Version 4
SHEET 1 896 680
WIRE -32 32 -32 16
WIRE 0 32 -32 32
WIRE 128 32 80 32
WIRE 400 32 128 32
WIRE -32 64 -32 32
WIRE -192 112 -192 96
WIRE 192 112 192 96
WIRE 400 144 400 32
WIRE -32 160 -32 144
WIRE 16 160 -32 160
WIRE 160 160 96 160
WIRE 336 192 304 192
WIRE -192 208 -192 192
WIRE -32 208 -32 160
WIRE 128 224 128 32
WIRE 160 224 128 224
WIRE 400 256 400 240
WIRE 448 256 400 256
WIRE 400 272 400 256
WIRE 192 288 192 272
WIRE -32 304 -32 288
WIRE 400 368 400 352
FLAG -192 208 0
FLAG 192 96 +V
FLAG -192 96 +V
FLAG 192 288 0
FLAG 400 368 0
FLAG -32 304 0
FLAG -32 16 +V
FLAG 448 256 OUT
SYMBOL voltage -192 96 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL npn 336 144 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res -48 48 R0
SYMATTR InstName R1
SYMATTR Value .2
SYMBOL res 96 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 200
SYMBOL res 112 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 200
SYMBOL res 384 256 R0
SYMATTR InstName R4
SYMATTR Value 2K
SYMBOL current -32 208 R0
SYMATTR InstName I1
SYMATTR Value SINE(1 1 1K)
SYMBOL opamps\\LT1783 192 192 R0
SYMATTR InstName U1
TEXT 488 320 Left 2 !.tran 3m
TEXT 184 -24 Bottom 2 ;Positive Supply Rail Current Sense