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circuit for pulse generation

Discussion in 'General Electronics Discussion' started by reza, Oct 3, 2013.

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  1. reza

    reza

    7
    0
    Oct 3, 2013
    Hi
    I have pressing need for the following pulse:
    The Square Wave specifications are as follows:
    The pulse consists of: ON(Positive voltage)- OFF- ON(Negative voltage)- OFF .........
    T(ON)= T(OFF)
    X1= 0.25 S – 8 S
    X2= Number of cycles = 2- 4- 6- 8- 10
    X3= output voltage
    In this circuit output voltage and output current should be variable and X1, X2 and start trigger should be obtained with USB port (LABVIEW software) or keyboard or other
    Please help me with schematic; PCB; program; about this circuit;
    Pulse is shown in the following image.
    I wish you all the best
    Thanks;
     

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,412
    2,779
    Jan 21, 2010
    Sure, can we get you a coffee while you wait? Maybe something stronger from our well-equipped bar? I think Fifi is in today, she can give you a delightful massage to make you more relaxed...

    Now you're in the mood, if you want this thread to have a happy ending, just remember that we're here to help you out of the goodness of our hearts. We're NOT here to do your bidding.

    You have an impressive set of requirements, but very few hard specification.

    Firstly, there are multiple ways to produce that output. You could use an H bridge, or the output of an amplifier.

    But what voltages, what range of current limits? what happens at zero volts output (is the output shorted to ground, or open. If the former, does the current limit still apply?

    Is slew rate important?

    What will the USB interface do?

    This would be a large project, and I'd be happy to start with telling you about the options as to how you might go about generating the output waveform.

    So I'm afraid that if you want that happy ending, you're going to have to skip the trip to the bar and help us out.
     
  3. reza

    reza

    7
    0
    Oct 3, 2013
    First,Thank you for your attention
    output voltage can be 0 - 15v and current is 0- 2 A or Any amount that you can design. Output waveform should be Similar to the proposed.
    X1 and X2 and X3 and start trigger can be Regulated with use keyboard or USB interface (by labview software).
    If the project is large, Please send for me the circuit design with generate the square wave with this waveform without attention to other cases,
    Thank you very much
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,412
    2,779
    Jan 21, 2010
    I would suggest you look at an H-Bridge circuit. That can be easily configured to give the waveform you desire.

    The voltage and current limiting would need to be looked at separately.
     
  5. reza

    reza

    7
    0
    Oct 3, 2013
    Thanks
    please, help me in Additional Details about H-Bridge circuits for this waveform and shematic for it.
    can you tell me about voltage and current limiting circuit.
     
  6. reza

    reza

    7
    0
    Oct 3, 2013
    hi
    please help me for voltage and current limiting circuit?
     
  7. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    Reza,

    Who is asking you to do this project that you have, apparently, no skills to perform?

    Bob
     
  8. gorgon

    gorgon

    603
    24
    Jun 6, 2011
    Reza,
    Could this be an Electro-Osmotic pulse generator?
     
  9. reza

    reza

    7
    0
    Oct 3, 2013
    hi gorgon
    I have need to this circuit for a student project.
    If it is possible please help me.
    Thank you so much
     
  10. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    Do you also copy all of your term papers from the internet?

    Bob
     
  11. reza

    reza

    7
    0
    Oct 3, 2013
    I do not understand what you mean
    I just wanted to help me
     
  12. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    No, you want us to do your project for you.

    If what you want is help, how about telling us what you have done so far and what problems you are having with your design.

    Bob
     
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