Attie

Discussion in 'The Projects Forum' started by Attie, Mar 31, 2009.

  1. Attie

    Thread Starter New Member

    Mar 31, 2009
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    Howzit guys

    I am working on a project and are in need of help and advice.
    I am a machanical minded guy, but the project my friend and I are working on involves some electronics.
    I need to make a device that puts out DC pulses. The pulses also have to be controled in a way of making it faster or slower as required. If possible i need it as simple as possible.

    I hope someone can help, and will apreciate any help i can get.

    Thanks in advance
     
    Last edited by a moderator: Mar 31, 2009
  2. PRS

    Well-Known Member

    Aug 24, 2008
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    You might try a 555 timer.
     
  3. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    DC pulses huh? What voltage?...millivolts?...volts?...kilovolts? How long a pulse, and how long between pulses?...microcseconds?...minutes...weeks? What does the pulse drive?...an LED?...the national power grid. ;)
    A lot more details would help...like describe your whole project. :)

    Ken
     
  4. Wendy

    Moderator

    Mar 24, 2008
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  5. Attie

    Thread Starter New Member

    Mar 31, 2009
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    Howzit Ken

    thanks for replying
    I want to run 4-8 solenoids (12v) in sequence, almost like an engin. the pulse has to be a microsecond as well as the distance in between. from this speed i need to be able to control the pulses to go faster or back to normal. I cant realy give any more info, hope this helps.

    thanks
     
  6. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    A 1μS (+12v?) pulse, at an adjustable interval, sequentially activates each solenoid for a fixed period of time (how long?). Like engine injectors?

    So the sequence is (# represents each solenoid's ON time and [-] represents time between 1μS input pulses) 1-2-3-4-1-2-3-4-1-2-3-4....

    Ken
     
    Last edited: Apr 2, 2009
  7. SgtWookie

    Expert

    Jul 17, 2007
    22,182
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    1mS (millisecond) = 1/1000 second.
    1uS (microsecond) = 1/1000 mS.
    If you're talking 1uS high and 1uS low, that's a frequency of 1/2uS = 500kHz.

    I don't know of any solenoids that could possibly respond that quickly.