Version 4
SHEET 1 996 680
WIRE -176 -32 -368 -32
WIRE 288 -32 -176 -32
WIRE -368 16 -368 -32
WIRE 192 32 -256 32
WIRE -176 96 -176 -32
WIRE -256 112 -256 32
WIRE -208 112 -256 112
WIRE 288 112 288 -32
WIRE -32 128 -144 128
WIRE 32 128 -32 128
WIRE 96 128 32 128
WIRE -368 144 -368 96
WIRE -256 144 -368 144
WIRE -208 144 -256 144
WIRE -32 144 -32 128
WIRE 96 144 96 128
WIRE -368 208 -368 144
WIRE -256 256 -256 144
WIRE -32 256 -32 224
WIRE -32 256 -256 256
WIRE 96 256 96 224
WIRE 144 256 96 256
WIRE 192 256 192 32
WIRE 192 256 144 256
WIRE 96 288 96 256
WIRE -368 400 -368 288
WIRE -176 400 -176 160
WIRE -176 400 -368 400
WIRE 96 400 96 352
WIRE 96 400 -176 400
WIRE 288 400 288 192
WIRE 288 400 96 400
WIRE 288 416 288 400
FLAG 288 416 0
FLAG 144 256 c
FLAG 32 128 out
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 0 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 -48 240 M180
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 80 288 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 -368 456 Left 2 !.tran 0 150 0 10m 
TEXT -368 496 Left 2 !.options plotwinsize=0 ; compression off
TEXT -368 544 Left 2 !.ic V(c)=0