EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L Device:R R? U 1 1 612C680D P 5200 2050 F 0 "R?" H 5270 2096 50 0000 L CNN F 1 "22k" H 5270 2005 50 0000 L CNN F 2 "" V 5130 2050 50 0001 C CNN F 3 "~" H 5200 2050 50 0001 C CNN 1 5200 2050 1 0 0 -1 $EndComp Wire Wire Line 5200 1350 5200 1900 $Comp L Device:R R? U 1 1 612C6836 P 5700 2650 F 0 "R?" H 5500 2700 50 0000 L CNN F 1 "1.1k" H 5450 2600 50 0000 L CNN F 2 "" V 5630 2650 50 0001 C CNN F 3 "~" H 5700 2650 50 0001 C CNN 1 5700 2650 1 0 0 -1 $EndComp Wire Wire Line 5700 2450 5700 2500 Wire Wire Line 5700 1450 5700 1350 Wire Wire Line 5700 1850 5700 2050 Wire Wire Line 5200 2200 5200 2250 Connection ~ 5200 2250 $Comp L Device:D_Zener D? U 1 1 61328DE2 P 5200 2650 F 0 "D?" V 5154 2730 50 0000 L CNN F 1 "12V" V 5245 2730 50 0000 L CNN F 2 "" H 5200 2650 50 0001 C CNN F 3 "~" H 5200 2650 50 0001 C CNN 1 5200 2650 0 1 1 0 $EndComp $Comp L Device:R R? U 1 1 61336070 P 6250 2050 F 0 "R?" H 6320 2096 50 0000 L CNN F 1 "100k" H 6320 2005 50 0000 L CNN F 2 "" V 6180 2050 50 0001 C CNN F 3 "~" H 6250 2050 50 0001 C CNN 1 6250 2050 1 0 0 -1 $EndComp Wire Wire Line 6250 1900 6250 1650 Wire Wire Line 5200 2250 5400 2250 Wire Wire Line 5200 2500 5200 2250 $Comp L Device:D_Zener D? U 1 1 6134A7DC P 6250 2650 F 0 "D?" V 6204 2730 50 0000 L CNN F 1 "12V" V 6295 2730 50 0000 L CNN F 2 "" H 6250 2650 50 0001 C CNN F 3 "~" H 6250 2650 50 0001 C CNN 1 6250 2650 0 1 1 0 $EndComp Wire Wire Line 6250 2200 6250 2500 $Comp L Device:Q_PNP_BEC Q? U 1 1 61356A61 P 5800 1650 F 0 "Q?" H 5991 1604 50 0000 L CNN F 1 "BC806B" H 5991 1695 50 0000 L CNN F 2 "" H 6000 1750 50 0001 C CNN F 3 "~" H 5800 1650 50 0001 C CNN 1 5800 1650 -1 0 0 1 $EndComp $Comp L Transformer:PT61017PEL TR? U 1 1 612CBC1A P 5050 4800 F 0 "TR?" H 5050 4258 50 0000 C CNN F 1 "HX1188FNL" H 5050 4349 50 0000 C CNN F 2 "Transformer_SMD:Transformer_Ethernet_Bourns_PT61017PEL" H 5050 4300 50 0001 C CNN F 3 "https://www.bourns.com/docs/Product-Datasheets/PT61017PEL.pdf" H 4350 5150 50 0001 C CNN 1 5050 4800 1 0 0 1 $EndComp $Comp L Connector:RJ45_LED_Shielded J? U 1 1 612DF83D P 3200 4800 F 0 "J?" H 3200 5375 50 0000 C CNN F 1 "RJ45" H 3200 5466 50 0000 C CNN F 2 "" V 3200 4825 50 0001 C CNN F 3 "~" V 3200 4825 50 0001 C CNN 1 3200 4800 1 0 0 1 $EndComp Wire Wire Line 3600 4500 4650 4500 Wire Wire Line 3600 4600 4000 4600 Wire Wire Line 4000 4600 4000 4700 Wire Wire Line 4000 4700 4650 4700 Wire Wire Line 3600 4700 3950 4700 Wire Wire Line 3950 4700 3950 4900 Wire Wire Line 3950 4900 4650 4900 Wire Wire Line 3600 5000 3950 5000 Wire Wire Line 3950 5000 3950 5100 Wire Wire Line 3950 5100 4650 5100 Wire Wire Line 3600 4800 3700 4800 Wire Wire Line 3700 4800 3700 4850 Wire Wire Line 3700 4900 3600 4900 Wire Wire Line 3600 5100 3700 5100 Wire Wire Line 3700 5100 3700 5150 Wire Wire Line 3700 5200 3600 5200 Wire Wire Line 3700 4850 3900 4850 Wire Wire Line 3900 4850 3900 5400 Connection ~ 3700 4850 Wire Wire Line 3700 4850 3700 4900 Wire Wire Line 3700 5150 3800 5150 Wire Wire Line 3800 5150 3800 5500 Connection ~ 3700 5150 Wire Wire Line 3700 5150 3700 5200 Text Label 4050 5000 0 50 ~ 0 CENTER_RX Text Label 4600 5400 2 50 ~ 0 SPARE_A Wire Wire Line 3900 5400 4600 5400 Wire Wire Line 3800 5500 4600 5500 Text Label 4600 5500 2 50 ~ 0 SPARE_B Wire Wire Line 4650 4600 4050 4600 Text Label 4050 4600 0 50 ~ 0 ISO_CENTER_TX Text Label 5800 5100 2 50 ~ 0 RX_N Text Label 5800 4900 2 50 ~ 0 RX_P Text Label 5800 4500 2 50 ~ 0 TX_P Text Label 5800 4700 2 50 ~ 0 TX_N Text Label 6950 5000 2 50 ~ 0 VREF $Comp L Device:R R? U 1 1 6138B816 P 6450 4900 F 0 "R?" V 6400 5050 50 0000 C CNN F 1 "47" V 6450 4900 50 0000 C CNN F 2 "" V 6380 4900 50 0001 C CNN F 3 "~" H 6450 4900 50 0001 C CNN 1 6450 4900 0 1 1 0 $EndComp $Comp L Device:R R? U 1 1 6138B3D3 P 6050 4900 F 0 "R?" V 6000 5050 50 0000 C CNN F 1 "150" V 6050 4900 50 0000 C CNN F 2 "" V 5980 4900 50 0001 C CNN F 3 "~" H 6050 4900 50 0001 C CNN 1 6050 4900 0 1 1 0 $EndComp Wire Wire Line 5450 4700 5800 4700 Wire Wire Line 5450 4900 5900 4900 Wire Wire Line 6200 4900 6250 4900 Wire Wire Line 6600 4900 6700 4900 Wire Wire Line 6700 5000 6700 4900 Wire Wire Line 5450 5000 6700 5000 Wire Wire Line 6950 5000 6700 5000 Connection ~ 6700 5000 Wire Wire Line 6250 4900 6250 4700 Wire Wire Line 6250 4700 6950 4700 Connection ~ 6250 4900 Wire Wire Line 6250 4900 6300 4900 $Comp L Device:R R? U 1 1 613DE5E8 P 6450 5100 F 0 "R?" V 6500 5250 50 0000 C CNN F 1 "47" V 6450 5100 50 0000 C CNN F 2 "" V 6380 5100 50 0001 C CNN F 3 "~" H 6450 5100 50 0001 C CNN 1 6450 5100 0 1 -1 0 $EndComp $Comp L Device:R R? U 1 1 613DE71E P 6050 5100 F 0 "R?" V 6100 5250 50 0000 C CNN F 1 "150" V 6050 5100 50 0000 C CNN F 2 "" V 5980 5100 50 0001 C CNN F 3 "~" H 6050 5100 50 0001 C CNN 1 6050 5100 0 1 -1 0 $EndComp Wire Wire Line 6200 5100 6250 5100 Wire Wire Line 6600 5100 6700 5100 Wire Wire Line 6700 5000 6700 5100 Wire Wire Line 6250 5100 6250 5300 Connection ~ 6250 5100 Wire Wire Line 6250 5100 6300 5100 Wire Wire Line 5450 5100 5900 5100 Wire Wire Line 6250 5300 6950 5300 $Comp L Device:R R? U 1 1 613EAEA9 P 6250 5550 F 0 "R?" H 6180 5504 50 0000 R CNN F 1 "10k" H 6180 5595 50 0000 R CNN F 2 "" V 6180 5550 50 0001 C CNN F 3 "~" H 6250 5550 50 0001 C CNN 1 6250 5550 1 0 0 1 $EndComp Wire Wire Line 6250 5400 6250 5300 Connection ~ 6250 5300 Wire Wire Line 6250 5700 6250 5800 $Comp L power:GND #PWR? U 1 1 613EFD79 P 6250 5800 F 0 "#PWR?" H 6250 5550 50 0001 C CNN F 1 "GND" H 6255 5627 50 0000 C CNN F 2 "" H 6250 5800 50 0001 C CNN F 3 "" H 6250 5800 50 0001 C CNN 1 6250 5800 1 0 0 -1 $EndComp Wire Wire Line 5450 4500 5800 4500 Text Notes 6300 5600 0 50 ~ 0 TODO: check whether adding\nthis resistor to _N is OK. Text Label 6950 4700 2 50 ~ 0 LV_RX_P Text Label 6950 5300 2 50 ~ 0 LV_RX_N Text Label 4050 4500 0 50 ~ 0 ISO_TX_P Text Label 4050 4700 0 50 ~ 0 ISO_TX_N Text Label 4050 4900 0 50 ~ 0 ISO_RX_P Text Label 4050 5100 0 50 ~ 0 ISO_RX_N Wire Wire Line 4050 5000 4650 5000 Wire Wire Line 9200 1350 9350 1350 Wire Wire Line 9350 1350 9350 1400 Wire Wire Line 9850 2200 9850 2150 Connection ~ 9850 2200 Wire Wire Line 9700 2200 9850 2200 Wire Wire Line 9700 1950 9700 2200 Wire Wire Line 9100 1950 9700 1950 $Comp L Device:C C? U 1 1 614B991E P 7100 2050 F 0 "C?" H 7215 2096 50 0000 L CNN F 1 "100n" H 7215 2005 50 0000 L CNN F 2 "" H 7138 1900 50 0001 C CNN F 3 "~" H 7100 2050 50 0001 C CNN 1 7100 2050 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6149E08E P 7500 2200 F 0 "R?" H 7570 2246 50 0000 L CNN F 1 "R" H 7570 2155 50 0000 L CNN F 2 "" V 7430 2200 50 0001 C CNN F 3 "~" H 7500 2200 50 0001 C CNN 1 7500 2200 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6149DF5E P 7500 1650 F 0 "R?" H 7570 1696 50 0000 L CNN F 1 "R" H 7570 1605 50 0000 L CNN F 2 "" V 7430 1650 50 0001 C CNN F 3 "~" H 7500 1650 50 0001 C CNN 1 7500 1650 1 0 0 -1 $EndComp Wire Wire Line 7800 1750 7900 1750 Wire Wire Line 8200 1750 8300 1750 $Comp L Device:R R? U 1 1 61482689 P 8050 1750 F 0 "R?" V 8100 1600 50 0000 C CNN F 1 "R" V 8050 1750 50 0000 C CNN F 2 "" V 7980 1750 50 0001 C CNN F 3 "~" H 8050 1750 50 0001 C CNN 1 8050 1750 0 -1 -1 0 $EndComp Wire Wire Line 9500 2150 9600 2150 Wire Wire Line 9200 2150 9100 2150 $Comp L Device:C C? U 1 1 61479945 P 9350 2150 F 0 "C?" V 9098 2150 50 0000 C CNN F 1 "1u" V 9189 2150 50 0000 C CNN F 2 "" H 9388 2000 50 0001 C CNN F 3 "~" H 9350 2150 50 0001 C CNN 1 9350 2150 0 1 1 0 $EndComp Wire Wire Line 8650 2450 8700 2450 Connection ~ 8650 2450 Wire Wire Line 8700 2450 8700 2350 Wire Wire Line 8600 2450 8650 2450 Wire Wire Line 8600 2350 8600 2450 Wire Wire Line 9850 1750 9750 1750 Wire Wire Line 9850 1850 9850 1750 Wire Wire Line 9850 2250 9850 2200 $Comp L Device:R R? U 1 1 61468FE0 P 9850 2400 F 0 "R?" H 9920 2446 50 0000 L CNN F 1 "R" H 9920 2355 50 0000 L CNN F 2 "" V 9780 2400 50 0001 C CNN F 3 "~" H 9850 2400 50 0001 C CNN 1 9850 2400 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 61468857 P 9850 2000 F 0 "R?" H 9920 2046 50 0000 L CNN F 1 "R" H 9920 1955 50 0000 L CNN F 2 "" V 9780 2000 50 0001 C CNN F 3 "~" H 9850 2000 50 0001 C CNN 1 9850 2000 1 0 0 -1 $EndComp Connection ~ 9350 1750 Wire Wire Line 9450 1750 9350 1750 $Comp L Device:L L? U 1 1 614653CA P 9600 1750 F 0 "L?" V 9700 1750 50 0000 C CNN F 1 "L" V 9550 1750 50 0000 C CNN F 2 "" H 9600 1750 50 0001 C CNN F 3 "~" H 9600 1750 50 0001 C CNN 1 9600 1750 0 -1 -1 0 $EndComp Wire Wire Line 9200 1650 9200 1350 Wire Wire Line 9100 1650 9200 1650 Wire Wire Line 9350 1750 9100 1750 Wire Wire Line 9350 1700 9350 1750 $Comp L Device:C C? U 1 1 6145B91B P 9350 1550 F 0 "C?" H 9465 1596 50 0000 L CNN F 1 "10n" H 9465 1505 50 0000 L CNN F 2 "" H 9388 1400 50 0001 C CNN F 3 "~" H 9350 1550 50 0001 C CNN 1 9350 1550 1 0 0 -1 $EndComp $Comp L Regulator_Switching:LM5017SD U? U 1 1 61457E6E P 8700 1850 F 0 "U?" H 8700 2317 50 0000 C CNN F 1 "LM5018SD" H 8700 2226 50 0000 C CNN F 2 "Package_SON:WSON-8_4x4mm_P0.8mm" H 8750 1400 50 0001 L CIN F 3 "http://www.ti.com/lit/ds/symlink/lm5017.pdf" H 8700 1850 50 0001 C CNN 1 8700 1850 1 0 0 -1 $EndComp Wire Wire Line 7100 1350 7100 1900 Wire Wire Line 8200 1350 8200 1650 Wire Wire Line 8200 1650 8300 1650 Connection ~ 7100 1350 Wire Wire Line 7800 1350 7800 1750 Connection ~ 7800 1350 Wire Wire Line 7800 1350 8200 1350 Wire Wire Line 7500 1500 7500 1350 Wire Wire Line 7500 1350 7800 1350 Wire Wire Line 8300 1950 7500 1950 Wire Wire Line 7500 1950 7500 1800 Wire Wire Line 7500 1950 7500 2050 Connection ~ 7500 1950 Connection ~ 9850 1750 $Comp L Device:C C? U 1 1 6158FD82 P 6750 2050 F 0 "C?" H 6865 2096 50 0000 L CNN F 1 "1u" H 6850 2000 50 0000 L CNN F 2 "" H 6788 1900 50 0001 C CNN F 3 "~" H 6750 2050 50 0001 C CNN 1 6750 2050 1 0 0 -1 $EndComp Wire Wire Line 6750 1350 6750 1900 Connection ~ 6750 1350 Wire Wire Line 6750 1350 7100 1350 Wire Wire Line 7100 1350 7500 1350 Connection ~ 7500 1350 Wire Wire Line 10050 1350 9850 1350 Text Notes 5800 1200 0 50 ~ 10 POE Power Supply Text Notes 5700 1350 2 50 ~ 0 POE Identification Wire Wire Line 9850 1750 9850 1350 Text Notes 8600 1350 0 50 ~ 0 SMPS Wire Notes Line 5800 2550 5800 2750 Wire Notes Line 5800 2750 5750 2700 Wire Notes Line 5800 2750 5850 2700 Wire Notes Line 5500 2550 5350 2150 Text Notes 5250 2450 0 50 ~ 0 POE +\ntyp R Text Notes 5850 2750 0 50 ~ 0 POE-CC\nClass 1\n4W PD\n10 mA $Comp L Device:R R? U 1 1 61726B86 P 2750 5400 F 0 "R?" H 2820 5446 50 0000 L CNN F 1 "470" H 2820 5355 50 0000 L CNN F 2 "" V 2680 5400 50 0001 C CNN F 3 "~" H 2750 5400 50 0001 C CNN 1 2750 5400 1 0 0 -1 $EndComp Text Label 2200 4500 0 50 ~ 0 LED_GN Wire Wire Line 2200 4500 2800 4500 Text Label 2200 5100 0 50 ~ 0 LED_RED Wire Wire Line 2200 5100 2800 5100 $Comp L Device:R R? U 1 1 6175C20B P 2550 5400 F 0 "R?" H 2350 5450 50 0000 L CNN F 1 "470" H 2350 5350 50 0000 L CNN F 2 "" V 2480 5400 50 0001 C CNN F 3 "~" H 2550 5400 50 0001 C CNN 1 2550 5400 1 0 0 -1 $EndComp Wire Wire Line 2750 5250 2750 5200 Wire Wire Line 2750 5200 2800 5200 Wire Wire Line 2550 5250 2550 4600 Wire Wire Line 2550 4600 2800 4600 Wire Wire Line 2550 5550 2550 5650 Wire Wire Line 2550 5650 2650 5650 Wire Wire Line 2750 5650 2750 5550 Wire Wire Line 2650 5650 2650 5750 Connection ~ 2650 5650 Wire Wire Line 2650 5650 2750 5650 $Comp L power:GND #PWR? U 1 1 61788117 P 2650 5750 F 0 "#PWR?" H 2650 5500 50 0001 C CNN F 1 "GND" H 2655 5577 50 0000 C CNN F 2 "" H 2650 5750 50 0001 C CNN F 3 "" H 2650 5750 50 0001 C CNN 1 2650 5750 1 0 0 -1 $EndComp NoConn ~ 3200 4300 Text Notes 2150 1350 0 50 ~ 0 Rectifier Wire Notes Line 10400 1100 850 1100 Wire Notes Line 10400 1250 850 1250 Wire Notes Line 850 1100 850 3000 Text Label 3950 1450 0 50 ~ 0 POE+ Wire Wire Line 950 2100 1350 2100 Wire Wire Line 3700 2100 3400 2100 Text Label 3700 2100 2 50 ~ 0 SPARE_A Wire Wire Line 2450 2100 2800 2100 Text Label 2450 2100 0 50 ~ 0 SPARE_A Wire Wire Line 2350 2100 1950 2100 Text Label 2350 2100 2 50 ~ 0 CENTER_TX Text Label 950 2100 0 50 ~ 0 CENTER_TX Text Label 1850 5050 2 50 ~ 0 VREF $Comp L power:GND #PWR? U 1 1 61314799 P 1350 5500 F 0 "#PWR?" H 1350 5250 50 0001 C CNN F 1 "GND" H 1355 5327 50 0000 C CNN F 2 "" H 1350 5500 50 0001 C CNN F 3 "" H 1350 5500 50 0001 C CNN 1 1350 5500 1 0 0 -1 $EndComp Wire Wire Line 1350 5400 1350 5500 Wire Wire Line 1350 4600 1350 4700 $Comp L power:VCC #PWR? U 1 1 6131161A P 1350 4600 F 0 "#PWR?" H 1350 4450 50 0001 C CNN F 1 "VCC" H 1365 4773 50 0000 C CNN F 2 "" H 1350 4600 50 0001 C CNN F 3 "" H 1350 4600 50 0001 C CNN 1 1350 4600 1 0 0 -1 $EndComp Wire Wire Line 1350 5050 1350 5000 Connection ~ 1350 5050 Wire Wire Line 1350 5050 1850 5050 Wire Wire Line 1350 5100 1350 5050 $Comp L Device:R R? U 1 1 61308B80 P 1350 5250 F 0 "R?" H 1420 5296 50 0000 L CNN F 1 "1k" H 1420 5205 50 0000 L CNN F 2 "" V 1280 5250 50 0001 C CNN F 3 "~" H 1350 5250 50 0001 C CNN 1 1350 5250 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 61307B62 P 1350 4850 F 0 "R?" H 1420 4896 50 0000 L CNN F 1 "1k" H 1420 4805 50 0000 L CNN F 2 "" V 1280 4850 50 0001 C CNN F 3 "~" H 1350 4850 50 0001 C CNN 1 1350 4850 1 0 0 -1 $EndComp $Comp L Device:D_Bridge_+-AA D? U 1 1 612D5611 P 3100 2100 F 0 "D?" V 3300 2200 50 0000 L CNN F 1 "TBD" V 2950 2250 50 0000 L CNN F 2 "" H 3100 2100 50 0001 C CNN F 3 "~" H 3100 2100 50 0001 C CNN 1 3100 2100 0 1 -1 0 $EndComp Wire Wire Line 3950 1350 4400 1350 Connection ~ 3950 1350 Wire Wire Line 3950 1950 3950 1350 $Comp L Device:C C? U 1 1 614360CB P 3950 2100 F 0 "C?" H 4065 2146 50 0000 L CNN F 1 "100n" H 4065 2055 50 0000 L CNN F 2 "" H 3988 1950 50 0001 C CNN F 3 "~" H 3950 2100 50 0001 C CNN 1 3950 2100 1 0 0 -1 $EndComp Connection ~ 3100 1350 Wire Wire Line 3100 1350 3950 1350 Wire Wire Line 1650 1350 3100 1350 $Comp L Device:D_Bridge_+-AA D? U 1 1 61369B64 P 1650 2100 F 0 "D?" V 1800 2250 50 0000 L CNN F 1 "TBD" V 1500 2250 50 0000 L CNN F 2 "" H 1650 2100 50 0001 C CNN F 3 "~" H 1650 2100 50 0001 C CNN 1 1650 2100 0 1 -1 0 $EndComp Wire Wire Line 1650 1800 1650 1350 Wire Wire Line 3100 1350 3100 1800 Wire Notes Line 6550 3000 6550 1250 Wire Notes Line 3750 3000 3750 1250 Wire Notes Line 10400 1100 10400 3000 Connection ~ 9850 2900 Wire Wire Line 10050 2900 9850 2900 Wire Wire Line 6750 2900 7100 2900 Connection ~ 6750 2900 Wire Wire Line 6750 2200 6750 2900 Wire Wire Line 7500 2350 7500 2900 Connection ~ 7100 2900 Wire Wire Line 7100 2200 7100 2900 Wire Wire Line 8650 2450 8650 2900 Wire Wire Line 8650 2900 9600 2900 Wire Wire Line 9850 2900 9850 2550 $Comp L power:GND #PWR? U 1 1 614788C1 P 10050 2900 F 0 "#PWR?" H 10050 2650 50 0001 C CNN F 1 "GND" V 10055 2772 50 0000 R CNN F 2 "" H 10050 2900 50 0001 C CNN F 3 "" H 10050 2900 50 0001 C CNN 1 10050 2900 0 -1 -1 0 $EndComp Wire Wire Line 9600 2150 9600 2900 Connection ~ 9600 2900 Wire Wire Line 9600 2900 9850 2900 Text Label 3950 2900 0 50 ~ 0 POE- Wire Wire Line 3950 2250 3950 2900 Wire Wire Line 3100 2900 3950 2900 Connection ~ 3100 2900 Wire Wire Line 1650 2900 3100 2900 Wire Wire Line 1650 2400 1650 2900 Wire Wire Line 3100 2900 3100 2400 Wire Wire Line 6250 2800 6250 2900 Wire Wire Line 5700 2800 5700 2900 Wire Wire Line 5200 2800 5200 2900 Wire Notes Line 10400 3000 850 3000 $Comp L Device:Q_NPN_BEC Q? U 1 1 618859C4 P 4900 2650 F 0 "Q?" H 4700 2750 50 0000 L CNN F 1 "BC816B" H 4650 2500 50 0000 L CNN F 2 "" H 5100 2750 50 0001 C CNN F 3 "~" H 4900 2650 50 0001 C CNN 1 4900 2650 1 0 0 -1 $EndComp Wire Wire Line 5000 2850 5000 2900 Wire Wire Line 5000 2450 5000 2250 Wire Wire Line 5000 2250 5200 2250 $Comp L Device:R R? U 1 1 6189BE5E P 4400 2050 F 0 "R?" H 4470 2096 50 0000 L CNN F 1 "100k" H 4470 2005 50 0000 L CNN F 2 "" V 4330 2050 50 0001 C CNN F 3 "~" H 4400 2050 50 0001 C CNN 1 4400 2050 1 0 0 -1 $EndComp Wire Wire Line 6250 1650 6000 1650 Connection ~ 5200 1350 Connection ~ 5200 2900 Connection ~ 5700 1350 Connection ~ 5700 2900 Connection ~ 6250 2900 Wire Wire Line 5000 2900 5200 2900 Wire Wire Line 5700 1350 6750 1350 Wire Wire Line 5700 2900 6250 2900 Wire Wire Line 5200 1350 5700 1350 Wire Wire Line 5200 2900 5700 2900 Wire Wire Line 6250 2900 6450 2900 $Comp L Device:Net-Tie_2 NT? U 1 1 61A2AC7B P 6550 2900 F 0 "NT?" H 6650 2850 50 0000 C CNN F 1 "Net-Tie_2" H 6550 2990 50 0001 C CNN F 2 "" H 6550 2900 50 0001 C CNN F 3 "~" H 6550 2900 50 0001 C CNN 1 6550 2900 1 0 0 -1 $EndComp Connection ~ 8650 2900 Connection ~ 7500 2900 Wire Wire Line 7500 2900 8650 2900 Wire Wire Line 6650 2900 6750 2900 Wire Wire Line 7100 2900 7500 2900 $Comp L power:+5V #PWR? U 1 1 61A6AAA5 P 10050 1350 F 0 "#PWR?" H 10050 1200 50 0001 C CNN F 1 "+5V" V 10065 1478 50 0000 L CNN F 2 "" H 10050 1350 50 0001 C CNN F 3 "" H 10050 1350 50 0001 C CNN 1 10050 1350 0 1 1 0 $EndComp Wire Notes Line 4765 2005 4715 2105 Wire Notes Line 4815 2105 4765 2005 Wire Notes Line 4715 2105 4815 2105 Text Notes 4750 2100 0 50 ~ 0 ! 150mW $Comp L Device:Q_NPN_BEC Q? U 1 1 612D816A P 5600 2250 F 0 "Q?" H 5400 2350 50 0000 L CNN F 1 "BC816B" H 5350 2100 50 0000 L CNN F 2 "" H 5800 2350 50 0001 C CNN F 3 "~" H 5600 2250 50 0001 C CNN 1 5600 2250 1 0 0 -1 $EndComp $Comp L Device:D_Zener D? U 1 1 612F1C42 P 4400 1650 F 0 "D?" V 4354 1730 50 0000 L CNN F 1 "22V" V 4445 1730 50 0000 L CNN F 2 "" H 4400 1650 50 0001 C CNN F 3 "~" H 4400 1650 50 0001 C CNN 1 4400 1650 0 1 1 0 $EndComp Connection ~ 5000 2900 Connection ~ 3950 2900 Wire Wire Line 3950 2900 5000 2900 Wire Wire Line 4400 1500 4400 1350 Connection ~ 4400 1350 Wire Wire Line 4400 1350 5200 1350 Wire Wire Line 4400 1800 4400 1900 Wire Wire Line 4400 2200 4400 2650 Wire Wire Line 4400 2650 4700 2650 $EndSCHEMATC