Delayed Pulse

Discussion in 'General Electronics Chat' started by Hurt_it_Circuit, Jun 2, 2013.

  1. Hurt_it_Circuit

    Thread Starter Member

    Oct 2, 2012
    53
    0
    I want to delay a signal a specified amount and for it to produce a certain pulse width. Pretty much I am given an input pulse of a short duration and I want to delay the pulse a certain amount but maintain a certain range of pulse width. I have created a NOR gate that produces my desired pulse width and it is independent of the input period. But I have no idea how to create the delay. I have tried various 555 timer set ups and none of them have produced my delay. Any ideas or hints would be greatly appreciated.
     
  2. LDC3

    Active Member

    Apr 27, 2013
    920
    160
    You can use this chip. A pulse on either A or B will propagate through the counter for the specified number of times on S0-S3 and then give a pulse on Q. The other required input is a clock signal.
     
  3. Hurt_it_Circuit

    Thread Starter Member

    Oct 2, 2012
    53
    0
    This is too involved. I was thinking to have a transistor that opens up after a capacitor has been charged which will give me a delayed signal depending on my RC values... Or is it even possible to do it this way?
     
  4. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    So how about some details...
    What is the input signal source?
    What is the input pulse width, polarity, and voltage?
    What is the length of the delay period?
    What is the desired output pulse width range and voltage?
    What is the output load?

    An LM556 configured as a dual monostable might work...depending on the answers to the above.

    Ken
     
  5. Hurt_it_Circuit

    Thread Starter Member

    Oct 2, 2012
    53
    0
    input signal is a digital pulse of varied length
    input pulse is from 0-5 volts
    the delay is to be 120-132 microseconds
    pulse width is to be 30-33 microseconds at 5 Volts
     
  6. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    0V>5V>0V input pulse polarity? Delay after the leading or trailing edge of the input pulse?

    Ken
     
  7. Hurt_it_Circuit

    Thread Starter Member

    Oct 2, 2012
    53
    0
    Yes 0V>5V>0V polarity... Delay after the leading edge trigger
     
  8. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
  9. Hurt_it_Circuit

    Thread Starter Member

    Oct 2, 2012
    53
    0
    I figured it out!!!!!!!!!!!!!! thanks for the help everybody that replied
     
    Last edited: Jun 2, 2013
  10. English

    New Member

    Jan 11, 2012
    1
    0
    I have the same need and the dual 555 is not OK
     
  11. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    Elaborate please.

    Ken
     
  12. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,801
    1,105
    How about this, then?
     
Loading...