Version 4
SHEET 1 880 680
WIRE 288 -288 -352 -288
WIRE 400 -288 288 -288
WIRE 288 -272 288 -288
WIRE 400 -272 400 -288
WIRE -32 -160 -272 -160
WIRE 80 -160 48 -160
WIRE 144 -160 80 -160
WIRE 288 -160 288 -192
WIRE 288 -160 208 -160
WIRE 80 -64 80 -160
WIRE -272 -48 -272 -160
WIRE 400 64 400 -192
WIRE -272 80 -272 32
WIRE 80 80 80 0
WIRE 80 80 -272 80
WIRE -352 112 -352 -288
WIRE 256 112 -352 112
WIRE -272 208 -272 80
WIRE -16 208 -272 208
WIRE 256 208 256 112
WIRE 256 208 208 208
WIRE 400 224 400 128
WIRE -48 272 -224 272
WIRE -16 272 -48 272
WIRE 288 272 288 -160
WIRE 288 272 208 272
WIRE 336 272 288 272
WIRE -352 336 -352 112
WIRE -224 336 -224 272
WIRE -176 336 -224 336
WIRE -64 336 -96 336
WIRE -16 336 -64 336
WIRE 256 336 208 336
WIRE -224 384 -224 336
WIRE -64 400 -64 336
WIRE -48 448 -48 272
WIRE 256 448 256 336
WIRE 256 448 -48 448
WIRE -352 496 -352 416
WIRE -272 496 -272 208
WIRE -272 496 -352 496
WIRE -224 496 -224 448
WIRE -224 496 -272 496
WIRE 400 496 400 320
WIRE 400 496 -224 496
WIRE -352 528 -352 496
FLAG -352 528 0
FLAG -64 400 Vmod
FLAG 288 272 Vdrv
FLAG -272 -160 Vosc
SYMBOL Misc\\NE555 96 304 R0
SYMATTR InstName U1
SYMBOL Misc\\battery -352 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL cap -240 384 R0
SYMATTR InstName C1
SYMATTR Value 0.1u
SYMBOL res -80 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 360k
SYMBOL res 64 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL Misc\\signal -272 -64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(-3.1V 3.1V 0 50n 50n 14.25u 28.6u)
SYMBOL diode 96 0 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 208 -176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res 272 -288 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL npn 336 224 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 384 -288 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL LED 384 64 R0
SYMATTR InstName D3
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
TEXT -330 520 Left 2 !.tran 100m
TEXT 408 152 Left 2 ;IR LED
TEXT 408 -184 Left 2 ;100k\nto 220
TEXT 408 320 Left 2 ;2SC828Q