Version 4
SHEET 1 2020 724
WIRE 416 288 352 288
WIRE 480 272 608 272
WIRE 608 416 224 416
WIRE 608 416 608 448
WIRE 224 304 224 288
WIRE 224 384 224 416
WIRE 224 416 128 416
WIRE 448 240 448 208
WIRE 448 208 480 208
WIRE 448 304 448 336
WIRE 416 336 448 336
WIRE 128 304 128 256
WIRE 0 304 0 256
WIRE 0 384 0 416
WIRE 128 384 128 416
WIRE 128 416 0 416
WIRE 880 128 768 128
WIRE 768 128 768 160
WIRE 768 240 768 272
WIRE 768 384 768 416
WIRE 768 416 880 416
WIRE 944 368 944 336
WIRE 944 336 976 336
WIRE 944 176 944 208
WIRE 944 208 976 208
WIRE 944 16 944 48
WIRE 944 464 944 496
WIRE 944 608 944 640
WIRE 944 640 1120 640
WIRE 1120 640 1120 624
WIRE 944 496 944 528
WIRE 944 48 944 80
WIRE 1120 -96 944 -96
WIRE 944 -96 944 -64
WIRE 1120 96 1120 272
WIRE 768 272 704 272
WIRE 768 272 768 304
WIRE 704 272 704 304
WIRE 1120 272 1168 272
WIRE 1120 272 1120 448
WIRE 1264 304 1264 272
WIRE 944 -96 880 -96
WIRE 944 640 880 640
WIRE 1376 304 1376 272
WIRE 1264 272 1376 272
WIRE 1376 368 1376 400
WIRE 272 288 224 288
WIRE 608 128 656 128
WIRE 608 384 608 416
WIRE 608 304 608 272
WIRE 416 256 368 256
WIRE 368 256 368 128
WIRE 368 128 464 128
WIRE 544 128 608 128
WIRE 608 272 608 128
WIRE 1264 384 1264 400
WIRE 1248 272 1264 272
WIRE 1088 272 1120 272
WIRE 1376 272 1440 272
WIRE 1056 496 944 496
WIRE 1056 48 944 48
WIRE 1120 0 1120 -16
WIRE 944 320 912 320
WIRE 912 240 944 240
WIRE 944 240 944 208
WIRE 944 336 944 320
FLAG 608 448 0
FLAG 656 128 VOP
IOPIN 656 128 In
FLAG 480 208 VCC
IOPIN 480 208 In
FLAG 416 336 VEE
IOPIN 416 336 In
FLAG 0 256 +15
IOPIN 0 256 Out
FLAG 128 256 -15
IOPIN 128 256 Out
FLAG 976 208 VCC
IOPIN 976 208 Out
FLAG 976 336 VEE
IOPIN 976 336 Out
FLAG 704 304 0
FLAG 1440 272 VOUT
IOPIN 1440 272 Out
FLAG 1008 272 VOP
IOPIN 1008 272 Out
FLAG 880 -96 +15
IOPIN 880 -96 In
FLAG 880 640 -15
IOPIN 880 640 In
FLAG 1376 400 0
FLAG 1264 400 0
SYMBOL voltage 0 288 R0
WINDOW 0 -84 45 Left 0
WINDOW 3 -84 66 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15V
SYMBOL voltage 128 288 R0
WINDOW 0 -90 40 Left 0
WINDOW 3 -88 64 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value -15V
SYMBOL Opamps\\1pole 448 272 R0
SYMATTR InstName U1
SYMATTR Value2 Avol=1Meg GBW=75Meg Slew=30Meg
SYMBOL res 368 272 R90
WINDOW 0 -26 68 VBottom 0
WINDOW 3 -30 67 VTop 0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL voltage 224 288 R0
WINDOW 0 36 54 Left 0
WINDOW 3 24 104 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(-1 1 0 2.5u 2.5u 5u 15u)
SYMBOL pnp 880 464 M180
WINDOW 0 77 63 Left 0
WINDOW 3 77 38 Left 0
SYMATTR InstName Q1
SYMATTR Value 2N2907
SYMBOL npn 880 80 R0
WINDOW 0 63 32 Left 0
WINDOW 3 63 58 Left 0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL res 928 -80 R0
WINDOW 0 -43 40 Left 0
WINDOW 3 -40 64 Left 0
SYMATTR InstName R4
SYMATTR Value 470R
SYMBOL res 928 512 R0
WINDOW 0 -43 40 Left 0
WINDOW 3 -43 64 Left 0
SYMATTR InstName R5
SYMATTR Value 470R
SYMBOL voltage 768 144 R0
WINDOW 0 38 39 Left 0
WINDOW 3 42 65 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 2V5
SYMBOL voltage 768 288 R0
WINDOW 0 35 42 Left 0
WINDOW 3 38 67 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 2V5
SYMBOL res 1104 256 R90
WINDOW 0 -22 69 VBottom 0
WINDOW 3 -25 62 VTop 0
SYMATTR InstName R6
SYMATTR Value 470R
SYMBOL cap 1392 368 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL res 592 288 R0
SYMATTR InstName R2
SYMATTR Value 47R
SYMBOL res 560 112 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL res 1248 288 R0
SYMATTR InstName R3
SYMATTR Value 22R
SYMBOL res 1152 288 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R8
SYMATTR Value .001R
SYMBOL npn 1056 448 R0
WINDOW 3 52 56 Left 0
SYMATTR InstName Q3
SYMBOL pnp 1056 96 M180
SYMATTR InstName Q4
SYMBOL res 1104 -112 R0
SYMATTR InstName R9
SYMATTR Value .47R
SYMBOL res 1104 528 R0
SYMATTR InstName R10
SYMATTR Value .47R
SYMBOL res 928 336 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R11
SYMATTR Value 2K2
TEXT -16 456 Left 0 !.tran 0 50u 0