Version 4
SHEET 1 880 680
WIRE -10160 -4000 -10176 -4000
WIRE -9888 -4000 -9936 -4000
WIRE -9792 -4000 -9888 -4000
WIRE -9888 -3984 -9888 -4000
WIRE -10176 -3968 -10176 -4000
WIRE -9792 -3936 -9792 -4000
WIRE -9888 -3888 -9888 -3904
WIRE -9888 -3888 -9920 -3888
WIRE -9856 -3888 -9888 -3888
WIRE -9248 -3872 -9504 -3872
WIRE -10176 -3856 -10176 -3888
WIRE -10176 -3856 -10208 -3856
WIRE -9984 -3840 -10000 -3840
WIRE -10176 -3824 -10176 -3856
WIRE -9792 -3808 -9792 -3840
WIRE -9712 -3808 -9792 -3808
WIRE -9792 -3792 -9792 -3808
WIRE -9712 -3792 -9712 -3808
WIRE -9440 -3792 -9440 -3808
WIRE -9504 -3776 -9504 -3872
WIRE -9472 -3776 -9504 -3776
WIRE -9344 -3760 -9408 -3760
WIRE -9248 -3760 -9248 -3872
WIRE -9248 -3760 -9280 -3760
WIRE -9152 -3760 -9248 -3760
WIRE -9920 -3744 -9920 -3792
WIRE -9472 -3744 -9536 -3744
WIRE -9248 -3728 -9248 -3760
WIRE -9152 -3728 -9152 -3760
WIRE -10176 -3712 -10176 -3744
WIRE -10160 -3712 -10176 -3712
WIRE -9440 -3712 -9440 -3728
WIRE -9792 -3696 -9792 -3728
WIRE -9712 -3696 -9712 -3712
WIRE -9712 -3696 -9792 -3696
WIRE -10144 -3648 -10176 -3648
WIRE -10000 -3648 -10000 -3840
WIRE -10000 -3648 -10144 -3648
WIRE -9792 -3648 -9792 -3696
WIRE -9792 -3648 -9824 -3648
WIRE -9248 -3632 -9248 -3648
WIRE -9152 -3632 -9152 -3664
WIRE -10176 -3616 -10176 -3648
WIRE -9792 -3600 -9792 -3648
WIRE -9712 -3600 -9792 -3600
WIRE -9712 -3584 -9712 -3600
WIRE -9792 -3568 -9792 -3600
WIRE -9248 -3568 -9504 -3568
WIRE -10176 -3520 -10176 -3536
WIRE -9920 -3504 -9920 -3536
WIRE -9792 -3488 -9792 -3504
WIRE -9712 -3488 -9712 -3504
WIRE -9712 -3488 -9792 -3488
WIRE -9440 -3488 -9440 -3504
WIRE -9504 -3472 -9504 -3568
WIRE -9472 -3472 -9504 -3472
WIRE -10000 -3456 -10000 -3648
WIRE -9984 -3456 -10000 -3456
WIRE -9792 -3456 -9792 -3488
WIRE -9344 -3456 -9408 -3456
WIRE -9248 -3456 -9248 -3568
WIRE -9248 -3456 -9280 -3456
WIRE -9152 -3456 -9248 -3456
WIRE -9472 -3440 -9536 -3440
WIRE -9248 -3424 -9248 -3456
WIRE -9152 -3424 -9152 -3456
WIRE -9888 -3408 -9920 -3408
WIRE -9856 -3408 -9888 -3408
WIRE -9440 -3408 -9440 -3424
WIRE -9888 -3392 -9888 -3408
WIRE -9248 -3328 -9248 -3344
WIRE -9152 -3328 -9152 -3360
WIRE -9888 -3296 -9888 -3312
WIRE -9888 -3296 -9936 -3296
WIRE -9792 -3296 -9792 -3360
WIRE -9792 -3296 -9888 -3296
FLAG -10176 -3520 0
FLAG -10208 -3856 0
FLAG -9936 -3296 -15V
FLAG -10160 -4000 15V
FLAG -10160 -3712 -15V
FLAG -9936 -4000 15V
FLAG -10144 -3648 in
FLAG -9824 -3648 0
FLAG -9920 -3744 -15V
FLAG -9920 -3536 15V
FLAG -9712 -3808 c3
FLAG -9712 -3488 c4
FLAG -9440 -3808 15V
FLAG -9440 -3712 -15V
FLAG -9536 -3744 in
FLAG -9152 -3632 0
FLAG -9248 -3632 0
FLAG -9440 -3504 15V
FLAG -9440 -3408 -15V
FLAG -9536 -3440 in
FLAG -9152 -3328 0
FLAG -9248 -3328 0
FLAG -9152 -3760 c3a
FLAG -9152 -3456 c4a
SYMBOL voltage -10176 -3984 M0
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 -10176 -3840 M0
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 voltage -10176 -3632 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -127 152 Left 2
WINDOW 0 -58 11 Left 2
SYMATTR Value SINE(0 80m 1k 10m 0 0 50)
SYMATTR InstName Vin
SYMBOL cap -9808 -3568 R0
SYMATTR InstName C4
SYMATTR Value 1µ
SYMBOL cap -9808 -3792 R0
WINDOW 0 34 14 Left 2
WINDOW 3 34 49 Left 2
SYMATTR InstName C3
SYMATTR Value 1µ
SYMBOL pnp -9984 -3792 M180
WINDOW 0 53 61 Left 2
WINDOW 3 51 38 Left 2
SYMATTR InstName Q4
SYMATTR Value BC557C
SYMBOL npn -9856 -3936 R0
WINDOW 3 56 54 Left 2
SYMATTR Value BC547C
SYMATTR InstName Q3
SYMBOL Misc\\EuropeanResistor -9872 -3888 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R12
SYMATTR Value 47k
SYMBOL npn -9984 -3504 R0
WINDOW 3 51 59 Left 2
WINDOW 0 48 38 Left 2
SYMATTR Value BC547C
SYMATTR InstName Q5
SYMBOL Misc\\EuropeanResistor -9872 -3296 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R10
SYMATTR Value 47k
SYMBOL pnp -9856 -3360 M180
WINDOW 0 53 61 Left 2
WINDOW 3 51 38 Left 2
SYMATTR InstName Q6
SYMATTR Value BC557C
SYMBOL Misc\\EuropeanResistor -9728 -3696 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL Misc\\EuropeanResistor -9728 -3488 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL Opamps\\UniversalOpamp2 -9440 -3760 R0
SYMATTR InstName U1
SYMBOL diode -9344 -3744 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL cap -9168 -3728 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res -9264 -3744 R0
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL Opamps\\UniversalOpamp2 -9440 -3456 R0
SYMATTR InstName U2
SYMBOL diode -9280 -3472 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL cap -9168 -3424 R0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL res -9264 -3440 R0
SYMATTR InstName R4
SYMATTR Value 100k
TEXT -10352 -3352 Left 2 !.tran 0 100m 0 10u
TEXT -10352 -3312 Left 2 !.options plotwinsize=0
TEXT -9416 -3960 Left 5 ;10kHz?