Version 4
SHEET 1 996 680
WIRE -176 -48 -368 -48
WIRE 288 -48 -176 -48
WIRE -368 0 -368 -48
WIRE 192 32 -256 32
WIRE -176 96 -176 -48
WIRE -256 112 -256 32
WIRE -208 112 -256 112
WIRE 288 112 288 -48
WIRE 16 128 -144 128
WIRE 96 128 16 128
WIRE -368 144 -368 80
WIRE -256 144 -368 144
WIRE -208 144 -256 144
WIRE 16 144 16 128
WIRE 96 144 96 128
WIRE -368 208 -368 144
WIRE 96 240 96 224
WIRE 192 240 192 32
WIRE 192 240 96 240
WIRE -256 256 -256 144
WIRE 16 256 16 224
WIRE 16 256 -256 256
WIRE -368 416 -368 288
WIRE -176 416 -176 160
WIRE -176 416 -368 416
WIRE 96 416 96 304
WIRE 96 416 -176 416
WIRE 288 416 288 192
WIRE 288 416 96 416
FLAG 288 416 0
SYMBOL voltage 288 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL Opamps\\LT1077A -176 64 R0
SYMATTR InstName U2
SYMBOL res -384 -16 R0
SYMATTR InstName R1
SYMATTR Value 80k
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -384 192 R0
SYMATTR InstName R2
SYMATTR Value 67k
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 32 240 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 100k
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL cap 80 240 R0
SYMATTR InstName C1
SYMATTR Value 40µ
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0
SYMBOL res 80 128 R0
SYMATTR InstName R4
SYMATTR Value 50k
SYMATTR SpiceLine tol=1 pwr=0.1
TEXT -320 504 Left 2 !.tran 150000ms