Version 4
SHEET 1 880 680
WIRE 16 32 -176 32
WIRE 96 32 16 32
WIRE 320 32 96 32
WIRE 16 48 16 32
WIRE 320 64 320 32
WIRE -176 80 -176 32
WIRE 96 96 96 32
WIRE -32 112 -80 112
WIRE 16 144 16 128
WIRE -80 160 -80 112
WIRE 16 240 16 224
WIRE 96 240 96 176
WIRE 96 240 16 240
WIRE 112 240 96 240
WIRE 224 240 192 240
WIRE 320 240 320 208
WIRE 320 240 288 240
WIRE 16 288 16 240
WIRE 224 320 224 240
WIRE 272 320 224 320
WIRE 320 368 320 336
FLAG 16 368 0
FLAG 320 368 0
FLAG -176 160 0
FLAG -80 240 0
FLAG -32 64 0
SYMBOL nmos 272 240 R0
SYMATTR InstName M1
SYMATTR Value IRLML6346
SYMBOL LED 304 64 R0
SYMATTR InstName D1
SYMATTR Value NSSWS108T
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 304 112 R0
SYMATTR InstName R1
SYMATTR Value 220
SYMBOL cap 288 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res 208 224 R90
WINDOW 0 11 22 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 220k
SYMBOL voltage -176 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL sw 16 32 R0
WINDOW 3 -19 39 Left 2
SYMATTR InstName S1
SYMATTR Value REED
SYMBOL voltage -80 144 R0
WINDOW 3 -238 134 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(-1 1 0 10n 10n 10 20)
SYMBOL res 0 272 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 0 128 R0
SYMATTR InstName R4
SYMATTR Value 6k8
SYMBOL res 80 80 R0
SYMATTR InstName R5
SYMATTR Value 10k
TEXT 16 464 Left 2 !.model REED sw (Ron=1m Roff=100G)
TEXT -222 412 Left 2 !.tran 30