V 7480 1750 40  0000 C CNN
F 1 "39K" V 7407 1751 40  0000 C CNN
F 2 "~" V 7330 1750 30  0000 C CNN
F 3 "~" H 7400 1750 30  0000 C CNN
	1    7400 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7400 3200 7400 2950
$Comp
L ZENER D5
U 1 1 52BEC1B7
P 8100 2700
F 0 "D5" H 8100 2800 50  0000 C CNN
F 1 "5v1 ZENER" H 8100 2600 40  0000 C CNN
F 2 "~" H 8100 2700 60  0000 C CNN
F 3 "~" H 8100 2700 60  0000 C CNN
	1    8100 2700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7400 2350 8550 2350
Wire Wire Line
	8100 2500 8100 2350
Connection ~ 8100 2350
Wire Wire Line
	8100 3200 8100 2900
Connection ~ 7400 3200
$Comp
L R R11
U 1 1 52BEC210
P 8800 2350
F 0 "R11" V 8880 2350 40  0000 C CNN
F 1 "100R" V 8807 2351 40  0000 C CNN
F 2 "~" V 8730 2350 30  0000 C CNN
F 3 "~" H 8800 2350 30  0000 C CNN
	1    8800 2350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9050 2350 10000 2350
Wire Wire Line
	9100 2350 9100 2450
Wire Wire Line
	9100 3200 9100 2850
Connection ~ 8100 3200
Connection ~ 9100 2350
Text Label 9600 2350 0    60   ~ 0
FILT_SIG
$Comp
L RELAY Q2
U 1 1 52BEC35A
P 3850 5250
F 0 "Q2" H 4400 5350 60  0000 C CNN
F 1 "RELAY" H 3850 5600 60  0000 C CNN
F 2 "" H 3850 5250 60  0000 C CNN
F 3 "" H 3850 5250 60  0000 C CNN
	1    3850 5250
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P3
U 1 1 52BEC367
P 1800 5100
F 0 "P3" V 1750 5100 40  0000 C CNN
F 1 "TORCH_ON" V 1850 5100 40  0000 C CNN
F 2 "~" H 1800 5100 60  0000 C CNN
F 3 "~" H 1800 5100 60  0000 C CNN
	1    1800 5100
	-1   0    0    1   
$EndComp
Wire Wire Line
	2150 5000 2350 5000
Wire Wire Line
	2350 5000 2350 4500
Wire Wire Line
	2350 4500 4200 4500
Wire Wire Line
	4200 4500 4200 4650
Wire Wire Line
	2150 5200 3150 5200
Wire Wire Line
	3550 5750 3550 5950
Wire Wire Line
	3550 4200 3550 4650
$Comp
L GND #PWR02
U 1 1 52BEC487
P 3550 6700
F 0 "#PWR02" H 3550 6700 30  0001 C CNN
F 1 "GND" H 3550 6630 30  0001 C CNN
F 2 "" H 3550 6700 60  0000 C CNN
F 3 "" H 3550 6700 60  0000 C CNN
	1    3550 6700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3550 6350 3550 6700
$Comp
L R R3
U 1 1 52BEC4B5
P 2800 6400
F 0 "R3" V 2880 6400 40  0000 C CNN
F 1 "20K" V 2807 6401 40  0000 C CNN
F 2 "~" V 2730 6400 30  0000 C CNN
F 3 "~" H 2800 6400 30  0000 C CNN
	1    2800 6400
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 6150 3250 6150
Wire Wire Line
	2800 6650 3550 6650
Connection ~ 3550 6650
$Comp
L R R2
U 1 1 52BEC513
P 2300 6150
F 0 "R2" V 2380 6150 40  0000 C CNN
F 1 "1K" V 2307 6151 40  0000 C CNN
F 2 "~" V 2230 6150 30  0000 C CNN
F 3 "~" H 2300 6150 30  0000 C CNN
	1    2300 6150
	0    -1   -1   0   
$EndComp
Connection ~ 2800 6150
$Comp
L DIODE D2
U 1 1 52BEC553
P 2850 5600
F 0 "D2" H 2850 5700 40  0000 C CNN
F 1 "DIODE" H 2850 5500 40  0000 C CNN
F 2 "~" H 2850 5600 60  0000 C CNN
F 3 "~" H 2850 5600 60  0000 C CNN
	1    2850 5600
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2850 5400 2850 4600
Wire Wire Line
	2850 4600 3550 4600
Connection ~ 3550 4600
Wire Wire Line
	2850 5800 3550 5800
Connection ~ 3550 5800
$Comp
L LED D1
U 1 1 52BEC5F1
P 1800 7100
F 0 "D1" H 1800 7200 50  0000 C CNN
F 1 "LED" H 1800 7000 50  0000 C CNN
F 2 "~" H 1800 7100 60  0000 C CNN
F 3 "~" H 1800 7100 60  0000 C CNN
	1    1800 7100
	0    1    1    0   
$EndComp
$Comp
L R R1
U 1 1 52BEC5FE
P 1800 6600
F 0 "R1" V 1880 6600 40  0000 C CNN
F 1 "3K3" V 1807 6601 40  0000 C CNN
F 2 "~" V 1730 6600 30  0000 C CNN
F 3 "~" H 1800 6600 30  0000 C CNN
	1    1800 6600
	-1   0    0    1   
$EndComp
Wire Wire Line
	1800 6150 1800 6350
Connection ~ 1800 6150
Wire Wire Line
	1800 6850 1800 6900
$Comp
L GND #PWR03
U 1 1 52BEC6D5
P 1800 7400
F 0 "#PWR03" H 1800 7400 30  0001 C CNN
F 1 "GND" H 1800 7330 30  0001 C CNN
F 2 "" H 1800 7400 60  0000 C CNN
F 3 "" H 1800 7400 60  0000 C CNN
	1    1800 7400
	1    0    0    -1  
$EndComp
Wire Wire Line
	1800 7300 1800 7400
Wire Wire Line
	1250 6150 2050 6150
Text Label 1350 6150 0    60   ~ 0
TORCH_ON
$Comp
L GND #PWR04
U 1 1 52BEC839
P 8450 6300
F 0 "#PWR04" H 8450 6300 30  0001 C CNN
F 1 "GND" H 8450 6230 30  0001 C CNN
F 2 "" H 8450 6300 60  0000 C CNN
F 3 "" H 8450 6300 60  0000 C CNN
	1    8450 6300
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P4
U 1 1 52BEC878
P 6250 5450
F 0 "P4" V 6200 5450 40  0000 C CNN
F 1 "ARC_OK" V 6300 5450 40  0000 C CNN
F 2 "~" H 6250 5450 60  0000 C CNN
F 3 "~" H 6250 5450 60  0000 C CNN
	1    6250 5450
	-1   0    0    1   
$EndComp
Wire Wire Line
	7050 5350 6600 5350
Wire Wire Line
	6600 5550 7050 5550
Text Label 6650 5550 0    60   ~ 0
ARC_OK
Wire Wire Line
	8150 4450 8150 5500
$Comp
L +12V #PWR05
U 1 1 52BEC9B2
P 8150 4450
F 0 "#PWR05" H 8150 4400 20  0001 C CNN
F 1 "+12V" H 8150 4550 30  0000 C CNN
F 2 "" H 8150 4450 60  0000 C CNN
F 3 "" H 8150 4450 60  0000 C CNN
	1    8150 4450
	1    0    0    -1  
$EndComp
Text Label 8550 5800 0    60   ~ 0
TORCH_ON
Wire Wire Line
	8450 5600 9100 5600
Text Label 8550 5400 0    60   ~ 0
FILT_SIG
Text Label 8550 5300 0    60   ~ 0
ARC_OK
Wire Wire Line
	7050 4750 7050 5350
$Comp
L +12V #PWR06
U 1 1 52BECB9D
P 7050 4750
F 0 "#PWR06" H 7050 4700 20  0001 C CNN
F 1 "+12V" H 7050 4850 30  0000 C CNN
F 2 "" H 7050 4750 60  0000 C CNN
F 3 "" H 7050 4750 60  0000 C CNN
	1    7050 4750
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P5
U 1 1 52BECCF0
P 10350 2750
F 0 "P5" V 10300 2750 40  0000 C CNN
F 1 "TEST_POINTS" V 10400 2750 40  0000 C CNN
F 2 "~" H 10350 2750 60  0000 C CNN
F 3 "~" H 10350 2750 60  0000 C CNN
	1    10350 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	10000 2350 10000 2650
Connection ~ 9100 3200
$Comp
L LED D6
U 1 1 52BECE95
P 7050 6450
F 0 "D6" H 7050 6550 50  0000 C CNN
F 1 "LED" H 7050 6350 50  0000 C CNN
F 2 "~" H 7050 6450 60  0000 C CNN
F 3 "~" H 7050 6450 60  0000 C CNN
	1    7050 6450
	0    1    1    0   
$EndComp
$Comp
L R R12
U 1 1 52BECE9B
P 7050 5950
F 0 "R12" V 7130 5950 40  0000 C CNN
F 1 "3K" V 7057 5951 40  0000 C CNN
F 2 "~" V 6980 5950 30  0000 C CNN
F 3 "~" H 7050 5950 30  0000 C CNN
	1    7050 5950
	-1   0    0    1   
$EndComp
Wire Wire Line
	7050 6200 7050 6250
$Comp
L GND #PWR07
U 1 1 52BECEA2
P 7050 6750
F 0 "#PWR07" H 7050 6750 30  0001 C CNN
F 1 "GND" H 7050 6680 30  0001 C CNN
F 2 "" H 7050 6750 60  0000 C CNN
F 3 "" H 7050 6750 60  0000 C CNN
	1    7050 6750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7050 6650 7050 6750
Wire Wire Line
	7050 5550 7050 5700
Wire Wire Line
	9100 5300 8550 5300
Wire Wire Line
	8150 5500 9100 5500
Wire Wire Line
	9100 5400 8550 5400
Wire Wire Line
	8450 5000 8450 6300
Wire Wire Line
	9100 5800 8550 5800
$Comp
L +12V #PWR08
U 1 1 52DBE565
P 3550 4200
F 0 "#PWR08" H 3550 4150 20  0001 C CNN
F 1 "+12V" H 3550 4300 30  0000 C CNN
F 2 "" H 3550 4200 60  0000 C CNN
F 3 "" H 3550 4200 60  0000 C CNN
	1    3550 4200
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 52BEC162
P 7400 2700
F 0 "R9" V 7480 2700 40  0000 C CNN
F 1 "1K" V 7407 2701 40  0000 C CNN
F 2 "~" V 7330 2700 30  0000 C CNN
F 3 "~" H 7400 2700 30  0000 C CNN
	1    7400 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	7400 2000 7400 2450
Connection ~ 7400 2350
Wire Notes Line
	6350 850  6350 3750
Wire Notes Line
	6350 3750 7950 3750
Wire Notes Line
	7950 3750 7950 850 
Wire Notes Line
	7950 850  6350 850 
Text Notes 6450 3100 0    60   ~ 0
Voltage divider\n39 kOhm : 1 kOhm.\nResistors are 10W.\nThis should in theory scale \ninput voltage from \n0-400V to 0-10V \n(divided by 40).
Wire Notes Line
	8400 850  8400 3800
Wire Notes Line
	8400 3800 9500 3800
Wire Notes Line
	9500 3800 9500 850 
Wire Notes Line
	9500 850  8400 850 
Text Notes 8500 3550 0    60   ~ 0
Low pass filter with\ncutoff at 100Hz
Connection ~ 10000 3200
Wire Notes Line
	800  4000 4550 4000
Wire Notes Line
	800  4000 800  7600
Wire Notes Line
	800  7600 4550 7600
Wire Notes Line
	4550 7600 4550 4000
Text Notes 2450 7400 0    60   ~ 0
BJT-activated relay closes "Torch ON"\n contacts in plasma source.
Wire Notes Line
	6150 850  6150 3750
Wire Notes Line
	6150 850  800  850 
Wire Notes Line
	800  850  800  3750
Wire Notes Line
	800  3750 6150 3750
Text Notes 3750 3600 0    60   ~ 0
Diode bridge to protect against reverse-polarity. \nTVS diode to protect against >400V voltage spikes.
$Comp
L C C1
U 1 1 52EE9E93
P 9100 2650
F 0 "C1" H 9100 2750 40  0000 L CNN
F 1 "10uF" H 9106 2565 40  0000 L CNN
F 2 "~" H 9138 2500 30  0000 C CNN
F 3 "~" H 9100 2650 60  0000 C CNN
	1    9100 2650
	1    0    0    -1  
$EndComp
$Comp
L DB9 J1
U 1 1 52BEC29A
P 9550 5400
F 0 "J1" H 9550 5950 70  0000 C CNN
F 1 "DB9" H 9550 4850 70  0000 C CNN
F 2 "~" H 9550 5400 60  0000 C CNN
F 3 "~" H 9550 5400 60  0000 C CNN
	1    9550 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	8450 6250 9450 6250
Wire Wire Line
	9450 6250 9450 6200
Connection ~ 8450 6250
$Comp
L BC547 Q1
U 1 1 52EEAEB7
P 3450 6150
F 0 "Q1" H 3450 6001 40  0000 R CNN
F 1 "BC547" H 3450 6300 40  0000 R CNN
F 2 "TO92" H 3350 6252 29  0000 C CNN
F 3 "~" H 3450 6150 60  0000 C CNN
	1    3450 6150
	1    0    0    -1  
$EndComp
Wire Wire Line
	9100 5000 8450 5000
Connection ~ 8450 5600
Wire Wire Line
	9100 5100 8450 5100
Wire Wire Line
	8450 5100 8450 5150
Connection ~ 8450 5150
Wire Wire Line
	9100 5200 8450 5200
Connection ~ 8450 5200
Wire Wire Line
	9100 5700 8450 5700
Connection ~ 8450 5700
$EndSCHEMATC