Help WIth Pspice schematics

Discussion in 'General Electronics Chat' started by Saheli, Jul 24, 2013.

  1. Saheli

    Thread Starter New Member

    Jul 9, 2013
    10
    0
    HI,
    I am trying to simulate a 555 timer in monostable mode so that it can stay on after a delay or 1.2us. I have used R=1.09 ohm and C= 1u to get the time using T=1.1*R*C. but the output is simply becoming zero after a brief ns time.:( i have us scale in X axis. Please help..
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,757
    4,800
    You have μs scale in what X axis?

    Where did you find a 1.09Ω resistor (or, I should say, where would you find one when you go to actually build the thing)?

    How much current needs to flow in that resistor?

    Try something more reasonable, like a 1.1kΩ resistor and a 1nF capacitor.

    For any better response, you need to post your circuit.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,023
    3,236
    How can we "Help With Pspice schematics" without the schematic? :confused:
     
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