Version 4
SHEET 1 2996 680
WIRE 144 -512 48 -512
WIRE 256 -512 144 -512
WIRE 480 -512 256 -512
WIRE 1456 -512 480 -512
WIRE 1584 -512 1456 -512
WIRE 1776 -512 1584 -512
WIRE 1840 -512 1776 -512
WIRE 2000 -512 1840 -512
WIRE 2112 -512 2000 -512
WIRE 1456 -448 1456 -512
WIRE 1584 -432 1584 -512
WIRE 1456 -336 1456 -368
WIRE 1024 -320 960 -320
WIRE 960 -288 960 -320
WIRE 1008 -272 992 -272
WIRE 1120 -272 1088 -272
WIRE 784 -256 624 -256
WIRE 928 -256 784 -256
WIRE 784 -240 784 -256
WIRE 1312 -240 992 -240
WIRE 1344 -240 1312 -240
WIRE 1456 -240 1456 -272
WIRE 1456 -240 1424 -240
WIRE 1584 -240 1584 -352
WIRE 1584 -240 1456 -240
WIRE 1312 -224 1312 -240
WIRE 1456 -224 1456 -240
WIRE 1840 -224 1840 -512
WIRE 1584 -208 1584 -240
WIRE 2000 -144 2000 -512
WIRE 2112 -144 2112 -512
WIRE 784 -128 784 -176
WIRE 1008 -128 1008 -272
WIRE 1008 -128 784 -128
WIRE 1104 -128 1088 -128
WIRE 1312 -128 1312 -160
WIRE 1376 -128 1312 -128
WIRE 1456 -128 1456 -160
WIRE 1456 -128 1376 -128
WIRE 1776 -128 1776 -512
WIRE 1104 -112 1104 -128
WIRE 1376 -112 1376 -128
WIRE 1584 -96 1584 -128
WIRE 1120 -64 1120 -272
WIRE 1280 -64 1120 -64
WIRE 1840 -64 1840 -144
WIRE 2112 0 2112 -64
WIRE 624 16 624 -256
WIRE 960 16 960 -224
WIRE 1008 16 960 16
WIRE 1280 32 1280 16
WIRE 1024 48 1024 -320
WIRE 1024 48 960 48
WIRE 480 64 480 -512
WIRE 48 80 48 -512
WIRE 144 80 144 -512
WIRE 256 80 256 -512
WIRE 960 80 960 48
WIRE 2192 80 2160 80
WIRE 1072 96 992 96
WIRE 624 112 624 80
WIRE 624 112 544 112
WIRE 688 112 624 112
WIRE 704 112 688 112
WIRE 800 112 768 112
WIRE 848 112 800 112
WIRE 928 112 848 112
WIRE 1280 128 1280 112
WIRE 1280 128 992 128
WIRE 2192 128 2192 80
WIRE 624 144 624 112
WIRE 688 144 688 112
WIRE 1280 176 1280 128
WIRE 480 192 480 160
WIRE 480 192 368 192
WIRE 800 192 800 176
WIRE 848 192 848 176
WIRE 848 192 800 192
WIRE 1072 192 1072 96
WIRE 1072 192 848 192
WIRE 480 208 480 192
WIRE 48 272 48 160
WIRE 144 272 144 144
WIRE 144 272 48 272
WIRE 256 272 256 160
WIRE 256 272 144 272
WIRE 416 272 256 272
WIRE 432 272 416 272
WIRE 544 272 528 272
WIRE 624 272 624 208
WIRE 624 272 544 272
WIRE 1072 272 624 272
WIRE 1152 272 1072 272
WIRE 1280 272 1280 256
WIRE 1280 272 1232 272
WIRE 1312 272 1280 272
WIRE 1584 272 1584 -16
WIRE 1584 272 1312 272
WIRE 1776 272 1776 -64
WIRE 1776 272 1584 272
WIRE 1840 272 1840 0
WIRE 1840 272 1776 272
WIRE 2000 272 2000 -64
WIRE 2000 272 1840 272
WIRE 2112 272 2112 96
WIRE 2112 272 2000 272
WIRE 2192 272 2192 208
WIRE 2192 272 2112 272
WIRE 688 352 688 224
WIRE 960 352 960 144
WIRE 960 352 688 352
WIRE 1008 352 1008 16
WIRE 1008 352 960 352
WIRE 1120 352 1120 -64
WIRE 1120 352 1008 352
WIRE 1312 352 1312 272
WIRE 416 368 416 272
WIRE 448 368 416 368
WIRE 544 368 544 272
WIRE 544 368 512 368
WIRE 960 400 960 352
WIRE 1024 400 1024 48
WIRE 1072 400 1024 400
WIRE 368 480 368 192
WIRE 384 480 368 480
WIRE 688 480 688 352
WIRE 688 480 464 480
WIRE 1008 480 960 480
WIRE 1072 480 1008 480
WIRE 1008 528 1008 480
FLAG 1312 352 0
FLAG 1008 528 0
FLAG 1104 -112 0
FLAG 1376 -112 0
FLAG 1840 -512 OUT+
SYMBOL voltage 48 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 25
SYMBOL cap 128 80 R0
SYMATTR InstName C1
SYMATTR Value 1000µ
SYMBOL res 240 64 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL pnp 432 208 M90
SYMATTR InstName Q1
SYMATTR Value D45H11
SYMBOL npn 544 64 M0
SYMATTR InstName Q2
SYMATTR Value BC817-40
SYMBOL diode 448 352 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMBOL Opamps\\LT1001 960 48 M0
SYMATTR InstName U1
SYMBOL res 1056 176 R0
SYMATTR InstName R3
SYMATTR Value 5.96k
SYMBOL cap 832 112 R0
SYMATTR InstName C2
SYMATTR Value 4.7n
SYMBOL res 1136 256 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1.25
SYMBOL res 1264 160 R0
SYMATTR InstName R5
SYMATTR Value {3k*current+0.1}
SYMBOL res 1264 16 R0
SYMATTR InstName R6
SYMATTR Value {3k*(1-current)+0.1}
SYMBOL res 1264 -80 R0
SYMATTR InstName R7
SYMATTR Value 30k
SYMBOL voltage 960 496 M180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12.4
SYMBOL voltage 1072 384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 7.5
SYMBOL res 672 128 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL Opamps\\LT1001 960 -320 M0
SYMATTR InstName U2
SYMBOL cap 768 -240 R0
SYMATTR InstName C3
SYMATTR Value 2.2n
SYMBOL res 1104 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 139
SYMBOL res 992 -288 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 110k
SYMBOL res 1328 -256 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 1.5k
SYMBOL diode 1296 -224 R0
SYMATTR InstName D6
SYMBOL diode 1472 -160 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D7
SYMBOL cap 1440 -336 R0
SYMATTR InstName C4
SYMATTR Value 6.8µ
SYMBOL res 1440 -464 R0
SYMATTR InstName R12
SYMATTR Value 18
SYMBOL voltage 1584 0 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vref
SYMATTR Value 6.2
SYMBOL res 1568 -224 R0
SYMATTR InstName R13
SYMATTR Value 2.61k
SYMBOL res 1568 -448 R0
SYMATTR InstName R14
SYMATTR Value {10k*voltage+0.1}
SYMBOL diode 1792 -64 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D8
SYMBOL cap 1824 -64 R0
SYMATTR InstName C5
SYMATTR Value 180µ
SYMBOL diode 608 144 R0
SYMATTR InstName D2
SYMBOL res 480 464 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 510
SYMBOL diode 608 16 R0
SYMATTR InstName D3
SYMBOL nmos 2160 0 M0
SYMATTR InstName M1
SYMATTR Value IPB009N03L
SYMBOL voltage 2192 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 10 5ms 0 0 2ms 10ms 1)
SYMBOL res 1824 -240 R0
SYMATTR InstName R15
SYMATTR Value 0.1
SYMBOL res 2096 -160 R0
SYMATTR InstName R16
SYMATTR Value 12
SYMBOL diode 768 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D5
SYMBOL res 1984 -160 R0
SYMATTR InstName R17
SYMATTR Value 100
SYMBOL diode 784 176 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
TEXT 992 -464 Left 2 !.tran 20m
TEXT 664 -464 Left 2 !.param voltage = 0.4\n.param current = 0.8