Modifying duty cycle

Discussion in 'General Electronics Chat' started by Polgi-Wan, Sep 29, 2005.

  1. Polgi-Wan

    Thread Starter Member

    Sep 26, 2005
    11
    0
    Hi Guys,

    Can you suggest a circuit add-on which can produce a signal with shorter duty cycle (or smaller pulse width)? Pls refer to the attached picture file. Pin X has a square pulse train source while Pin Y needs to tap from Pin X connection. Please note that the high voltage level is at 4V while the low voltage level is at -0.1V.

    Thanks!
     
  2. Gorgon

    Senior Member

    Aug 14, 2005
    113
    0
    Hi,
    Could you give us som more info. What is the frequency range? What pulse range do you want for output? What is the drive requirements for the output? The voltage spec is a bit out of the ordinary, can you expand on this?

    TOK ;)
     
  3. Polgi-Wan

    Thread Starter Member

    Sep 26, 2005
    11
    0

    It should operate at 2.5MHz. Pulse width is 50% of duty cycle for Input X. I would like to have a circuit that would shorten the duty cycle for Input Y. Input Y is series-connected to Input X. Also, they have to be in sync. Can a delay circuit plus op-amp work?

    This would be easy if you have 2 signal generators/sources but let's say you only have 1 signal source?
     
  4. Sebi

    Well-Known Member

    Sep 24, 2005
    59
    0
    As i see, the simple monostable can do this. CD4098 or 4528 can be triggered by rising edge, and with R-C You can adjust the desired pulse width.
     
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