Version 4
SHEET 1 880 680
WIRE -10576 -4192 -10592 -4192
WIRE -10592 -4176 -10592 -4192
WIRE -10592 -4080 -10592 -4096
WIRE -10544 -4080 -10592 -4080
WIRE -10592 -4064 -10592 -4080
WIRE -10304 -4048 -10400 -4048
WIRE -10128 -4048 -10224 -4048
WIRE -10400 -3984 -10400 -4048
WIRE -10336 -3984 -10352 -3984
WIRE -10256 -3984 -10288 -3984
WIRE -10192 -3984 -10208 -3984
WIRE -10128 -3984 -10128 -4048
WIRE -10128 -3984 -10144 -3984
WIRE -10592 -3968 -10592 -3984
WIRE -10576 -3968 -10592 -3968
WIRE -10400 -3904 -10400 -3984
WIRE -10336 -3904 -10400 -3904
WIRE -10256 -3904 -10272 -3904
WIRE -10128 -3904 -10128 -3984
WIRE -10128 -3904 -10192 -3904
WIRE -10240 -3840 -10256 -3840
WIRE -10400 -3824 -10400 -3904
WIRE -10288 -3824 -10400 -3824
WIRE -10128 -3808 -10128 -3904
WIRE -10128 -3808 -10224 -3808
WIRE -10112 -3808 -10128 -3808
WIRE -10000 -3808 -10032 -3808
WIRE -10448 -3792 -10576 -3792
WIRE -10288 -3792 -10448 -3792
WIRE -10576 -3776 -10576 -3792
WIRE -10448 -3776 -10448 -3792
WIRE -10400 -3776 -10400 -3824
WIRE -10240 -3776 -10256 -3776
WIRE -10576 -3680 -10576 -3696
WIRE -10448 -3680 -10448 -3696
WIRE -10400 -3680 -10400 -3696
FLAG -10576 -3680 0
FLAG -10544 -4080 0
FLAG -10576 -4192 15V
FLAG -10576 -3968 -15V
FLAG -10240 -3840 15V
FLAG -10240 -3776 -15V
FLAG -10576 -3792 in
FLAG -10000 -3808 out
FLAG -10400 -3680 0
FLAG -10448 -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 -10256 -3872 R0
WINDOW 0 -43 125 Left 2
WINDOW 3 -8 125 Left 2
SYMATTR InstName U1
SYMATTR Value NE5532
SYMBOL voltage -10576 -3792 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -69 144 Left 2
WINDOW 0 -58 11 Left 2
SYMATTR Value SINE(0 {Uin} 1k 0 0 0)
SYMATTR InstName Vin
SYMBOL diode -10256 -3920 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D6
SYMATTR Value 1N34A
SYMBOL Misc\\EuropeanResistor -10416 -3792 R0
WINDOW 0 38 36 Left 2
WINDOW 3 39 71 Left 2
SYMATTR InstName R2
SYMATTR Value 620
SYMBOL Misc\\EuropeanResistor -10128 -3824 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL diode -10288 -4000 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N34A
SYMBOL Misc\\EuropeanResistor -10464 -3792 R0
WINDOW 0 -21 42 Left 2
WINDOW 3 -34 68 Left 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL diode -10336 -4000 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N34A
SYMBOL diode -10144 -4000 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D4
SYMATTR Value 1N34A
SYMBOL diode -10192 -4000 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N34A
SYMBOL diode -10336 -3920 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D5
SYMATTR Value 1N34A
SYMBOL Misc\\EuropeanResistor -10320 -4064 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 620
TEXT -10648 -3584 Left 2 !.tran 0 5m 0 1µ
TEXT -10296 -3832 Left 2 ;3
TEXT -10296 -3800 Left 2 ;2
TEXT -10224 -3816 Left 2 ;1
TEXT -10648 -3600 Left 2 !.op
TEXT -10648 -3624 Left 2 !.step dec param Uin 0.01 1 10
TEXT -10648 -3560 Left 2 !.lib NE553x.lb