EESchema Schematic File Version 2 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:lf1600-cache EELAYER 27 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 4 5 Title "Xytronic LF-1600 - Heater power supply" Date "6 sep 2015" Rev "1.0" Comp "Reverse engineered by Michael Büsch " Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L MOC3041M U5 U 1 1 5496ADF9 P 4950 2750 F 0 "U5" H 4740 2940 40 0000 C CNN F 1 "MOC3041" H 5040 2560 40 0000 C CNN F 2 "DIP6" H 4750 2570 30 0000 C CIN F 3 "~" H 4950 2750 60 0000 C CNN 1 4950 2750 1 0 0 -1 $EndComp $Comp L TRIAC U? U 1 1 5496AE5E P 6500 2650 F 0 "U?" H 6250 3000 70 0000 C CNN F 1 "BTA12-600C" H 6200 2400 60 0000 C CNN F 2 "~" H 6500 2650 60 0000 C CNN F 3 "~" H 6500 2650 60 0000 C CNN 1 6500 2650 1 0 0 -1 $EndComp $Comp L CONN_2 J2 U 1 1 5496B0E2 P 2700 4250 F 0 "J2" V 2650 4250 40 0000 C CNN F 1 "V_OUT" V 2750 4250 40 0000 C CNN F 2 "" H 2700 4250 60 0000 C CNN F 3 "" H 2700 4250 60 0000 C CNN 1 2700 4250 -1 0 0 1 $EndComp $Comp L R R24 U 1 1 5496B0E8 P 6050 4350 F 0 "R24" V 6130 4350 40 0000 C CNN F 1 "0.1" V 6057 4351 40 0000 C CNN F 2 "~" V 5980 4350 30 0000 C CNN F 3 "~" H 6050 4350 30 0000 C CNN 1 6050 4350 0 -1 -1 0 $EndComp Text GLabel 8350 4350 2 60 Input ~ 0 GND $Comp L DIODE D7 U 1 1 5496B0F1 P 5550 4700 F 0 "D7" H 5550 4800 40 0000 C CNN F 1 "DIODE" H 5550 4600 40 0000 C CNN F 2 "~" H 5550 4700 60 0000 C CNN F 3 "~" H 5550 4700 60 0000 C CNN 1 5550 4700 0 1 1 0 $EndComp $Comp L C C13 U 1 1 5496B0F9 P 5550 5300 F 0 "C13" H 5550 5400 40 0000 L CNN F 1 "1 µF / 50 V / NP" H 5556 5215 40 0000 L CNN F 2 "~" H 5588 5150 30 0000 C CNN F 3 "~" H 5550 5300 60 0000 C CNN 1 5550 5300 1 0 0 -1 $EndComp Text GLabel 4450 2650 0 60 Input ~ 0 +5V $Comp L R R21 U 1 1 5496FF69 P 5450 2250 F 0 "R21" V 5530 2250 40 0000 C CNN F 1 "51" V 5457 2251 40 0000 C CNN F 2 "~" V 5380 2250 30 0000 C CNN F 3 "~" H 5450 2250 30 0000 C CNN 1 5450 2250 1 0 0 -1 $EndComp Text GLabel 5450 1800 1 60 Input ~ 0 24V Text GLabel 6500 1800 1 60 Input ~ 0 24V $Comp L C C6 U 1 1 54970334 P 7250 3250 F 0 "C6" H 7250 3350 40 0000 L CNN F 1 "0.1 µF / 100 V" H 7256 3165 40 0000 L CNN F 2 "~" H 7288 3100 30 0000 C CNN F 3 "~" H 7250 3250 60 0000 C CNN 1 7250 3250 -1 0 0 1 $EndComp $Comp L R R22 U 1 1 5497035D P 7250 2300 F 0 "R22" V 7330 2300 40 0000 C CNN F 1 "100" V 7257 2301 40 0000 C CNN F 2 "~" V 7180 2300 30 0000 C CNN F 3 "~" H 7250 2300 30 0000 C CNN 1 7250 2300 -1 0 0 1 $EndComp Text GLabel 7250 1800 1 60 Input ~ 0 24V $Comp L R R? U 1 1 549491CE P 3950 2850 F 0 "R?" V 4030 2850 40 0000 C CNN F 1 "390" V 3957 2851 40 0000 C CNN F 2 "~" V 3880 2850 30 0000 C CNN F 3 "~" H 3950 2850 30 0000 C CNN 1 3950 2850 0 1 1 0 $EndComp Text HLabel 2850 2850 0 60 Input ~ 0 heater_on $Comp L R R25 U 1 1 5494E6B0 P 5200 5350 F 0 "R25" V 5280 5350 40 0000 C CNN F 1 "10 k" V 5207 5351 40 0000 C CNN F 2 "~" V 5130 5350 30 0000 C CNN F 3 "~" H 5200 5350 30 0000 C CNN 1 5200 5350 1 0 0 -1 $EndComp $Comp L R R26 U 1 1 5494E6BF P 6400 5350 F 0 "R26" V 6480 5350 40 0000 C CNN F 1 "10 k" V 6407 5351 40 0000 C CNN F 2 "~" V 6330 5350 30 0000 C CNN F 3 "~" H 6400 5350 30 0000 C CNN 1 6400 5350 1 0 0 -1 $EndComp $Comp L C C14 U 1 1 5494E6F2 P 6750 6000 F 0 "C14" H 6750 6100 40 0000 L CNN F 1 "100 nF" H 6756 5915 40 0000 L CNN F 2 "~" H 6788 5850 30 0000 C CNN F 3 "~" H 6750 6000 60 0000 C CNN 1 6750 6000 1 0 0 -1 $EndComp Text GLabel 6750 6300 3 60 Input ~ 0 GND Wire Wire Line 6300 4350 8350 4350 Wire Wire Line 3050 4350 5800 4350 Wire Wire Line 5550 4500 5550 4350 Connection ~ 5550 4350 Wire Wire Line 4450 2650 4600 2650 Wire Wire Line 5300 2850 6000 2850 Wire Wire Line 5450 2500 5450 2650 Wire Wire Line 5450 2650 5300 2650 Wire Wire Line 5450 1800 5450 2000 Wire Wire Line 6500 1800 6500 2250 Wire Wire Line 3050 4150 7250 4150 Wire Wire Line 6500 4150 6500 2900 Connection ~ 6500 4150 Wire Wire Line 7250 2550 7250 3050 Wire Wire Line 7250 2050 7250 1800 Wire Wire Line 4200 2850 4600 2850 Wire Wire Line 2850 2850 3700 2850 Wire Wire Line 6750 6300 6750 6200 Wire Wire Line 6400 5600 6400 5700 Wire Wire Line 6400 5000 6400 5100 $Comp L R R27 U 1 1 5494E9CA P 6400 5950 F 0 "R27" V 6480 5950 40 0000 C CNN F 1 "100 k" V 6407 5951 40 0000 C CNN F 2 "~" V 6330 5950 30 0000 C CNN F 3 "~" H 6400 5950 30 0000 C CNN 1 6400 5950 1 0 0 -1 $EndComp $Comp L R R28 U 1 1 5494E9D9 P 7300 5650 F 0 "R28" V 7380 5650 40 0000 C CNN F 1 "10 k" V 7307 5651 40 0000 C CNN F 2 "~" V 7230 5650 30 0000 C CNN F 3 "~" H 7300 5650 30 0000 C CNN 1 7300 5650 0 -1 -1 0 $EndComp Wire Wire Line 6400 5650 7050 5650 Connection ~ 6400 5650 Text GLabel 6400 6300 3 60 Input ~ 0 GND Wire Wire Line 6400 6200 6400 6300 Text GLabel 5200 5700 3 60 Input ~ 0 GND Wire Wire Line 5200 5600 5200 5700 Text GLabel 5550 5700 3 60 Input ~ 0 GND Wire Wire Line 5550 5500 5550 5700 Wire Wire Line 5550 4900 5550 5100 Wire Wire Line 5200 5000 6400 5000 Connection ~ 5550 5000 Wire Wire Line 6750 5650 6750 5800 Connection ~ 6750 5650 Text Notes 5900 4500 0 60 ~ 0 shunt Text HLabel 8700 5650 2 60 Input ~ 0 current_measure Wire Wire Line 7550 5650 8700 5650 Wire Wire Line 5200 5100 5200 5000 Text Notes 950 4300 0 60 ~ 0 Heater elem. R 3.5 Ohms @ 20 °C Wire Wire Line 7250 4150 7250 3450 Text Notes 7100 5150 0 60 ~ 0 Fix:\nThe input to the ADC needs to be of low impedance\nto help charging the ADC capacitor quickly.\nSo R28 was removed (bridged). Wire Wire Line 7000 5650 7000 5450 Wire Wire Line 7000 5450 7600 5450 Wire Wire Line 7600 5450 7600 5650 Connection ~ 7600 5650 Connection ~ 7000 5650 $EndSCHEMATC