Version 4 SHEET 1 1248 692 WIRE 176 0 80 0 WIRE 432 0 176 0 WIRE 624 0 432 0 WIRE 768 0 624 0 WIRE 976 0 768 0 WIRE 1136 0 976 0 WIRE 80 16 80 0 WIRE 80 16 -16 16 WIRE 976 96 976 0 WIRE 1136 96 1136 0 WIRE 624 176 624 0 WIRE 768 176 768 0 WIRE 560 224 496 224 WIRE 976 224 976 176 WIRE 432 272 432 0 WIRE 656 272 624 272 WIRE 1136 272 1136 176 WIRE 1136 272 1040 272 WIRE 656 304 656 272 WIRE 80 416 80 16 WIRE 176 416 176 0 WIRE 496 416 496 320 WIRE 656 448 656 384 WIRE 768 448 768 256 WIRE 768 448 656 448 WIRE 1136 448 1136 272 WIRE 656 512 656 448 WIRE 80 624 80 480 WIRE 176 624 176 496 WIRE 176 624 80 624 WIRE 496 624 496 496 WIRE 496 624 176 624 WIRE 656 624 656 592 WIRE 656 624 496 624 WIRE 976 624 976 320 WIRE 976 624 656 624 WIRE 1136 624 1136 512 WIRE 1136 624 976 624 WIRE 176 672 176 624 FLAG 176 672 0 FLAG -16 16 inside_cell IOPIN -16 16 Out SYMBOL npn 1040 224 M0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL npn 432 224 R0 SYMATTR InstName Q2 SYMATTR Value 2N3904 SYMBOL pnp2 560 176 R0 SYMATTR InstName Q3 SYMATTR Value 2N3906 SYMBOL cap 1120 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 100k SYMBOL res 480 400 R0 SYMATTR InstName R2 SYMATTR Value 100k SYMBOL res 640 288 R0 SYMATTR InstName R3 SYMATTR Value 1000 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 1120 80 R0 SYMATTR InstName R5 SYMATTR Value 100k SYMBOL res 960 80 R0 SYMATTR InstName R6 SYMATTR Value 300 TEXT 208 656 Left 0 !.tran 0 5 0 .0001 TEXT 384 -32 Left 0 ;Sodium Current: activate and leak TEXT 952 -32 Left 0 ;Potassium Current TEXT 24 -32 Left 0 ;Passive membrane RC