Version 4 SHEET 1 884 744 WIRE -160 144 -320 144 WIRE 0 144 -160 144 WIRE 288 144 256 144 WIRE 592 144 288 144 WIRE 288 176 288 144 WIRE -160 192 -160 144 WIRE -320 224 -320 144 WIRE 592 256 592 144 WIRE 128 304 128 240 WIRE 128 304 0 304 WIRE 288 304 288 256 WIRE 288 304 128 304 WIRE -320 336 -320 304 WIRE -160 336 -160 256 WIRE 592 352 592 336 WIRE -464 544 -480 544 WIRE 0 544 0 384 WIRE 0 544 -80 544 WIRE 128 544 128 480 WIRE 128 544 0 544 WIRE 288 544 288 480 WIRE 288 544 128 544 WIRE 416 544 288 544 WIRE 416 608 416 544 WIRE 64 640 64 432 WIRE 224 640 224 432 WIRE -464 672 -480 672 FLAG -320 336 0 FLAG -160 336 0 FLAG 592 352 0 FLAG 416 608 0 FLAG 64 640 D1 IOPIN 64 640 In FLAG 224 640 D2 IOPIN 224 640 In FLAG -480 544 0 FLAG -384 544 D1 IOPIN -384 544 Out FLAG -480 672 0 FLAG -384 672 D2 IOPIN -384 672 Out SYMBOL PowerProducts\\LT1117 128 144 R0 SYMATTR InstName U1 SYMBOL voltage -320 208 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL cap -176 192 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL res 576 240 R0 SYMATTR InstName R2 SYMATTR Value 3k SYMBOL res -16 288 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res 112 288 R0 SYMATTR InstName R4 SYMATTR Value 720 SYMBOL npn 64 384 R0 SYMATTR InstName Q1 SYMBOL res 272 288 R0 SYMATTR InstName R5 SYMATTR Value 5k SYMBOL npn 224 384 R0 SYMATTR InstName Q2 SYMBOL voltage -368 544 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0 5 5m 1u 1u 5m) SYMBOL voltage -368 672 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value PULSE(0 5 0 1u 1u 5m 10m) SYMBOL res 272 160 R0 SYMATTR InstName R6 SYMATTR Value 1k TEXT 528 56 Left 2 ;LOAD TEXT -272 408 Left 2 !.tran 20m startup TEXT -80 -56 Left 2 ;https://www.mikrocontroller.net/topic/474388#5845205 TEXT 80 -152 Left 4 ;Test RECTANGLE Normal 768 400 512 32 2