Version 4
SHEET 1 2644 1076
WIRE 928 -144 848 -144
WIRE 1040 -144 1008 -144
WIRE 1248 -144 1040 -144
WIRE 1600 -144 1328 -144
WIRE 384 -128 384 -176
WIRE 384 -80 384 -128
WIRE 1104 -48 1104 -64
WIRE 1104 -16 1104 -48
WIRE 1104 -16 1088 -16
WIRE 1040 0 1040 -144
WIRE 1072 0 1040 0
WIRE 1376 16 1136 16
WIRE 1472 16 1376 16
WIRE 1600 16 1600 -144
WIRE 1600 16 1552 16
WIRE 1712 16 1600 16
WIRE 1728 16 1712 16
WIRE 384 32 384 0
WIRE 496 32 384 32
WIRE 848 32 848 -144
WIRE 848 32 752 32
WIRE 1072 32 1040 32
WIRE 1728 48 1728 16
WIRE 384 64 384 32
WIRE 496 64 496 32
WIRE 752 64 752 32
WIRE 1104 80 1104 48
WIRE 1376 112 1376 16
WIRE 1472 112 1376 112
WIRE 1600 112 1600 16
WIRE 1600 112 1552 112
WIRE 752 160 752 144
WIRE 1728 160 1728 128
WIRE 928 192 864 192
WIRE 1040 192 1040 32
WIRE 1040 192 1008 192
WIRE 1248 192 1040 192
WIRE 1376 192 1376 112
WIRE 1376 192 1328 192
WIRE 384 208 384 144
WIRE 384 224 384 208
WIRE 864 288 864 192
FLAG 496 64 0
FLAG 384 -128 +12V
FLAG 384 208 -12V
FLAG 752 160 0
FLAG 1104 -48 -12V
FLAG 1104 80 +12V
FLAG 864 288 0
FLAG 1712 16 Out
FLAG 1728 160 0
SYMBOL voltage 384 -96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value +12
SYMBOL voltage 384 48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value +12
SYMBOL res 1344 -160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 680
SYMBOL res 1024 -160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 82k
SYMBOL res 1344 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 680
SYMBOL res 1568 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 2.2R
SYMBOL res 1024 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 82k
SYMBOL res 1712 32 R0
WINDOW 3 32 66 Left 2
SYMATTR Value 50
SYMATTR InstName R11
SYMBOL res 1568 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 2.2R
SYMBOL voltage 752 48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 10
SYMBOL Opamps\\opamp2 1104 80 M180
SYMATTR InstName U1
SYMATTR Value LM675
SYMATTR SpiceModel LM675.asc
TEXT 376 368 Left 2 !;step param R 1 300k 150
TEXT 1528 264 Left 2 !.op
TEXT 376 320 Left 2 !;tran 0 50m 0 2m
TEXT 1528 224 Left 2 !;step param R 1 81 10
TEXT 1024 312 Left 2 !;.lib OPA551.lib
TEXT 1032 368 Left 2 !.lib LM675.lib