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using soundcard output as oscillator?

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
 
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

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.
 
J

John Barrett

Jan 1, 1970
0
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

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)
 
A

Anthony Fremont

Jan 1, 1970
0
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?

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?
 
B

Bob Masta

Jan 1, 1970
0
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

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!
 
S

Sjouke Burry

Jan 1, 1970
0
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
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
 
R

Rich Grise

Jan 1, 1970
0
.
BTW I was lying about those dinosaurs.

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
 
R

Robert Baer

Jan 1, 1970
0
Rich said:
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
Impossible! Only *dogs* bark!
 
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