Version 4
SHEET 1 880 680
WIRE -10576 -4192 -10592 -4192
WIRE -10592 -4176 -10592 -4192
WIRE -10240 -4112 -10400 -4112
WIRE -10000 -4112 -10160 -4112
WIRE -10592 -4080 -10592 -4096
WIRE -10544 -4080 -10592 -4080
WIRE -10592 -4064 -10592 -4080
WIRE -10400 -4016 -10400 -4112
WIRE -10368 -4016 -10400 -4016
WIRE -10272 -4016 -10304 -4016
WIRE -10176 -4016 -10208 -4016
WIRE -10080 -4016 -10112 -4016
WIRE -10000 -4016 -10000 -4112
WIRE -10000 -4016 -10016 -4016
WIRE -10592 -3968 -10592 -3984
WIRE -10576 -3968 -10592 -3968
WIRE -10400 -3920 -10400 -4016
WIRE -10336 -3920 -10400 -3920
WIRE -10144 -3920 -10272 -3920
WIRE -10000 -3920 -10000 -4016
WIRE -10000 -3920 -10080 -3920
WIRE -10208 -3840 -10208 -3856
WIRE -10512 -3824 -10640 -3824
WIRE -10400 -3824 -10400 -3920
WIRE -10400 -3824 -10432 -3824
WIRE -10240 -3824 -10400 -3824
WIRE -10000 -3808 -10000 -3920
WIRE -10000 -3808 -10176 -3808
WIRE -9968 -3808 -10000 -3808
WIRE -9872 -3808 -9888 -3808
WIRE -10640 -3792 -10640 -3824
WIRE -10240 -3792 -10336 -3792
WIRE -10336 -3776 -10336 -3792
WIRE -10208 -3760 -10208 -3776
WIRE -10640 -3680 -10640 -3712
WIRE -10336 -3680 -10336 -3696
FLAG -10640 -3680 0
FLAG -10544 -4080 0
FLAG -10576 -4192 15V
FLAG -10576 -3968 -15V
FLAG -10208 -3856 15V
FLAG -10208 -3760 -15V
FLAG -10640 -3824 in
FLAG -9872 -3808 out
FLAG -10336 -3680 0
SYMBOL voltage -10592 -4192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -65 102 Left 2
WINDOW 0 -58 11 Left 2
SYMATTR Value 15V
SYMATTR InstName V1
SYMBOL voltage -10592 -4080 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 -56 26 Left 2
WINDOW 3 -60 94 Left 2
SYMATTR InstName V2
SYMATTR Value 15V
SYMBOL Opamps\\opamp2 -10208 -3872 R0
WINDOW 0 30 37 Left 2
WINDOW 3 19 104 Left 2
SYMATTR InstName U1
SYMATTR Value NE5532
SYMBOL voltage -10640 -3808 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -273 159 Left 2
WINDOW 0 -58 11 Left 2
SYMATTR Value SINE(0 {Uin} 1k 0 0 0)
SYMATTR InstName Vin
SYMBOL Misc\\EuropeanResistor -10352 -3792 R0
WINDOW 0 38 36 Left 2
WINDOW 3 39 71 Left 2
SYMATTR InstName R2
SYMATTR Value 5k
SYMBOL Misc\\EuropeanResistor -9984 -3824 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor -10528 -3808 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL diode -10304 -4032 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value AA112
SYMBOL Misc\\EuropeanResistor -10256 -4128 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 20k
SYMBOL diode -10208 -4032 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value AA112
SYMBOL diode -10112 -4032 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value AA112
SYMBOL diode -10016 -4032 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D4
SYMATTR Value AA112
SYMBOL diode -10336 -3904 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D5
SYMATTR Value AA112
SYMBOL diode -10144 -3904 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D6
SYMATTR Value AA112
TEXT -10640 -3536 Left 2 !.tran 0 1m 0 1µ
TEXT -10640 -3568 Left 2 !.op
TEXT -10640 -3592 Left 2 !.step dec param Uin 0.01 1 10
TEXT -10640 -3504 Left 2 !.lib NE553x.lb
TEXT -10640 -3464 Left 2 !.model AA112 D(Is=1200n Rs=80 N=1.4 Cjo=1.2p tt=18n Eg=0.69)