Version 4
SHEET 1 1044 680
WIRE 112 -240 -192 -240
WIRE 512 -240 336 -240
WIRE 672 -240 512 -240
WIRE 336 -208 336 -240
WIRE 512 -208 512 -240
WIRE -192 -112 -192 -160
WIRE -176 -112 -192 -112
WIRE -16 -112 -96 -112
WIRE 112 -96 112 -240
WIRE 112 -96 -80 -96
WIRE 336 -96 336 -128
WIRE 448 -96 336 -96
WIRE 336 -80 336 -96
WIRE -80 -64 -80 -96
WIRE -368 -48 -448 -48
WIRE -112 -48 -368 -48
WIRE -448 -32 -448 -48
WIRE -368 -32 -368 -48
WIRE -16 -32 -16 -112
WIRE -16 -32 -48 -32
WIRE 160 -32 -16 -32
WIRE 272 -32 240 -32
WIRE -192 -16 -192 -112
WIRE -112 -16 -192 -16
WIRE -192 0 -192 -16
WIRE 272 0 272 -32
WIRE 288 0 272 0
WIRE 512 0 512 -128
WIRE 672 0 672 -240
WIRE 112 48 112 -96
WIRE 448 80 448 -96
WIRE 464 80 448 80
WIRE -368 128 -368 48
WIRE -368 128 -448 128
WIRE -192 128 -192 80
WIRE -192 128 -368 128
WIRE -80 128 -80 0
WIRE -80 128 -192 128
WIRE -32 128 -80 128
WIRE 112 128 -32 128
WIRE 336 128 336 16
WIRE 336 128 112 128
WIRE 512 128 512 96
WIRE 512 128 336 128
WIRE 672 128 672 80
WIRE 672 128 512 128
FLAG -32 128 0
SYMBOL voltage 112 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=50
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL voltage -448 32 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -135 139 Left 2
SYMATTR Value SINE(6 6 10)
SYMATTR InstName V3
SYMBOL res -208 -16 R0
SYMATTR InstName R1
SYMATTR Value 125k
SYMBOL res -208 -256 R0
SYMATTR InstName R2
SYMATTR Value 125k
SYMBOL res -464 -48 R0
SYMATTR InstName R4
SYMATTR Value 365k
SYMBOL res -384 -48 R0
SYMATTR InstName R5
SYMATTR Value 135k
SYMBOL res 320 -224 R0
SYMATTR InstName R6
SYMATTR Value 330k
SYMBOL res 256 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100k
SYMBOL nmos 464 0 R0
SYMATTR InstName M1
SYMATTR Value IRF530
SYMBOL voltage 672 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=50m
SYMATTR InstName V2
SYMATTR Value 12V
SYMBOL res 496 -224 R0
SYMATTR InstName R8
SYMATTR Value 4
SYMBOL Opamps\\LT1077 -80 -96 R0
SYMATTR InstName U2
SYMBOL nmos 288 -80 R0
WINDOW 3 60 76 Left 2
SYMATTR Value IRF530
SYMATTR InstName M2
SYMBOL res -80 -96 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 1000k
TEXT -584 200 Left 2 !.tran 0 300ms 0 10us