OR gate circuit- double voltage?

Discussion in 'Homework Help' started by gbox, May 23, 2016.

  1. gbox

    Thread Starter Member

    Dec 29, 2015
    42
    0
    I have got the following circuit:
    צילום מסך 2016‏.05‏.23 ב‏.11.04.18.png

    I understood it is a OR gate, but in the case that V_1=V_2=contestant, V_out is equal to 2v_1=2v_2, unlike the situation when just D1 or D2 where open, is it still a "1" state or it is different because the V_out is bigger?
     
  2. AlbertHall

    Well-Known Member

    Jun 4, 2014
    1,934
    383
    The output voltage cannot be more than the input voltages.

    If V1 = V2 then
    Vout = (V1 - Vdiode) * R/(R +r/2)
     
    gbox likes this.
  3. gbox

    Thread Starter Member

    Dec 29, 2015
    42
    0
    Sorry forgot KVL law for a moment
     
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