Version 4 SHEET 1 880 680 WIRE 320 -16 -144 -16 WIRE 448 -16 320 -16 WIRE 576 -16 448 -16 WIRE 704 -16 576 -16 WIRE 320 16 320 -16 WIRE 448 16 448 -16 WIRE 576 16 576 -16 WIRE 704 16 704 -16 WIRE -144 112 -144 -16 WIRE 320 112 320 96 WIRE 448 112 448 96 WIRE 576 112 576 96 WIRE 704 112 704 96 WIRE 320 224 320 192 WIRE 448 224 448 192 WIRE 576 224 576 192 WIRE 704 224 704 192 WIRE -144 320 -144 192 WIRE 64 320 -144 320 WIRE 320 320 320 288 WIRE 320 320 160 320 WIRE 448 320 448 288 WIRE 448 320 320 320 WIRE 576 320 576 288 WIRE 576 320 448 320 WIRE 704 320 704 288 WIRE 704 320 576 320 WIRE -144 368 -144 320 WIRE 80 480 80 368 WIRE 80 592 80 560 FLAG -144 368 0 FLAG 80 592 0 SYMBOL nmos 160 368 M270 WINDOW 0 20 -2 VLeft 2 WINDOW 3 -11 -3 VLeft 2 SYMATTR InstName M1 SYMATTR Value BSC22DN20NS3 SYMBOL voltage -144 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL res 304 0 R0 SYMATTR InstName R1 SYMATTR Value 225 SYMBOL res 432 0 R0 SYMATTR InstName R2 SYMATTR Value 225 SYMBOL res 560 0 R0 SYMATTR InstName R3 SYMATTR Value 225 SYMBOL res 688 0 R0 SYMATTR InstName R4 SYMATTR Value 225 SYMBOL LED 304 224 R0 SYMATTR InstName D1 SYMATTR Value LUW-W5AP SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 432 224 R0 SYMATTR InstName D2 SYMATTR Value LUW-W5AP SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 560 224 R0 SYMATTR InstName D3 SYMATTR Value LUW-W5AP SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 688 224 R0 SYMATTR InstName D4 SYMATTR Value LUW-W5AP SYMATTR Description Diode SYMATTR Type diode SYMBOL current 80 560 R180 WINDOW 0 24 80 Left 2 WINDOW 3 -382 -12 Left 2 WINDOW 123 -382 -40 Left 2 WINDOW 39 -382 -40 Left 2 SYMATTR InstName I1 SYMATTR Value PULSE(0 0.1 0 1n 1n 500m 1) SYMBOL ind 304 96 R0 SYMATTR InstName L1 SYMATTR Value 10µ SYMBOL ind 432 96 R0 SYMATTR InstName L2 SYMATTR Value 10µ SYMBOL ind 560 96 R0 SYMATTR InstName L3 SYMATTR Value 10µ SYMBOL ind 688 96 R0 SYMATTR InstName L4 SYMATTR Value 10µ TEXT 582 368 Left 2 !.tran 0 2s 0s 1us