Version 4
SHEET 1 880 680
WIRE -144 112 -320 112
WIRE 128 112 -144 112
WIRE 288 112 128 112
WIRE 400 112 288 112
WIRE 480 112 400 112
WIRE 288 144 288 112
WIRE 400 144 400 112
WIRE -112 160 -128 160
WIRE 128 160 128 112
WIRE 128 160 112 160
WIRE -192 224 -240 224
WIRE -112 224 -192 224
WIRE 208 224 112 224
WIRE -192 256 -192 224
WIRE 288 256 288 224
WIRE -240 288 -240 224
WIRE -224 288 -240 288
WIRE -112 288 -160 288
WIRE 208 288 208 224
WIRE 208 288 112 288
WIRE 544 288 432 288
WIRE 400 304 400 224
WIRE 400 304 352 304
WIRE -320 320 -320 112
WIRE 480 320 480 112
WIRE 432 336 432 288
WIRE 448 336 432 336
WIRE -144 352 -144 112
WIRE -112 352 -144 352
WIRE 128 352 112 352
WIRE 544 352 544 288
WIRE 544 352 512 352
WIRE 560 352 544 352
WIRE 208 368 208 288
WIRE 288 368 288 352
WIRE 288 368 208 368
WIRE 448 368 288 368
WIRE 400 400 400 304
WIRE -240 416 -240 288
WIRE 128 416 128 352
WIRE 208 416 208 368
WIRE -320 432 -320 400
WIRE -288 432 -320 432
WIRE -288 464 -288 432
WIRE -320 496 -320 432
WIRE -240 496 -240 480
WIRE -240 496 -320 496
WIRE -128 496 -128 160
WIRE -128 496 -240 496
WIRE 128 496 128 480
WIRE 128 496 -128 496
WIRE 208 496 208 480
WIRE 208 496 128 496
WIRE 400 496 400 480
WIRE 400 496 208 496
WIRE 480 496 480 384
WIRE 480 496 400 496
FLAG -288 464 0
FLAG 560 352 Out
IOPIN 560 352 Out
SYMBOL Robertugo\\555_ALL 48 272 R0
SYMATTR InstName U1
SYMBOL cap -256 416 R0
SYMATTR InstName Ct
SYMATTR Value 10n
SYMBOL cap 112 416 R0
SYMATTR InstName Cbp
SYMATTR Value 10n
SYMBOL res 272 128 R0
WINDOW 0 -36 40 Left 0
WINDOW 3 -37 69 Left 0
SYMATTR InstName R1
SYMATTR Value 2k7
SYMBOL voltage -320 304 R0
WINDOW 0 7 5 Left 0
WINDOW 3 -15 59 Left 0
SYMATTR InstName V+
SYMATTR Value 12
SYMBOL Robertugo\\pote -256 272 M90
WINDOW 0 105 66 VCenter 0
WINDOW 3 51 67 VCenter 0
WINDOW 123 80 69 VCenter 0
SYMATTR InstName Uoff
SYMATTR Value Rt=10K
SYMBOL cap 192 416 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL pnp2 352 352 R180
WINDOW 0 37 36 Left 0
WINDOW 3 39 62 Left 0
SYMATTR InstName Q1
SYMATTR Value 2N3906
SYMBOL res 384 128 R0
WINDOW 0 -36 40 Left 0
WINDOW 3 -36 66 Left 0
SYMATTR InstName R2
SYMATTR Value 47k
SYMBOL res 384 384 R0
WINDOW 0 -41 41 Left 0
WINDOW 3 -42 63 Left 0
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL Robertugo\\OPAMP5 480 288 R0
WINDOW 0 -26 64 Left 0
WINDOW 38 11 116 Left 0
SYMATTR InstName U2
SYMATTR SpiceModel TL082
TEXT -282 136 Left 0 !.tran 1m