DummyLoad.sch

EESchema Schematic File Version 2
LIBS:74xgxx
LIBS:74xx
LIBS:ac-dc
LIBS:actel
LIBS:adc-dac
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:display
LIBS:dsp
LIBS:elec-unifil
LIBS:ftdi
LIBS:gennum
LIBS:graphic
LIBS:hc11
LIBS:intel
LIBS:interface
LIBS:ir
LIBS:linear
LIBS:logo
LIBS:memory
LIBS:microchip
LIBS:microchip1
LIBS:microchip_pic10mcu
LIBS:microchip_pic12mcu
LIBS:microchip_pic16mcu
LIBS:microchip_pic18mcu
LIBS:microcontrollers
LIBS:motorola
LIBS:msp430
LIBS:nxp_armmcu
LIBS:opto
LIBS:philips
LIBS:power
LIBS:powerint
LIBS:pspice
LIBS:references
LIBS:regul
LIBS:relays
LIBS:rfcom
LIBS:sensors
LIBS:siliconi
LIBS:special
LIBS:stm8
LIBS:stm32
LIBS:supertex
LIBS:texas
LIBS:transf
LIBS:transistors
LIBS:ttl_ieee
LIBS:valves
LIBS:video
LIBS:xilinx
LIBS:DummyLoad-cache
EELAYER 24 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Dummy Load"
Date "10 mai 2015"
Rev "v1.0"
Comp "dinask.eu"
Comment1 "Based on D. Jones design https://youtu.be/8xX2SVcItOA"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L LM358 U2
U 1 1 554E13A7
P 6700 1650
F 0 "U2" H 6650 1850 60  0000 L CNN
F 1 "LM358" H 6650 1400 60  0000 L CNN
F 2 "Sockets_DIP:DIP-8__300_ELL" H 6700 1650 60  0001 C CNN
F 3 "" H 6700 1650 60  0000 C CNN
	1    6700 1650
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 554E1409
P 5600 1550
F 0 "R3" V 5680 1550 40  0000 C CNN
F 1 "10K" V 5607 1551 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 5530 1550 30  0001 C CNN
F 3 "" H 5600 1550 30  0000 C CNN
	1    5600 1550
	0    1    1    0   
$EndComp
$Comp
L C C1
U 1 1 554E143E
P 5850 1750
F 0 "C1" H 5850 1850 40  0000 L CNN
F 1 "10u" H 5856 1665 40  0000 L CNN
F 2 "Capacitors_Elko_ThroughHole:Elko_vert_11.2x6.3mm_RM2.5_CopperClear" H 5888 1600 30  0001 C CNN
F 3 "" H 5850 1750 60  0000 C CNN
	1    5850 1750
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 554E14AF
P 6500 2200
F 0 "R8" V 6580 2200 40  0000 C CNN
F 1 "10K" V 6507 2201 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 6430 2200 30  0001 C CNN
F 3 "" H 6500 2200 30  0000 C CNN
	1    6500 2200
	0    1    1    0   
$EndComp
$Comp
L R R6
U 1 1 554E152F
P 6250 2450
F 0 "R6" V 6330 2450 40  0000 C CNN
F 1 "10K" V 6257 2451 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 6180 2450 30  0001 C CNN
F 3 "" H 6250 2450 30  0000 C CNN
	1    6250 2450
	-1   0    0    1   
$EndComp
Wire Wire Line
	5850 1550 6200 1550
Wire Wire Line
	6200 1750 6200 2200
Wire Wire Line
	6200 2200 6250 2200
Wire Wire Line
	6750 2200 7200 2200
Wire Wire Line
	7200 2200 7200 1650
$Comp
L SW_PUSH SW1
U 1 1 554E15C0
P 1800 5500
F 0 "SW1" H 1950 5610 50  0000 C CNN
F 1 "SW_PUSH" H 1800 5420 50  0000 C CNN
F 2 "w_swtch:PCB_PUSH" H 1800 5500 60  0001 C CNN
F 3 "" H 1800 5500 60  0000 C CNN
	1    1800 5500
	1    0    0    -1  
$EndComp
$Comp
L R R1
U 1 1 554E1635
P 2100 5750
F 0 "R1" V 2180 5750 40  0000 C CNN
F 1 "10K" V 2107 5751 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 2030 5750 30  0001 C CNN
F 3 "" H 2100 5750 30  0000 C CNN
	1    2100 5750
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR6
U 1 1 554E16BF
P 2100 6000
F 0 "#PWR6" H 2100 6000 30  0001 C CNN
F 1 "GND" H 2100 5930 30  0001 C CNN
F 2 "" H 2100 6000 60  0000 C CNN
F 3 "" H 2100 6000 60  0000 C CNN
	1    2100 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 5500 2300 5500
$Comp
L SW_PUSH SW2
U 1 1 554E17EC
P 1800 6450
F 0 "SW2" H 1950 6560 50  0000 C CNN
F 1 "SW_PUSH" H 1800 6370 50  0000 C CNN
F 2 "w_swtch:PCB_PUSH" H 1800 6450 60  0001 C CNN
F 3 "" H 1800 6450 60  0000 C CNN
	1    1800 6450
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 554E17F2
P 2100 6700
F 0 "R2" V 2180 6700 40  0000 C CNN
F 1 "10K" V 2107 6701 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 2030 6700 30  0001 C CNN
F 3 "" H 2100 6700 30  0000 C CNN
	1    2100 6700
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR7
U 1 1 554E17F8
P 2100 6950
F 0 "#PWR7" H 2100 6950 30  0001 C CNN
F 1 "GND" H 2100 6880 30  0001 C CNN
F 2 "" H 2100 6950 60  0000 C CNN
F 3 "" H 2100 6950 60  0000 C CNN
	1    2100 6950
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 6450 2300 6450
$Comp
L +5V #PWR1
U 1 1 554E184A
P 1500 5350
F 0 "#PWR1" H 1500 5440 20  0001 C CNN
F 1 "+5V" H 1500 5440 30  0000 C CNN
F 2 "" H 1500 5350 60  0000 C CNN
F 3 "" H 1500 5350 60  0000 C CNN
	1    1500 5350
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR2
U 1 1 554E189B
P 1500 6300
F 0 "#PWR2" H 1500 6390 20  0001 C CNN
F 1 "+5V" H 1500 6390 30  0000 C CNN
F 2 "" H 1500 6300 60  0000 C CNN
F 3 "" H 1500 6300 60  0000 C CNN
	1    1500 6300
	1    0    0    -1  
$EndComp
Text Notes 1750 5300 0    60   ~ 0
UP
Text Notes 1700 6250 0    60   ~ 0
DOWN
$Comp
L LCD16X2 DS1
U 1 1 554E19AF
P 4600 5650
F 0 "DS1" H 3800 6050 40  0000 C CNN
F 1 "LCD16X2" H 5300 6050 40  0000 C CNN
F 2 "Display:WC1602A" H 4600 5600 35  0000 C CIN
F 3 "" H 4600 5650 60  0000 C CNN
	1    4600 5650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR12
U 1 1 554E1BBE
P 3850 6550
F 0 "#PWR12" H 3850 6550 30  0001 C CNN
F 1 "GND" H 3850 6480 30  0001 C CNN
F 2 "" H 3850 6550 60  0000 C CNN
F 3 "" H 3850 6550 60  0000 C CNN
	1    3850 6550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3950 6150 3950 6300
Wire Wire Line
	3950 6300 3550 6300
Wire Wire Line
	3550 6050 3550 7000
$Comp
L +5V #PWR11
U 1 1 554E1C3C
P 3550 6050
F 0 "#PWR11" H 3550 6140 20  0001 C CNN
F 1 "+5V" H 3550 6140 30  0000 C CNN
F 2 "" H 3550 6050 60  0000 C CNN
F 3 "" H 3550 6050 60  0000 C CNN
	1    3550 6050
	1    0    0    -1  
$EndComp
NoConn ~ 4750 6150
NoConn ~ 4650 6150
NoConn ~ 4550 6150
NoConn ~ 4450 6150
Wire Wire Line
	5350 6150 5350 6500
Wire Wire Line
	5350 6500 3850 6500
$Comp
L R R4
U 1 1 554E1D1D
P 5650 5950
F 0 "R4" V 5730 5950 40  0000 C CNN
F 1 "220" V 5657 5951 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 5580 5950 30  0001 C CNN
F 3 "" H 5650 5950 30  0000 C CNN
	1    5650 5950
	1    0    0    -1  
$EndComp
Wire Wire Line
	5250 6150 5250 6200
Wire Wire Line
	5250 6200 5650 6200
$Comp
L +5V #PWR13
U 1 1 554E1E1C
P 5650 5700
F 0 "#PWR13" H 5650 5790 20  0001 C CNN
F 1 "+5V" H 5650 5790 30  0000 C CNN
F 2 "" H 5650 5700 60  0000 C CNN
F 3 "" H 5650 5700 60  0000 C CNN
	1    5650 5700
	1    0    0    -1  
$EndComp
Wire Wire Line
	4250 6150 4250 6500
Connection ~ 4250 6500
$Comp
L POT RV1
U 1 1 554E1E54
P 4200 6750
F 0 "RV1" H 4200 6650 50  0000 C CNN
F 1 "10K" H 4200 6750 50  0000 C CNN
F 2 "Potentiometers:Potentiometer_Bourns_3339P_Angular_ScrewUp" H 4200 6750 60  0001 C CNN
F 3 "" H 4200 6750 60  0000 C CNN
	1    4200 6750
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4050 6150 4050 6750
Wire Wire Line
	3550 7000 4200 7000
Connection ~ 3550 6300
$Comp
L GND #PWR14
U 1 1 554E2029
P 6000 2750
F 0 "#PWR14" H 6000 2750 30  0001 C CNN
F 1 "GND" H 6000 2680 30  0001 C CNN
F 2 "" H 6000 2750 60  0000 C CNN
F 3 "" H 6000 2750 60  0000 C CNN
	1    6000 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 1950 5850 2700
Wire Wire Line
	5850 2700 6250 2700
Wire Wire Line
	6000 2750 6000 2700
Connection ~ 6000 2700
$Comp
L GND #PWR17
U 1 1 554E20B1
P 6600 2050
F 0 "#PWR17" H 6600 2050 30  0001 C CNN
F 1 "GND" H 6600 1980 30  0001 C CNN
F 2 "" H 6600 2050 60  0000 C CNN
F 3 "" H 6600 2050 60  0000 C CNN
	1    6600 2050
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR16
U 1 1 554E2181
P 6600 1250
F 0 "#PWR16" H 6600 1200 20  0001 C CNN
F 1 "+12V" H 6600 1350 30  0000 C CNN
F 2 "" H 6600 1250 60  0000 C CNN
F 3 "" H 6600 1250 60  0000 C CNN
	1    6600 1250
	1    0    0    -1  
$EndComp
Text Notes 5950 1500 0    60   ~ 0
0-5V
Text Notes 7400 1600 0    60   ~ 0
0-10V
$Comp
L LM358 U3
U 1 1 554E9667
P 7150 3750
F 0 "U3" H 7100 3950 60  0000 L CNN
F 1 "LM358" H 7100 3500 60  0000 L CNN
F 2 "Sockets_DIP:DIP-8__300_ELL" H 7150 3750 60  0001 C CNN
F 3 "" H 7150 3750 60  0000 C CNN
	1    7150 3750
	-1   0    0    -1  
$EndComp
Wire Wire Line
	7200 1650 8000 1650
$Comp
L MOS_N Q1
U 1 1 554E9780
P 9600 1750
F 0 "Q1" H 9610 1920 60  0000 R CNN
F 1 "MOS_N" H 9610 1600 60  0000 R CNN
F 2 "Transistors_TO-220:TO-220_FET-GDS_Vertical" H 9600 1750 60  0001 C CNN
F 3 "" H 9600 1750 60  0000 C CNN
	1    9600 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	9000 1750 9400 1750
$Comp
L R R9
U 1 1 554E9801
P 9700 2750
F 0 "R9" V 9780 2750 40  0000 C CNN
F 1 "1" V 9707 2751 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_TO-220_Vertical" V 9630 2750 30  0001 C CNN
F 3 "" H 9700 2750 30  0000 C CNN
	1    9700 2750
	1    0    0    -1  
$EndComp
Wire Wire Line
	8000 1850 8000 2350
$Comp
L GND #PWR21
U 1 1 554E992B
P 8400 2150
F 0 "#PWR21" H 8400 2150 30  0001 C CNN
F 1 "GND" H 8400 2080 30  0001 C CNN
F 2 "" H 8400 2150 60  0000 C CNN
F 3 "" H 8400 2150 60  0000 C CNN
	1    8400 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	8000 2350 9700 2350
Wire Wire Line
	9700 1950 9700 2500
Connection ~ 9700 2350
$Comp
L GND #PWR24
U 1 1 554E99A7
P 9700 3100
F 0 "#PWR24" H 9700 3100 30  0001 C CNN
F 1 "GND" H 9700 3030 30  0001 C CNN
F 2 "" H 9700 3100 60  0000 C CNN
F 3 "" H 9700 3100 60  0000 C CNN
	1    9700 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 3000 9700 3100
$Comp
L +12V #PWR20
U 1 1 554E99F3
P 8400 1350
F 0 "#PWR20" H 8400 1300 20  0001 C CNN
F 1 "+12V" H 8400 1450 30  0000 C CNN
F 2 "" H 8400 1350 60  0000 C CNN
F 3 "" H 8400 1350 60  0000 C CNN
	1    8400 1350
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 1550 9700 1400
Wire Wire Line
	9700 1400 10000 1400
$Comp
L CONNECTOR P1
U 1 1 554E9A7F
P 10000 1400
F 0 "P1" H 10350 1500 70  0000 C CNN
F 1 "CONNECTOR" H 10350 1300 70  0000 C CNN
F 2 "Wire_Pads:SolderWirePad_single_2mmDrill" H 10000 1400 60  0001 C CNN
F 3 "" H 10000 1400 60  0000 C CNN
	1    10000 1400
	1    0    0    -1  
$EndComp
$Comp
L CONNECTOR P2
U 1 1 554E9ACE
P 10000 3050
F 0 "P2" H 10350 3150 70  0000 C CNN
F 1 "CONNECTOR" H 10350 2950 70  0000 C CNN
F 2 "Wire_Pads:SolderWirePad_single_2mmDrill" H 10000 3050 60  0001 C CNN
F 3 "" H 10000 3050 60  0000 C CNN
	1    10000 3050
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 3050 10000 3050
Connection ~ 9700 3050
Text Label 2300 5500 0    60   ~ 0
BTN_PLUS
Text Label 1650 4300 2    60   ~ 0
BTN_PLUS
Text Label 2300 6450 0    60   ~ 0
BTN_MOINS
Text Label 1650 4400 2    60   ~ 0
BTN_MOINS
Text Label 5150 6150 3    60   ~ 0
LCD_0
Text Label 5050 6150 3    60   ~ 0
LCD_1
Text Label 4950 6150 3    60   ~ 0
LCD_2
Text Label 4850 6150 3    60   ~ 0
LCD_3
Text Label 1650 3700 2    60   ~ 0
LCD_0
Text Label 1650 3600 2    60   ~ 0
LCD_1
Text Label 1650 3500 2    60   ~ 0
LCD_2
Text Label 1650 3400 2    60   ~ 0
LCD_3
Text Label 4350 6150 3    60   ~ 0
LCD_E
Text Label 4150 6150 3    60   ~ 0
LCD_RS
Text Label 1650 3800 2    60   ~ 0
LCD_E
Text Label 1650 3900 2    60   ~ 0
LCD_RS
$Comp
L +12V #PWR8
U 1 1 554EB65A
P 2350 3000
F 0 "#PWR8" H 2350 2950 20  0001 C CNN
F 1 "+12V" H 2350 3100 30  0000 C CNN
F 2 "" H 2350 3000 60  0000 C CNN
F 3 "" H 2350 3000 60  0000 C CNN
	1    2350 3000
	0    1    1    0   
$EndComp
$Comp
L +5V #PWR9
U 1 1 554EB797
P 2350 3300
F 0 "#PWR9" H 2350 3390 20  0001 C CNN
F 1 "+5V" H 2350 3390 30  0000 C CNN
F 2 "" H 2350 3300 60  0000 C CNN
F 3 "" H 2350 3300 60  0000 C CNN
	1    2350 3300
	0    1    1    0   
$EndComp
$Comp
L GND #PWR10
U 1 1 554EB8BC
P 2600 3200
F 0 "#PWR10" H 2600 3200 30  0001 C CNN
F 1 "GND" H 2600 3130 30  0001 C CNN
F 2 "" H 2600 3200 60  0000 C CNN
F 3 "" H 2600 3200 60  0000 C CNN
	1    2600 3200
	1    0    0    -1  
$EndComp
$Comp
L CONNECTOR P3
U 1 1 554EC124
P 9250 5500
F 0 "P3" H 9600 5600 70  0000 C CNN
F 1 "CONNECTOR" H 9600 5400 70  0000 C CNN
F 2 "Wire_Pads:SolderWirePad_single_2mmDrill" H 9250 5500 60  0001 C CNN
F 3 "" H 9250 5500 60  0000 C CNN
	1    9250 5500
	-1   0    0    1   
$EndComp
$Comp
L CONNECTOR P4
U 1 1 554EC39E
P 9250 5900
F 0 "P4" H 9600 6000 70  0000 C CNN
F 1 "CONNECTOR" H 9600 5800 70  0000 C CNN
F 2 "Wire_Pads:SolderWirePad_single_2mmDrill" H 9250 5900 60  0001 C CNN
F 3 "" H 9250 5900 60  0000 C CNN
	1    9250 5900
	-1   0    0    1   
$EndComp
$Comp
L +12V #PWR22
U 1 1 554EC418
P 9450 5450
F 0 "#PWR22" H 9450 5400 20  0001 C CNN
F 1 "+12V" H 9450 5550 30  0000 C CNN
F 2 "" H 9450 5450 60  0000 C CNN
F 3 "" H 9450 5450 60  0000 C CNN
	1    9450 5450
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR23
U 1 1 554EC45F
P 9450 5950
F 0 "#PWR23" H 9450 5950 30  0001 C CNN
F 1 "GND" H 9450 5880 30  0001 C CNN
F 2 "" H 9450 5950 60  0000 C CNN
F 3 "" H 9450 5950 60  0000 C CNN
	1    9450 5950
	1    0    0    -1  
$EndComp
Wire Wire Line
	9250 5500 9450 5500
Wire Wire Line
	9450 5500 9450 5450
Wire Wire Line
	9250 5900 9450 5900
Wire Wire Line
	9450 5900 9450 5950
Text Notes 8500 5750 2    60   ~ 0
12V\nPower Input
Text Notes 10250 2300 0    60   ~ 0
Device Under Test\nLoad
$Comp
L LM358 U2
U 2 1 554EC832
P 8500 1750
F 0 "U2" H 8450 1950 60  0000 L CNN
F 1 "LM358" H 8450 1500 60  0000 L CNN
F 2 "Sockets_DIP:DIP-8__300_ELL" H 8500 1750 60  0001 C CNN
F 3 "" H 8500 1750 60  0000 C CNN
	2    8500 1750
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 554EC991
P 6400 3750
F 0 "R7" V 6480 3750 40  0000 C CNN
F 1 "10K" V 6407 3751 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 6330 3750 30  0001 C CNN
F 3 "" H 6400 3750 30  0000 C CNN
	1    6400 3750
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 554ECA25
P 6150 4000
F 0 "R5" V 6230 4000 40  0000 C CNN
F 1 "10K" V 6157 4001 40  0000 C CNN
F 2 "Resistors_ThroughHole:Resistor_Horizontal_RM10mm" V 6080 4000 30  0001 C CNN
F 3 "" H 6150 4000 30  0000 C CNN
	1    6150 4000
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR15
U 1 1 554ECA86
P 6150 4250
F 0 "#PWR15" H 6150 4250 30  0001 C CNN
F 1 "GND" H 6150 4180 30  0001 C CNN
F 2 "" H 6150 4250 60  0000 C CNN
F 3 "" H 6150 4250 60  0000 C CNN
	1    6150 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 3750 6150 3750
Wire Wire Line
	6650 3750 6650 4350
Wire Wire Line
	6650 4350 7650 4350
Wire Wire Line
	7650 4350 7650 3850
$Comp
L GND #PWR19
U 1 1 554ECC7C
P 7250 4150
F 0 "#PWR19" H 7250 4150 30  0001 C CNN
F 1 "GND" H 7250 4080 30  0001 C CNN
F 2 "" H 7250 4150 60  0000 C CNN
F 3 "" H 7250 4150 60  0000 C CNN
	1    7250 4150
	1    0    0    -1  
$EndComp
$Comp
L +12V #PWR18
U 1 1 554ECCB5
P 7250 3350
F 0 "#PWR18" H 7250 3300 20  0001 C CNN
F 1 "+12V" H 7250 3450 30  0000 C CNN
F 2 "" H 7250 3350 60  0000 C CNN
F 3 "" H 7250 3350 60  0000 C CNN
	1    7250 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	7650 3650 8400 3650
Wire Wire Line
	8400 3650 8400 2350
Connection ~ 8400 2350
Text Notes 7950 3600 0    60   ~ 0
0-10V
Text Notes 5950 3700 0    60   ~ 0
0-5V
Text Label 5350 3750 2    60   ~ 0
V_SENSE
Text Label 2350 4100 0    60   ~ 0
V_SENSE
Text Label 1650 4100 2    60   ~ 0
V_SET
Text Label 5350 1550 2    60   ~ 0
V_SET
$Comp
L PWR_FLAG #FLG1
U 1 1 554EEB25
P 9450 5500
F 0 "#FLG1" H 9450 5595 30  0001 C CNN
F 1 "PWR_FLAG" H 9450 5680 30  0000 C CNN
F 2 "" H 9450 5500 60  0000 C CNN
F 3 "" H 9450 5500 60  0000 C CNN
	1    9450 5500
	0    1    1    0   
$EndComp
Wire Wire Line
	4250 6500 4200 6500
Connection ~ 4200 6500
Wire Wire Line
	3850 6150 3850 6550
Connection ~ 3850 6500
Wire Notes Line
	500  5000 11200 5000
Wire Notes Line
	7000 5000 7000 6500
Wire Notes Line
	3700 500  3700 5000
Text Notes 7100 6450 0    60   Italic 0
Power connection
Text Notes 550  7700 0    60   Italic 0
User Interface
Text Notes 600  4900 0    60   Italic 0
Arduino\n(yes, overkill)
Text Notes 6600 4550 0    60   Italic 0
Voltage sensor
Text Notes 6050 2900 0    60   Italic 0
PWM conversion
Text Notes 9450 2800 0    60   ~ 0
25W
Text Notes 8600 2500 0    60   Italic 0
Follower
Text Notes 3800 4850 0    60   Italic 0
Constant Current Load
$Comp
L LM358 U3
U 2 1 554F8726
P 10200 4300
F 0 "U3" H 10150 4500 60  0000 L CNN
F 1 "LM358" H 10150 4050 60  0000 L CNN
F 2 "Sockets_DIP:DIP-8__300_ELL" H 10200 4300 60  0001 C CNN
F 3 "" H 10200 4300 60  0000 C CNN
	2    10200 4300
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 4200 9700 4400
NoConn ~ 10100 3900
NoConn ~ 10700 4300
NoConn ~ 10100 4700
$Comp
L Arduino_Nano_Header J1
U 1 1 55513026
P 2000 3700
F 0 "J1" H 2000 4500 60  0000 C CNN
F 1 "Arduino_Nano_Header" H 2000 2900 60  0000 C CNN
F 2 "w_conn:arduino_nano_header" H 2000 3700 60  0001 C CNN
F 3 "" H 2000 3700 60  0000 C CNN
	1    2000 3700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR3
U 1 1 55513CFC
P 1250 3350
F 0 "#PWR3" H 1250 3350 30  0001 C CNN
F 1 "GND" H 1250 3280 30  0001 C CNN
F 2 "" H 1250 3350 60  0000 C CNN
F 3 "" H 1250 3350 60  0000 C CNN
	1    1250 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	2350 3100 2600 3100
Wire Wire Line
	2600 3100 2600 3200
Wire Wire Line
	1650 3300 1250 3300
Wire Wire Line
	1250 3300 1250 3350
NoConn ~ 1650 3000
NoConn ~ 1650 3100
NoConn ~ 1650 3200
NoConn ~ 2350 3200
NoConn ~ 1650 4000
NoConn ~ 2350 3400
NoConn ~ 2350 3500
NoConn ~ 2350 3600
NoConn ~ 2350 3700
NoConn ~ 2350 3800
NoConn ~ 2350 3900
NoConn ~ 2350 4000
NoConn ~ 2350 4200
NoConn ~ 2350 4300
NoConn ~ 2350 4400
$Comp
L NPN Q2
U 1 1 55560CFE
P 1900 1650
F 0 "Q2" H 1900 1500 50  0000 R CNN
F 1 "2N2222" H 1900 1800 50  0000 R CNN
F 2 "" H 1900 1650 60  0000 C CNN
F 3 "" H 1900 1650 60  0000 C CNN
	1    1900 1650
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 55560D64
P 1450 1650
F 0 "R10" V 1530 1650 40  0000 C CNN
F 1 "1K" V 1457 1651 40  0000 C CNN
F 2 "" V 1380 1650 30  0000 C CNN
F 3 "" H 1450 1650 30  0000 C CNN
	1    1450 1650
	0    1    1    0   
$EndComp
$Comp
L DIODE D1
U 1 1 55560DCF
P 2000 1250
F 0 "D1" H 2000 1350 40  0000 C CNN
F 1 "1N4007" H 2000 1150 40  0000 C CNN
F 2 "" H 2000 1250 60  0000 C CNN
F 3 "" H 2000 1250 60  0000 C CNN
	1    2000 1250
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR5
U 1 1 55560E3A
P 2000 2000
F 0 "#PWR5" H 2000 2000 30  0001 C CNN
F 1 "GND" H 2000 1930 30  0001 C CNN
F 2 "" H 2000 2000 60  0000 C CNN
F 3 "" H 2000 2000 60  0000 C CNN
	1    2000 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2000 1850 2000 2000
$Comp
L +12V #PWR4
U 1 1 55560EEE
P 2000 1050
F 0 "#PWR4" H 2000 1000 20  0001 C CNN
F 1 "+12V" H 2000 1150 30  0000 C CNN
F 2 "" H 2000 1050 60  0000 C CNN
F 3 "" H 2000 1050 60  0000 C CNN
	1    2000 1050
	1    0    0    -1  
$EndComp
$Comp
L CONN_01X02 P5
U 1 1 55560FD7
P 2650 1250
F 0 "P5" H 2650 1400 50  0000 C CNN
F 1 "CONN_01X02" V 2750 1250 50  0000 C CNN
F 2 "" H 2650 1250 60  0000 C CNN
F 3 "" H 2650 1250 60  0000 C CNN
	1    2650 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2000 1050 2450 1050
Wire Wire Line
	2450 1050 2450 1200
Wire Wire Line
	2000 1450 2450 1450
Wire Wire Line
	2450 1450 2450 1300
Text Label 1200 1650 2    60   ~ 0
FAN
Text Notes 2800 1350 0    60   ~ 0
FAN\nmotor
Text Label 1650 4200 2    60   ~ 0
FAN
Wire Notes Line
	3700 2450 500  2450
Text Notes 600  2400 0    60   Italic 0
Fan control
Wire Wire Line
	1500 5500 1500 5350
Wire Wire Line
	1500 6450 1500 6300
$EndSCHEMATC