Version 4
SHEET 1 896 680
WIRE -80 48 -80 32
WIRE -32 48 -80 48
WIRE 64 48 48 48
WIRE 336 48 64 48
WIRE -80 80 -80 48
WIRE 144 144 144 128
WIRE -288 160 -288 144
WIRE 336 176 336 48
WIRE -80 192 -80 160
WIRE -32 192 -80 192
WIRE 112 192 48 192
WIRE 272 224 256 224
WIRE -288 256 -288 240
WIRE 64 256 64 48
WIRE 112 256 64 256
WIRE -80 272 -80 192
WIRE 336 288 336 272
WIRE 416 288 336 288
WIRE 336 304 336 288
WIRE 144 320 144 304
WIRE -80 384 -80 352
WIRE 336 400 336 384
FLAG -288 256 0
FLAG 144 128 +V
FLAG -288 144 +V
FLAG 144 320 0
FLAG 336 400 0
FLAG -80 32 +V
FLAG -80 384 0
FLAG 416 288 OUT
SYMBOL voltage -288 144 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL opamps\\LT1637 144 224 R0
SYMATTR InstName U1
SYMBOL npn 272 176 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 320 288 R0
SYMATTR InstName R1
SYMATTR Value 2K
SYMBOL res -96 64 R0
SYMATTR InstName R2
SYMATTR Value .2
SYMBOL res 64 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 200
SYMBOL res 64 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 200
SYMBOL current -80 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value SINE(1 1 1K)
TEXT 424 392 Left 2 !.tran 3m
TEXT 128 -16 Bottom 2 ;Positive Supply Rail Current Sense