Version 4
SHEET 1 1656 680
WIRE -128 -112 -224 -112
WIRE 496 -112 -128 -112
WIRE 1040 -112 496 -112
WIRE 208 -16 16 -16
WIRE 352 -16 208 -16
WIRE 208 0 208 -16
WIRE 720 32 688 32
WIRE 896 32 800 32
WIRE 1184 32 896 32
WIRE 496 48 496 -112
WIRE 1040 48 1040 -112
WIRE -128 64 -128 -112
WIRE 352 64 352 -16
WIRE 896 64 896 32
WIRE -224 80 -224 -112
WIRE 320 80 288 80
WIRE 864 80 832 80
WIRE 1184 80 1184 32
WIRE 432 96 384 96
WIRE 976 96 928 96
WIRE 208 112 208 80
WIRE 208 112 144 112
WIRE 320 112 208 112
WIRE 688 112 688 32
WIRE 752 112 688 112
WIRE 864 112 752 112
WIRE -128 176 -128 144
WIRE 16 176 16 -16
WIRE 288 176 288 80
WIRE 432 176 288 176
WIRE 496 176 496 144
WIRE 496 176 432 176
WIRE 832 176 832 80
WIRE 976 176 832 176
WIRE 1040 176 1040 144
WIRE 1040 176 976 176
WIRE 1184 176 1184 160
WIRE 1184 176 1040 176
WIRE 208 192 208 112
WIRE 432 192 432 176
WIRE 496 192 496 176
WIRE 752 192 752 112
WIRE 976 192 976 176
WIRE 1040 192 1040 176
WIRE 1184 192 1184 176
WIRE 144 208 144 112
WIRE 688 208 688 112
WIRE 896 288 896 128
WIRE 1184 288 1184 272
WIRE 1184 288 896 288
WIRE -224 304 -224 144
WIRE -128 304 -128 256
WIRE -128 304 -224 304
WIRE 16 304 16 256
WIRE 144 304 144 272
WIRE 144 304 16 304
WIRE 208 304 208 272
WIRE 208 304 144 304
WIRE 352 304 352 128
WIRE 352 304 208 304
WIRE 688 304 688 272
WIRE 752 304 752 272
WIRE 752 304 688 304
WIRE -128 336 -128 304
WIRE 352 336 352 304
WIRE 496 336 496 272
WIRE 752 336 752 304
WIRE 1040 336 1040 272
WIRE 432 368 432 272
WIRE 976 368 976 272
WIRE 976 368 432 368
WIRE 976 384 976 368
WIRE 1184 384 1088 384
WIRE 1184 400 1184 384
WIRE 1088 464 1088 384
WIRE 1088 464 1024 464
WIRE 976 512 976 480
WIRE 1184 512 1184 480
WIRE 1184 512 976 512
WIRE 976 544 976 512
FLAG 352 336 0
FLAG 496 336 0
FLAG -128 336 0
FLAG 752 336 0
FLAG 1040 336 0
FLAG 976 544 0
SYMBOL res 480 176 R0
SYMATTR InstName R1
SYMATTR Value 5
SYMBOL npn 432 48 R0
SYMATTR InstName Q1
SYMATTR Value ZTX1048A
SYMBOL Opamps\\LT1001 352 32 R0
SYMATTR InstName U1
SYMBOL voltage -128 48 R0
WINDOW 3 8 -101 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 24 44 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(-3 +3 0 .1 .1 .1 .4 5)
SYMATTR SpiceLine Rser=.05
SYMBOL res 192 176 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 192 -16 R0
SYMATTR InstName R3
SYMATTR Value 330
SYMBOL zener 160 272 R180
WINDOW 0 24 72 Left 0
WINDOW 3 -42 -56 Left 0
SYMATTR InstName D1
SYMATTR Value BZX84C15L
SYMBOL voltage -128 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V2
SYMATTR Value 25
SYMATTR SpiceLine Rser=.01
SYMBOL res 1024 176 R0
SYMATTR InstName R4
SYMATTR Value 5
SYMBOL npn 976 48 R0
SYMATTR InstName Q2
SYMATTR Value ZTX1048A
SYMBOL Opamps\\LT1001 896 32 R0
SYMATTR InstName U2
SYMBOL res 736 176 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL res 816 16 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 330
SYMBOL zener 704 272 R180
WINDOW 0 24 72 Left 0
WINDOW 3 -24 -49 Left 0
SYMATTR InstName D2
SYMATTR Value BZX84C15L
SYMBOL voltage 1184 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 15
SYMBOL voltage 1184 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value 15
SYMBOL voltage 16 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 30
SYMBOL res 416 176 R0
SYMATTR InstName R7
SYMATTR Value 3
SYMBOL res 960 176 R0
SYMATTR InstName R8
SYMATTR Value 3
SYMBOL voltage 1184 384 R0
WINDOW 3 -103 -35 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value PULSE(0 10 0 25m 25m 10m 70m 10)
SYMBOL nmos 1024 384 M0
SYMATTR InstName M1
SYMATTR Value FDS6699S
SYMBOL cap -240 80 R0
SYMATTR InstName C1
SYMATTR Value 100000µ
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