Version 4
SHEET 1 1728 824
WIRE 64 -80 64 -48
WIRE -128 -80 -128 -48
WIRE -64 0 -32 0
WIRE -32 0 -32 80
WIRE -32 0 0 0
WIRE -32 80 -128 80
WIRE -128 80 -128 48
WIRE 64 48 64 80
WIRE 240 80 64 80
WIRE 288 96 288 352
WIRE 64 448 -32 448
WIRE -32 448 -32 480
WIRE -32 448 -128 448
WIRE 64 -160 64 -192
WIRE 64 -192 -128 -192
WIRE -128 -192 -128 -160
WIRE 288 0 288 -192
WIRE 288 -192 480 -192
WIRE 480 -192 480 464
WIRE -32 560 -32 592
WIRE 64 -192 96 -192
WIRE -32 592 96 592
WIRE 592 464 592 432
WIRE 736 464 736 432
WIRE 736 544 736 576
WIRE 736 576 592 576
WIRE 592 544 592 576
WIRE 336 400 288 400
WIRE 288 400 288 464
WIRE 128 352 160 352
WIRE 240 352 288 352
WIRE 288 352 288 400
WIRE -656 512 -656 544
WIRE 64 448 64 400
WIRE -128 448 -128 400
WIRE 64 144 64 80
WIRE 64 240 64 304
WIRE 864 192 864 464
WIRE 864 544 864 576
WIRE 864 576 736 576
WIRE 816 192 864 192
WIRE 736 192 128 192
WIRE 864 576 864 608
WIRE 592 576 480 576
WIRE 288 576 288 544
WIRE -272 352 -224 352
WIRE -352 352 -656 352
WIRE -656 352 -656 432
WIRE -656 64 -544 64
WIRE -384 80 -480 80
WIRE -512 48 -512 16
WIRE -512 16 -480 16
WIRE -512 112 -512 144
WIRE -512 144 -480 144
WIRE -544 -96 -656 -96
WIRE -656 -96 -656 64
WIRE -544 -192 -656 -192
WIRE -656 -192 -656 -96
WIRE -480 -96 -384 -96
WIRE -384 -96 -384 80
WIRE -464 -192 -384 -192
WIRE -656 240 -656 96
WIRE -656 96 -544 96
WIRE -656 320 -656 352
WIRE -384 80 -352 80
WIRE -272 80 -224 80
WIRE -224 80 -224 352
WIRE -224 352 -192 352
WIRE 480 544 480 576
WIRE 480 576 288 576
WIRE -128 80 -128 304
FLAG 96 -192 +15
IOPIN 96 -192 In
FLAG 96 592 -15
IOPIN 96 592 In
FLAG 864 608 0
FLAG 592 432 +15
IOPIN 592 432 Out
FLAG 736 432 -15
IOPIN 736 432 Out
FLAG 336 400 LISNS
IOPIN 336 400 Out
FLAG -656 544 0
FLAG -480 16 +15
IOPIN -480 16 In
FLAG -480 144 -15
IOPIN -480 144 In
FLAG -384 -192 LISNS
IOPIN -384 -192 In
SYMBOL nmos 240 0 R0
WINDOW 0 64 36 Left 0
WINDOW 3 63 59 Left 0
SYMATTR InstName M1
SYMATTR Value FDS6680A
SYMBOL npn 128 304 M0
WINDOW 0 87 35 Left 0
WINDOW 3 36 59 Left 0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL npn -192 304 R0
WINDOW 0 56 35 Left 0
WINDOW 3 56 57 Left 0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL pnp -64 48 R180
WINDOW 0 81 58 Left 0
WINDOW 3 30 37 Left 0
SYMATTR InstName Q3
SYMATTR Value 2N2907
SYMBOL pnp 0 48 M180
WINDOW 0 47 62 Left 0
WINDOW 3 44 40 Left 0
SYMATTR InstName Q4
SYMATTR Value 2N2907
SYMBOL res 48 -176 R0
WINDOW 3 35 65 Left 0
SYMATTR Value 100R
SYMATTR InstName R1
SYMBOL res -144 -176 R0
WINDOW 0 -67 41 Left 0
WINDOW 3 -67 63 Left 0
SYMATTR InstName R2
SYMATTR Value 100R
SYMBOL res 272 448 R0
WINDOW 0 36 48 Left 0
WINDOW 3 36 70 Left 0
SYMATTR InstName R3
SYMATTR Value 50m
SYMBOL res -48 464 R0
WINDOW 0 38 49 Left 0
WINDOW 3 37 72 Left 0
SYMATTR InstName R4
SYMATTR Value 220R
SYMBOL voltage 480 448 R0
WINDOW 0 38 48 Left 0
WINDOW 3 38 76 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 1V
SYMBOL voltage 592 448 R0
WINDOW 0 37 47 Left 0
WINDOW 3 38 70 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value +15V
SYMBOL voltage 736 448 R0
WINDOW 0 36 46 Left 0
WINDOW 3 36 68 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value -15V
SYMBOL res 256 336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 10R
SYMBOL voltage -656 416 R0
WINDOW 0 40 43 Left 0
WINDOW 3 39 64 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value PULSE(5m 500m 0 10n 10n 10u 20u)
SYMBOL npn 128 144 M0
WINDOW 0 2 -35 Left 0
WINDOW 3 -43 -10 Left 0
SYMATTR InstName Q5
SYMATTR Value 2N2222
SYMBOL voltage 864 448 R0
WINDOW 0 36 44 Left 0
WINDOW 3 37 63 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 1V
SYMBOL res 832 176 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 10R
SYMBOL res -256 336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 10R
SYMBOL Opamps\\1pole -512 80 R0
SYMATTR InstName U1
SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=0.5Meg
SYMBOL cap -480 -112 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res -256 64 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL res -448 -208 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 10K
SYMBOL res -640 336 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R11
SYMATTR Value 10K
TEXT -664 592 Left 0 !.tran 0 500u 450u uic
TEXT -664 616 Left 0 ;.ac dec 20 1 10000K