Version 4
SHEET 1 1076 916
WIRE -672 -352 -864 -352
WIRE -256 -352 -256 -384
WIRE -256 -352 -672 -352
WIRE -672 -304 -672 -352
WIRE -256 -224 -256 -352
WIRE -672 -176 -672 -224
WIRE -320 -176 -672 -176
WIRE -672 -128 -672 -176
WIRE 656 -128 496 -128
WIRE -256 -80 -256 -128
WIRE -832 -64 -992 -64
WIRE -736 -64 -768 -64
WIRE 496 -48 496 -128
WIRE -864 0 -864 -352
WIRE -1344 16 -1344 -48
WIRE -1216 16 -1344 16
WIRE -992 16 -992 -64
WIRE -992 16 -1136 16
WIRE -896 16 -992 16
WIRE -736 32 -736 -64
WIRE -736 32 -832 32
WIRE -672 32 -672 -64
WIRE -672 32 -736 32
WIRE -256 32 -256 0
WIRE 448 32 -256 32
WIRE -896 48 -928 48
WIRE -256 64 -256 32
WIRE -1344 96 -1344 16
WIRE -672 128 -672 32
WIRE -256 192 -256 144
WIRE -1344 224 -1344 176
WIRE -928 224 -928 48
WIRE -672 240 -672 192
WIRE -320 240 -672 240
WIRE 288 240 288 208
WIRE -672 288 -672 240
WIRE 0 336 0 304
WIRE 112 336 0 336
WIRE 288 336 288 320
WIRE 288 336 192 336
WIRE 656 400 656 -128
WIRE -864 416 -864 64
WIRE -672 416 -672 368
WIRE -672 416 -864 416
WIRE -256 416 -256 288
WIRE -256 416 -672 416
WIRE -256 448 -256 416
WIRE 144 464 144 432
WIRE 496 480 496 48
WIRE 496 480 208 480
WIRE 496 496 496 480
WIRE 384 512 208 512
WIRE -992 528 -992 16
WIRE -816 528 -992 528
WIRE 0 528 0 336
WIRE 0 528 -736 528
WIRE 80 528 0 528
WIRE 256 544 208 544
WIRE 288 576 288 336
WIRE 288 576 208 576
WIRE 384 592 384 512
WIRE 496 592 496 576
WIRE 496 592 384 592
WIRE 144 624 144 592
WIRE 256 656 256 544
WIRE 496 656 496 592
WIRE 656 656 656 480
WIRE -416 784 -416 752
WIRE -240 784 -240 752
WIRE -80 784 -80 752
WIRE 96 784 96 752
WIRE -416 896 -416 864
WIRE -240 896 -240 864
WIRE -80 896 -80 864
WIRE 96 896 96 864
FLAG 496 656 0
FLAG -80 896 0
FLAG 96 896 0
FLAG -80 752 Vdd
FLAG 144 432 Vdd
FLAG 96 752 Vss
FLAG 144 624 Vss
FLAG 656 656 0
FLAG 256 656 0
FLAG 288 208 0
FLAG 0 304 CurrenSense
IOPIN 0 304 Out
FLAG -416 896 0
FLAG -240 896 0
FLAG -416 752 Vcc
FLAG -240 752 Vee
FLAG -256 -384 Vcc
FLAG -256 448 Vee
FLAG -1344 224 0
FLAG -928 224 0
FLAG -1344 -48 Vin
IOPIN -1344 -48 In
SYMBOL Opamps\\LT1193 144 528 M0
WINDOW 0 22 -45 Left 2
SYMATTR InstName U3
SYMBOL res 480 480 R0
SYMATTR InstName Rs
SYMATTR Value 0.001
SYMATTR SpiceLine tol=1
SYMBOL voltage 656 384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vex
SYMATTR Value 10
SYMBOL voltage -80 768 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 96 880 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 V2
SYMATTR Value 5
SYMBOL res 96 352 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 4.5k
SYMATTR SpiceLine tol=1
SYMBOL res 272 336 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 500
SYMBOL npn -320 -224 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL pnp -320 288 M180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res -272 -96 R0
SYMATTR InstName R3
SYMATTR Value 3
SYMBOL res -272 48 R0
SYMATTR InstName R4
SYMATTR Value 3
SYMBOL voltage -416 768 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL voltage -240 880 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 V4
SYMATTR Value 15
SYMBOL diode -688 -128 R0
SYMATTR InstName D1
SYMBOL diode -688 128 R0
SYMATTR InstName D2
SYMBOL res -688 -320 R0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL res -688 272 R0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL Opamps\\LT1220 -864 -32 R0
SYMATTR InstName U1
SYMBOL voltage -1344 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value PULSE(0 -1 5us 1n 1n 5us 10us 2)
SYMBOL res -720 512 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 3.01k
SYMBOL res -1120 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 3.01k
SYMBOL nmos 448 -48 R0
SYMATTR InstName M2
SYMATTR Value IPB015N04L
SYMBOL cap -768 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 50p
TEXT -1000 888 Left 2 !.tran 0 20u 0 1n