Version 4 SHEET 1 932 680 WIRE 448 -80 288 -80 WIRE 448 -16 448 -80 WIRE -128 96 -208 96 WIRE 48 96 -128 96 WIRE -208 128 -208 96 WIRE 208 128 160 128 WIRE 400 128 272 128 WIRE 448 128 448 64 WIRE 448 128 400 128 WIRE 576 128 448 128 WIRE 720 128 640 128 WIRE 864 128 720 128 WIRE 928 128 864 128 WIRE 160 144 160 128 WIRE 160 144 112 144 WIRE 48 160 16 160 WIRE 16 192 16 160 WIRE 720 192 720 128 WIRE 720 192 16 192 FLAG -208 208 0 FLAG 288 0 0 FLAG 864 128 output FLAG -128 96 trigger FLAG 400 128 Vrc SYMBOL Digital\\or 80 64 R0 WINDOW 3 -150 -22 Left 2 SYMATTR InstName A1 SYMATTR Value Vhigh=3.3V Vlow=0V SYMBOL cap 272 112 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 470n SYMBOL res 432 -32 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL Digital\\inv 576 64 R0 WINDOW 3 -11 8 Left 2 SYMATTR InstName A2 SYMATTR Value Vhigh=3.3V Vlow=0V SYMBOL voltage -208 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0V 3.3V 1m 10u 10u 100us 10ms 1) SYMBOL voltage 288 -96 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 3.3V TEXT -242 312 Left 2 !.tran 10ms