Version 4
SHEET 1 1936 680
WIRE 192 -96 32 -96
WIRE 400 -96 192 -96
WIRE 32 -64 32 -96
WIRE 1040 -64 624 -64
WIRE 1376 -16 1280 -16
WIRE -192 32 -352 32
WIRE 192 48 192 -96
WIRE 400 96 400 -96
WIRE 1280 112 1280 -16
WIRE 704 128 608 128
WIRE 816 128 784 128
WIRE 912 128 880 128
WIRE 1040 128 912 128
WIRE 1248 128 1040 128
WIRE -192 144 -192 112
WIRE 64 144 64 128
WIRE 64 144 -192 144
WIRE 192 144 192 128
WIRE 192 144 64 144
WIRE 336 144 192 144
WIRE 1488 144 1312 144
WIRE -192 160 -192 144
WIRE 1248 160 1152 160
WIRE 1488 160 1488 144
WIRE -352 176 -352 32
WIRE 912 176 912 128
WIRE 1040 176 1040 128
WIRE 400 208 400 192
WIRE 528 208 528 32
WIRE 528 208 400 208
WIRE 608 208 608 128
WIRE 608 208 528 208
WIRE 400 224 400 208
WIRE 1376 272 1376 64
WIRE 912 320 912 256
WIRE 976 320 912 320
WIRE 1040 320 1040 240
WIRE 1040 320 976 320
WIRE 1152 320 1152 160
WIRE 1152 320 1040 320
WIRE -192 336 -192 240
WIRE 400 336 400 304
WIRE -352 352 -352 256
WIRE 1280 368 1280 176
WIRE 1376 368 1376 352
WIRE 1376 368 1280 368
WIRE 976 432 976 400
FLAG -352 352 0
FLAG 976 432 0
FLAG 1488 240 0
FLAG -192 336 0
FLAG 400 336 0
FLAG 32 16 0
FLAG 528 32 provodok
FLAG 1040 16 0
FLAG 64 128 base
SYMBOL voltage -352 160 R0
WINDOW 3 -416 -21 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 -417 24 Left 2
SYMATTR Value PULSE(0 3.3 0 1e-8 1e-8 1e-4 2e-4)
SYMATTR SpiceLine Rser=160
SYMATTR InstName V1
SYMBOL cap 880 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL res 800 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3.3k
SYMBOL res 896 272 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 220k
SYMBOL res 960 416 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 430
SYMBOL cap 1024 176 R0
SYMATTR InstName C3
SYMATTR Value 2.2n
SYMBOL voltage 1376 -32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL voltage 1376 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL res 1472 144 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -208 16 R0
SYMATTR InstName Rvar
SYMATTR Value 100
SYMBOL res -208 144 R0
SYMATTR InstName Rfix
SYMATTR Value 1.2k
SYMBOL npn 336 96 R0
SYMATTR InstName Q1
SYMATTR Value BC817-40
SYMBOL res 384 208 R0
SYMATTR InstName R7
SYMATTR Value 470
SYMBOL voltage 32 -80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 3.3
SYMBOL res 176 32 R0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL voltage 1040 -80 R0
WINDOW 3 -416 -21 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 -417 24 Left 2
SYMATTR Value PULSE(0 1.6 0 1e-8 1e-8 12e-5 25e-5)
SYMATTR SpiceLine Rser=10
SYMATTR InstName V5
SYMBOL Opamps\\OP27 1280 80 R0
SYMATTR InstName U2
TEXT 512 480 Left 2 !.tran 2e-3