Connect with us

using soundcard output as oscillator?

Discussion in 'Electronic Design' started by [email protected], Feb 26, 2007.

Scroll to continue with content
  1. Guest

    Hi, I would like to use my soundblaster live as a driving signal for a
    transistor to create an oscillator. I want to use this to drive a high
    voltage coil. This way I can easily vary my frequency and duty cycle
    using cool edit.

    Will this be possible? What circuitry will I need around this?

    Thank you

    Johan Wagener
     
  2. Guest

    Hi, many many moons ago, when dinosaurs still roamed the earth,
    and I was in my school days, in the evening I used an old toobe
    amplifier, 4W, and connected the output of an (also very old) car
    ignition
    coil.
    Then I fed back some of the output of that amplifier to the input,
    causing
    it to *oscillate*, and the car bobbin stepped
    up the voltage quite a bit so it could even power a CRT.

    So, as you in this age, already have a tone generator (in your cool
    editor)
    all you have to do is strip a car, get the HV coil, and get an audio
    amplifier.
    Try 1 kHz.

    Or you can just forget the PC and editor and make a pulse generator
    with some
    chips (not potatato, but silicon), but that would require *soldering*,
    and in
    some areas of the world that would require you to be *leadfree*.

    It is late, and my movie starts in 2 minutes, I have to do other
    things too, so
    this is a shorted form guide.
    BTW I was lying about those dinosaurs.
     
  3. John Barrett

    John Barrett Guest

    Look at the 555 timer chip -- it can be set up as an oscilator with variable
    frequency and duty cycle using a few resistors and capacitors -- there are
    plenty of schematics on the net that show exactly how to set one up to drive
    a coil for high voltage !! (much easier to twist the knob on a poteniometer
    than make a new wave file in CoolEdit)
     
  4. I don't see why it won't work for you, but you should "buffer" the output of
    the sound card by using (at least) an op-amp. If high voltage will be
    involved then you should electrically isolate the computer from the circuit.
    People will be able to help you better if you tell them more about your
    plans. Do you have a schematic? How much voltage?
     
  5. Bob Masta

    Bob Masta Guest

    My Daqarta package has a built-in signal generator that
    can do this for you... no use re-inventing the wheel!
    And it has *lots* of waveform and modulation options.

    Note that while Daqarta is nominally shareware, the
    signal generator part is really freeware since it continues
    to work after the trial period. You are welcome to
    use it forever that way.

    Please let me know if you have any problems,
    either here or via the contact form on the site.

    Best regards,


    Bob Masta

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
    www.daqarta.com
    Scope, Spectrum, Spectrogram, Signal Generator
    Science with your sound card!
     
  6. Sjouke Burry

    Sjouke Burry Guest

    I have used a number of programs to use SB as
    oscillator, but cant find the download sites
    anymore.
    Have zipped them and put them on my side,look at
    http://home.planet.nl/~burry004/sound.zip
     
  7. Rich Grise

    Rich Grise Guest

    .
    Yeah, but I bet you had to walk to school 25 miles uphill both
    ways through 10 feet of snow, with only tree bark for shoes. ;-)

    Cheers!
    Rich
     
  8. Robert Baer

    Robert Baer Guest

    Impossible! Only *dogs* bark!
     
  9. I can confirm those also works in Linux in wine windows emulator.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-