Version 4 SHEET 1 2184 692 WIRE 176 16 80 16 WIRE 400 16 176 16 WIRE 624 16 400 16 WIRE 768 16 624 16 WIRE 1008 16 768 16 WIRE 1168 16 1008 16 WIRE 1552 16 1168 16 WIRE 80 32 80 16 WIRE 80 32 64 32 WIRE 80 96 80 32 WIRE 80 96 -112 96 WIRE -112 128 -112 96 WIRE 1552 144 1552 16 WIRE 624 176 624 16 WIRE 768 176 768 16 WIRE 1008 192 1008 16 WIRE 1168 192 1168 16 WIRE 1488 192 1440 192 WIRE 1504 192 1488 192 WIRE 560 224 464 224 WIRE 1376 240 1328 240 WIRE -112 272 -112 208 WIRE 400 272 400 16 WIRE 656 272 624 272 WIRE -112 288 -112 272 WIRE 656 304 656 272 WIRE 1008 320 1008 272 WIRE 1168 368 1168 272 WIRE 1168 368 1072 368 WIRE 1328 400 1328 240 WIRE 1440 400 1440 288 WIRE 80 416 80 96 WIRE 176 416 176 16 WIRE 464 416 464 320 WIRE 1168 448 1168 368 WIRE 656 464 656 384 WIRE 768 464 768 256 WIRE 768 464 656 464 WIRE 1552 464 1552 240 WIRE 656 512 656 464 WIRE 1328 512 1328 480 WIRE 1408 512 1328 512 WIRE 1440 512 1440 480 WIRE 1440 512 1408 512 WIRE 1488 512 1440 512 WIRE 1408 528 1408 512 WIRE -112 624 -112 352 WIRE 80 624 80 480 WIRE 80 624 -112 624 WIRE 176 624 176 496 WIRE 176 624 80 624 WIRE 464 624 464 496 WIRE 464 624 176 624 WIRE 656 624 656 592 WIRE 656 624 464 624 WIRE 1008 624 1008 416 WIRE 1008 624 656 624 WIRE 1168 624 1168 512 WIRE 1168 624 1008 624 WIRE 1408 624 1408 592 WIRE 1408 624 1168 624 WIRE 1552 624 1552 560 WIRE 1552 624 1408 624 WIRE 176 672 176 624 FLAG 176 672 0 FLAG 64 32 inside_cell IOPIN 64 32 Out SYMBOL npn 1072 320 M0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL npn 400 224 R0 SYMATTR InstName Q2 SYMATTR Value 2N3904 SYMBOL pnp2 560 176 R0 SYMATTR InstName Q3 SYMATTR Value 2N3906 SYMBOL cap 1152 448 R0 SYMATTR InstName C1 SYMATTR Value 20µf SYMATTR SpiceLine V=10 Irms=0 Rser=0.009 Lser=0 SYMBOL polcap 64 416 R0 WINDOW 3 24 64 Left 0 SYMATTR Value 10µf SYMATTR InstName C2 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=50 Irms=22m Rser=3.9 Lser=0 SYMBOL res 160 400 R0 SYMATTR InstName R1 SYMATTR Value 1e6 SYMBOL res 448 400 R0 SYMATTR InstName R2 SYMATTR Value 100k SYMBOL res 640 288 R0 SYMATTR InstName R3 SYMATTR Value 5k SYMBOL voltage 656 496 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL res 752 160 R0 SYMATTR InstName R4 SYMATTR Value 500k SYMBOL res 1152 176 R0 SYMATTR InstName R5 SYMATTR Value 100k SYMBOL res 992 176 R0 SYMATTR InstName R6 SYMATTR Value 300 SYMBOL npn 1488 464 R0 SYMATTR InstName Q6 SYMATTR Value 2N3904 SYMBOL cap 1392 528 R0 SYMATTR InstName C4 SYMATTR Value 10µf SYMBOL res 1312 384 R0 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL res 1424 384 R0 SYMATTR InstName R9 SYMATTR Value 1k SYMBOL pnp 1376 288 M180 WINDOW 0 -25 29 Left 0 WINDOW 3 -47 105 Left 0 SYMATTR InstName Q4 SYMATTR Value 2N3906 SYMBOL pnp 1488 240 M180 SYMATTR InstName Q5 SYMATTR Value 2N3906 SYMBOL voltage -112 256 R0 WINDOW 3 -214 137 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value PULSE(0 5 4 .0001 .0001 .1 0.75) SYMATTR InstName V2 SYMBOL res -128 112 R0 SYMATTR InstName R7 SYMATTR Value 200k TEXT 728 656 Left 0 !.tran 0 7 0 .0001 TEXT 384 -16 Left 0 ;Fast inward (Sodium) Current TEXT 824 -8 Left 0 ;Slow outward ( Potassium) Current TEXT 24 -16 Left 0 ;Passive membrane RC TEXT 1272 -8 Left 0 ;Plateau (Ca and K) current TEXT 976 272 VLeft 0 ;K current TEXT 616 424 VLeft 0 ;Na current TEXT 1584 432 VLeft 0 ;mixed current TEXT 800 472 VLeft 0 ;Na leak current TEXT -160 656 Left 0 ;Pacemaker RECTANGLE Normal 0 688 -208 64 1