Version 4
SHEET 1 2404 1864
WIRE 1024 912 800 912
WIRE 1456 912 1024 912
WIRE 1856 912 1456 912
WIRE 2048 912 1856 912
WIRE 2144 912 2048 912
WIRE 2144 928 2144 912
WIRE 1456 944 1456 912
WIRE 800 960 800 912
WIRE 1120 976 1088 976
WIRE 1232 976 1184 976
WIRE 2144 1024 2144 1008
WIRE 1456 1040 1456 1024
WIRE 800 1088 800 1040
WIRE 1088 1088 1088 976
WIRE 1088 1088 800 1088
WIRE 1120 1088 1088 1088
WIRE 1232 1088 1232 976
WIRE 1232 1088 1200 1088
WIRE 1248 1088 1232 1088
WIRE 1344 1088 1328 1088
WIRE 1392 1088 1344 1088
WIRE 1856 1120 1856 912
WIRE 1344 1168 1344 1088
WIRE 1376 1168 1344 1168
WIRE 1456 1168 1456 1136
WIRE 1456 1168 1440 1168
WIRE 1616 1168 1456 1168
WIRE 1728 1168 1616 1168
WIRE 1792 1168 1728 1168
WIRE 1456 1184 1456 1168
WIRE 2048 1200 2048 912
WIRE 1616 1232 1616 1168
WIRE 1728 1248 1728 1168
WIRE 1856 1248 1856 1216
WIRE 1984 1248 1856 1248
WIRE 1856 1264 1856 1248
WIRE 1456 1280 1456 1264
WIRE 1552 1280 1456 1280
WIRE 800 1312 800 1088
WIRE 1024 1312 1024 912
WIRE 624 1360 560 1360
WIRE 736 1360 704 1360
WIRE 1168 1360 1088 1360
WIRE 1248 1360 1168 1360
WIRE 1856 1360 1856 1344
WIRE 1856 1360 1328 1360
WIRE 2048 1360 2048 1296
WIRE 2048 1360 1856 1360
WIRE 2224 1360 2048 1360
WIRE 560 1376 560 1360
WIRE 1456 1376 1456 1280
WIRE 2224 1376 2224 1360
WIRE 1168 1392 1168 1360
WIRE 1856 1440 1856 1360
WIRE 800 1456 800 1408
WIRE 912 1456 800 1456
WIRE 1024 1456 1024 1408
WIRE 1024 1456 912 1456
WIRE 2224 1472 2224 1456
WIRE 560 1488 560 1456
WIRE 1456 1488 1456 1456
WIRE 1616 1488 1616 1328
WIRE 1616 1488 1456 1488
WIRE 1728 1488 1728 1312
WIRE 1728 1488 1616 1488
WIRE 1792 1488 1728 1488
WIRE 1168 1504 1168 1472
WIRE 2048 1504 2048 1360
WIRE 912 1520 912 1456
WIRE 1456 1536 1456 1488
WIRE 1856 1552 1856 1536
WIRE 1984 1552 1856 1552
WIRE 1856 1584 1856 1552
WIRE 912 1680 912 1600
WIRE 1456 1680 1456 1616
WIRE 1456 1680 912 1680
WIRE 1856 1680 1856 1664
WIRE 1856 1680 1456 1680
WIRE 2048 1680 2048 1600
WIRE 2048 1680 1856 1680
WIRE 2144 1680 2048 1680
WIRE 2144 1696 2144 1680
WIRE 2144 1792 2144 1776
FLAG 2144 1024 0
FLAG 2144 1792 0
FLAG 2224 1472 0
FLAG 1168 1504 0
FLAG 560 1488 0
FLAG 560 1360 IN
FLAG 2224 1360 OUT
SYMBOL NPN 1792 1120 R0
WINDOW 0 60 24 Left 2
WINDOW 3 60 68 Left 2
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL npn 1984 1200 R0
SYMATTR InstName Q7
SYMATTR Value 2N2219A
SYMBOL npn 1984 1504 R0
SYMATTR InstName Q8
SYMATTR Value 2N2219A
SYMBOL PNP 1792 1536 M180
WINDOW 0 64 68 Left 2
WINDOW 3 68 28 Left 2
SYMATTR InstName Q6
SYMATTR Value 2N3906
SYMBOL VOLTAGE 2144 912 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL voltage 2144 1680 R0
SYMATTR InstName V2
SYMATTR Value -10
SYMBOL RES 1440 1520 R0
SYMATTR InstName R11
SYMATTR Value 5K
SYMBOL res 2208 1360 R0
SYMATTR InstName R14
SYMATTR Value 8
SYMBOL res 1440 1168 R0
SYMATTR InstName R9
SYMATTR Value 2K
SYMBOL res 1440 1360 R0
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL npn 1552 1232 R0
SYMATTR InstName Q4
SYMATTR Value 2N3904
SYMBOL npn 736 1312 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 1088 1312 M0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res 784 944 R0
SYMATTR InstName R2
SYMATTR Value 200
SYMBOL res 896 1504 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL pnp 1392 1136 M180
WINDOW 0 72 68 Left 2
WINDOW 3 72 28 Left 2
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res 1152 1376 R0
SYMATTR InstName R6
SYMATTR Value 5K
SYMBOL res 1344 1344 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 50K
SYMBOL voltage 560 1360 R0
SYMATTR InstName V3
SYMATTR Value 0
SYMBOL res 720 1344 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 5K
SYMBOL res 1440 928 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL res 1216 1072 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 9K
SYMBOL cap 1440 1152 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap 1184 960 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL res 1840 1568 R0
SYMATTR InstName R13
SYMATTR Value 1K
SYMBOL res 1840 1248 R0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL cap 1712 1248 R0
SYMATTR InstName C3
SYMATTR Value .001µ
SYMBOL res 1344 1072 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1K
TEXT 920 1704 Left 2 !.op
TEXT 1384 1776 Top 1 ;This example schematic is supplied for informational/educational purposes only.
TEXT 920 1744 Left 2 !.step temp -55 125 5