Version 4
SHEET 1 1208 680
WIRE 16 32 -176 32
WIRE 96 32 16 32
WIRE 320 32 96 32
WIRE 816 32 560 32
WIRE 1056 32 816 32
WIRE 16 48 16 32
WIRE 816 48 816 32
WIRE 320 64 320 32
WIRE 1056 64 1056 32
WIRE -176 80 -176 32
WIRE 560 80 560 32
WIRE 96 96 96 32
WIRE -32 112 -80 112
WIRE 768 112 656 112
WIRE 16 144 16 128
WIRE -80 160 -80 112
WIRE 656 160 656 112
WIRE 816 208 816 128
WIRE 848 208 816 208
WIRE 960 208 928 208
WIRE 1008 208 960 208
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
FLAG 816 288 0
FLAG 1056 304 0
FLAG 560 160 0
FLAG 656 240 0
FLAG 768 64 0
FLAG 960 272 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 470k
SYMBOL voltage -176 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL sw 16 32 R0
WINDOW 3 -19 39 Left 2
SYMATTR Value REED
SYMATTR InstName S1
SYMBOL voltage -80 144 R0
WINDOW 3 -129 118 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-1 1 0 10n 10n 5 10)
SYMATTR InstName V2
SYMBOL res 0 272 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 0 128 R0
SYMATTR InstName R4
SYMATTR Value 4k7
SYMBOL res 80 80 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL nmos 1008 128 R0
SYMATTR InstName M2
SYMATTR Value IRLML6346
SYMBOL LED 1040 64 R0
SYMATTR InstName D2
SYMATTR Value NSSWS108T
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 1040 208 R0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL cap 976 208 M0
WINDOW 0 -36 42 Left 2
WINDOW 3 -30 62 Left 2
SYMATTR InstName C2
SYMATTR Value 2µ2
SYMBOL res 944 192 R90
WINDOW 0 11 22 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 680k
SYMBOL voltage 560 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL sw 816 32 R0
WINDOW 3 -19 39 Left 2
SYMATTR Value REED
SYMATTR InstName S2
SYMBOL voltage 656 144 R0
WINDOW 3 -74 175 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-1 1 0 10n 10n 5 10)
SYMATTR InstName V4
SYMBOL res 800 192 R0
WINDOW 0 -29 42 Left 2
WINDOW 3 -27 68 Left 2
SYMATTR InstName R8
SYMATTR Value 1k
TEXT 400 376 Left 2 !.model REED sw (Ron=1m Roff=100G)
TEXT -184 320 Left 2 !.tran 20