Version 4 SHEET 1 880 680 WIRE 176 -272 144 -272 WIRE 304 -272 256 -272 WIRE 304 -224 304 -272 WIRE 144 -208 144 -272 WIRE 144 -96 144 -128 WIRE 304 -96 304 -144 WIRE 128 -16 0 -16 WIRE 320 -16 128 -16 WIRE 480 -16 320 -16 WIRE 0 16 0 -16 WIRE 128 16 128 -16 WIRE 320 16 320 -16 WIRE 480 16 480 -16 WIRE 0 128 0 96 WIRE 0 128 -96 128 WIRE 480 128 480 96 WIRE 576 128 480 128 WIRE 0 144 0 128 WIRE 128 144 128 96 WIRE 320 144 320 96 WIRE 480 144 480 128 WIRE 0 240 0 224 WIRE 0 240 -96 240 WIRE 480 240 480 224 WIRE 576 240 480 240 WIRE 0 272 0 240 WIRE 128 272 128 224 WIRE 320 272 320 224 WIRE 480 272 480 240 WIRE 0 384 0 352 WIRE 128 384 128 352 WIRE 128 384 0 384 WIRE 224 384 128 384 WIRE 320 384 320 352 WIRE 320 384 224 384 WIRE 480 384 480 352 WIRE 480 384 320 384 WIRE 224 416 224 384 FLAG 224 416 0 FLAG 304 -96 0 FLAG 144 -96 0 FLAG 576 128 d IOPIN 576 128 BiDir FLAG 576 240 c IOPIN 576 240 BiDir FLAG -96 128 a IOPIN -96 128 BiDir FLAG -96 240 b IOPIN -96 240 BiDir SYMBOL ind2 112 0 R0 SYMATTR InstName L1 SYMATTR Value 1µ SYMATTR Type ind SYMBOL ind2 112 256 R0 SYMATTR InstName L2 SYMATTR Value 1µ SYMATTR Type ind SYMBOL ind2 336 112 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L3 SYMATTR Value 1µ SYMATTR Type ind SYMBOL ind2 336 368 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L4 SYMATTR Value 1µ SYMATTR Type ind SYMBOL res 112 128 R0 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL res 336 240 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL ind2 288 -240 R0 SYMATTR InstName L5 SYMATTR Value 1µ SYMATTR Type ind SYMBOL voltage 144 -224 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -283 53 Left 2 SYMATTR InstName V1 SYMATTR Value EXP(0 1 0 1n 2n 100n) SYMBOL res 272 -288 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL ind2 496 112 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L6 SYMATTR Value 1µ SYMATTR Type ind SYMBOL ind2 496 368 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L7 SYMATTR Value 1µ SYMATTR Type ind SYMBOL res 464 128 R0 SYMATTR InstName R4 SYMATTR Value 1Meg SYMBOL ind2 -16 256 R0 SYMATTR InstName L8 SYMATTR Value 1µ SYMATTR Type ind SYMBOL ind2 -16 0 R0 SYMATTR InstName L9 SYMATTR Value 1µ SYMATTR Type ind SYMBOL res 16 240 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R5 SYMATTR Value 1Meg TEXT -288 424 Left 2 !.tran 100n startup TEXT 104 472 Left 2 !K1 L5 L1 L2 L3 L4 L6 L7 L8 L9 .1