Version 4
SHEET 1 896 900
WIRE -1024 -112 -1200 -112
WIRE -864 -112 -1024 -112
WIRE -240 -112 -336 -112
WIRE -48 -112 -176 -112
WIRE 96 -112 32 -112
WIRE 384 -112 96 -112
WIRE 432 -112 384 -112
WIRE -240 -80 -288 -80
WIRE -1200 -48 -1200 -112
WIRE -1024 -48 -1024 -112
WIRE -864 -48 -864 -112
WIRE -240 -48 -240 -64
WIRE 384 -48 384 -112
WIRE -288 16 -288 -80
WIRE -144 16 -288 16
WIRE 96 16 96 -112
WIRE 96 16 -64 16
WIRE -1200 48 -1200 32
WIRE 384 80 384 16
WIRE 464 80 384 80
WIRE -1024 112 -1024 32
WIRE -800 112 -1024 112
WIRE -288 112 -288 16
WIRE -288 112 -736 112
WIRE -240 112 -288 112
WIRE -48 112 -176 112
WIRE 96 112 96 16
WIRE 96 112 32 112
WIRE 464 144 464 80
WIRE 96 160 96 112
WIRE 384 176 384 80
WIRE -288 304 -288 112
WIRE -240 304 -288 304
WIRE -48 304 -176 304
WIRE 96 304 96 240
WIRE 96 304 32 304
WIRE 384 304 384 240
WIRE 384 304 96 304
WIRE 448 304 384 304
WIRE -336 336 -336 -112
WIRE -240 336 -336 336
WIRE -864 448 -864 32
WIRE -800 448 -864 448
WIRE -336 448 -336 336
WIRE -336 448 -736 448
WIRE -144 448 -336 448
WIRE 96 448 96 304
WIRE 96 448 -64 448
WIRE -1024 496 -1024 112
WIRE -864 496 -864 448
WIRE -1088 544 -1200 544
WIRE -704 544 -800 544
WIRE -336 544 -336 448
WIRE -224 544 -336 544
WIRE -32 544 -160 544
WIRE 96 544 96 448
WIRE 96 544 48 544
WIRE -704 560 -704 544
WIRE -1200 576 -1200 544
WIRE -944 592 -1024 592
WIRE -864 592 -944 592
WIRE -704 656 -704 640
WIRE -704 656 -1200 656
WIRE -1200 672 -1200 656
WIRE -944 688 -944 592
WIRE -1200 784 -1200 752
WIRE -944 784 -944 768
FLAG 448 304 Vout-
FLAG 464 144 0
FLAG -1200 48 0
FLAG -944 784 0
FLAG -1200 784 0
FLAG -240 -48 0
FLAG -240 352 0
FLAG 432 -112 Vout+
SYMBOL ind 48 288 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L1
SYMATTR Value 22µ
SYMBOL cap 368 176 R0
SYMATTR InstName C1
SYMATTR Value 220n
SYMBOL res -48 432 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 40k
SYMBOL cap -160 528 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 22p
SYMBOL res 80 144 R0
SYMATTR InstName R4
SYMATTR Value 8
SYMBOL voltage -1200 560 R0
WINDOW 123 39 41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -206 -43 Left 0
SYMATTR Value2 AC 1 0
SYMATTR Value SINE(0 100m 1k)
SYMATTR InstName V1
SYMBOL npn -1088 496 R0
WINDOW 3 -58 -6 Left 0
SYMATTR Value BC548B
SYMATTR InstName Q1
SYMBOL npn -800 496 M0
WINDOW 3 -99 15 Left 0
SYMATTR Value BC548B
SYMATTR InstName Q2
SYMBOL res -960 672 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -1040 -64 R0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res -880 -64 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL voltage -1200 -64 R0
WINDOW 123 37 109 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -6 153 Left 0
SYMATTR Value2 AC 1 0
SYMATTR Value 12
SYMATTR InstName V2
SYMBOL voltage -1200 656 R0
WINDOW 123 37 109 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 40 60 Left 0
SYMATTR Value2 AC 1 0
SYMATTR Value 3.6
SYMATTR InstName V3
SYMBOL ind 48 -128 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L2
SYMATTR Value 22µ
SYMBOL res -48 0 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 40k
SYMBOL Digital\\diffschmitt -240 -160 R0
WINDOW 3 -238 -23 Left 0
SYMATTR Value Td=50nS, Trise=5ns, Tfall=5ns, Vh=20m,Vhigh=6,Vlow=-6
SYMATTR InstName A2
SYMBOL Digital\\diffschmitt -240 256 R0
WINDOW 3 -236 -471 Left 0
SYMATTR Value Td=50nS, Trise=5ns, Tfall=5ns, Vh=20m,Vhigh=6,Vlow=-6
SYMATTR InstName A1
SYMBOL cap -176 96 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C4
SYMATTR Value 22p
SYMBOL cap 368 -48 R0
SYMATTR InstName C5
SYMATTR Value 220n
SYMBOL cap -736 96 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C9
SYMATTR Value 1µ0
SYMBOL cap -736 432 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C10
SYMATTR Value 1µ0
SYMBOL voltage -704 544 R0
WINDOW 123 37 109 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 40 60 Left 0
SYMATTR Value2 AC 1 0
SYMATTR Value 15µ
SYMATTR InstName V4
SYMBOL res 48 96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 4k
SYMBOL res 64 528 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 4k
TEXT 224 592 Left 0 !.tran 0 3m 1m 10n
TEXT -880 816 Left 0 ;soft clipper
TEXT -192 808 Left 0 ;UcD Amp