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  1. #1
    Dark Skywalker
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    , , .

    . - , (Vi) , LM311. , (Vmax), LM311 . LM311, R7 . , , , .

    :


    ( , , )

    (), : Vi Vmax, LM311 Vomin = 0.25V (Output Saturation Voltage ); , Vmax, ( Vomax=Vcc) , Vi Vmin.

    , , :
    Vmin = 2.0 V
    Vmax = 2.5 V
    R3+R4 = 100k
    Vcc = 5.0V
    R7 ( 2k 10 - )

    R3, R4, R5 R6, , R5, R6 R3 LM311, R6<<R3.

    , , R3, R4, R5 R6, . ?
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  2. #2
    Registered User vlado_vrg's Avatar
    Join Date: Sep:2003
    Location: /
    Posts: 417
    LM397
    LM239/339
    LM193/293/393
    pdf .
    AN-74 Aplication Hunts LM139, , .
    MacBook Air 13"

  3. #3
    acdc's Avatar
    Join Date: Jul:2001
    Location:
    Posts: 15,473
    ( ) , . Vi<Vop1=Vmax --> Vo=oH; Vi>Vop1=Vmax --> Vo=oL
    Vi>Vop2=Vmin --> Vo=oL; Vi<Vop2=Vmin --> Vo=oH
    dV=Vop1-Vop2 -> (Vmax-Vmin)

    H - High Level (1)
    oL - Low level (0)

    - , R3 !

    1. dV= [Vcc(R5*R6)]/[(R5*R6)+(R5*R4)+(R6*R4)]
    2. dV/Vop2= [1+(R5/R4)+(R5/R6)]/[1+(R4/R6)+(R4/R5)]
    R5=(n*R4), dV/Vop2=n
    R6
    R6= [R5||R4]/[(Vcc/Vop1) -1]
    LM311 R7 Vcc.
    - Rt R4 .
    , Vlado_vrg, pdf-a, .

  4. #4
    mio's Avatar
    Join Date: Jun:2003
    Location: Sf
    Posts: 1,690
    [bg]Zaradi dylbokata POW systoqnieto na izhoda se preoby]a strymno, mignoweno, [/bg]R4 [bg]"zalepwa" za [/bg]Vcc [bg]ili 0.25. Zatowa ti predlagam da razleda[ dwata slu`aq otdelno samo s rezistorite. Kato sledi[ potencialite na inwertira]iq i neinwertira] whod move[ da izrazi[ momentite na prehod.[/bg]
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