Random signal generator

Discussion in 'General Electronics Chat' started by Ivica, Jan 6, 2009.

  1. Ivica

    Thread Starter New Member

    Jan 6, 2009
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    I need to create random signal generator in Electronic Workbench, so can you help me?

    It needs to have at least three period and every half period needs to be different from one before and after by V and t



    Thanks!
     
    Last edited: Jan 6, 2009
  2. thingmaker3

    Retired Moderator

    May 16, 2005
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    The image you tried to post is on your C drive. We won't be able to see it until you get it online. You can upload the file here as an attachment - use the paper clip icon when posting.
     
  3. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
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    Do you mean a random signal generator or an ARBITRARY signal generator. These are actually two very different things. What you seem to be describing is an arbitrary generator. But a little more description would be useful.
     
  4. Ivica

    Thread Starter New Member

    Jan 6, 2009
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    I think you are right. Its an arbitrary generator.
    It needs to have three or four period which could creating a loop.
    Every half period needs to be different by amplitude and time duration.
    And must be build in Electronic Workbench.
    Any information are welcome.
     
  5. mik3

    Senior Member

    Feb 4, 2008
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    Use a microcontroller with an analog output or in combination with a DAC (if it doesn't have an analog output) and generate your signals.
     
  6. bertus

    Administrator

    Apr 5, 2008
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    Hello ,

    @ mik3
    This is not in hardware, but software.

    @Ivika

    Can you make a table of values and loop this in Electronic Workbench ?
    I do not know the software.

    Greetings,
    Bertus
     
  7. mik3

    Senior Member

    Feb 4, 2008
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    I am sorry for the misunderstanding, I thought he meant his electronics lab!!
     
  8. Ivica

    Thread Starter New Member

    Jan 6, 2009
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    I must build a generator in program Electronic Workbench which generate signal like this in example. Every half period needs to be different by amplitude and time duration/frequency.
    How to built that generator in electronic workbench and what
    components to use?
    Thanks!

    Example :
    first half period: voltage: 0.5V, frequency: 8Hz
    second half period: 1V, 7Hz
    third half period: 2V, 6Hz
    four half period: 3V, 5Hz
    five h.p.: 4V, 4Hz
    6 h.p.: 5V, 3Hz
    7 h.p.: 6V, 2Hz
    8 h.p.: 7V, 1Hz
    9 h.p.: 0.5V, 8Hz...
     
  9. bertus

    Administrator

    Apr 5, 2008
    15,647
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    Hello,

    You know the frequency, so you can calculate the time a halfcycle takes.
    What should be the shape during this halfcycle ?

    Greetings,
    Bertus
     
  10. Ivica

    Thread Starter New Member

    Jan 6, 2009
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    Shape of halfcycles can be sinusoidal.
     
  11. Ivica

    Thread Starter New Member

    Jan 6, 2009
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    Do you need some other information to help me? Is there anything else you can tell me so that I can use for my project?
     
  12. Ivica

    Thread Starter New Member

    Jan 6, 2009
    7
    0
    I have made some progress with my project, so I would like you to see what is it about and let me know if maybe you have some other solution? Take a look at the attachment.
    View attachment Desktop.zip
     
  13. Ivica

    Thread Starter New Member

    Jan 6, 2009
    7
    0
    Don t tell me that there is now body that knows solution to my problem
     
  14. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    Those of us without EWB cannot read your files. We therefore cannot see your schematics. Can you save them in a pdf format? Or some other more common format?
     
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