Sound output voltage

  • Thread starter Thread starter Bob Bedford
  • Start date Start date
B

Bob Bedford

Hi,

I'd like to know the maximum output voltage of the sound jack on
motherboards. It is possible to output 10v on left and 10v on right ?

Thanks for information.

Bob
 
Hi,

I'd like to know the maximum output voltage of the sound jack on
motherboards. It is possible to output 10v on left and 10v on right ?

Thanks for information.

Bob
Click to expand...


"Typically", the sound is powered by a linear 5V regulator,
so output is between 0 - 5V and has an output coupling
capacitor. IOW, pseudo +- 2.5V rail to rail output.

It might help if you mentioned a bit about your purpose
(the more detail the better, some of us built our own amps).
A voltage gain stage is not a particularly difficult
subcircuit to tack on to an audio output, but the required
current is the "catch" in how elaborate it needs to be
(buffered), and seldom is 10V necessary unless you are
trying to drive a high z load.
 
kony said:
"Typically", the sound is powered by a linear 5V regulator,
so output is between 0 - 5V and has an output coupling
capacitor. IOW, pseudo +- 2.5V rail to rail output.

It might help if you mentioned a bit about your purpose
(the more detail the better, some of us built our own amps).
A voltage gain stage is not a particularly difficult
subcircuit to tack on to an audio output, but the required
current is the "catch" in how elaborate it needs to be
(buffered), and seldom is 10V necessary unless you are
trying to drive a high z load.
Click to expand...

Hi Kony, thanks for replying.

I've no knowledge at all about hardware. My problem is simple: I bought some
years ago a graphic card shipped with a pair of shutter glasses. This allow
to see 3d games on the screen by shutting the right and left shutter in
accordance with the image shown on the screen. So every eye see a different
image and it seems you have 3d images.
Sadly, the graphic card is dead and the 3d glasses only worked on it (a jack
plug is used for power the shutter glasses).
So I thinked about using the sound card to control such glasses. Now I'm
thinking that's a bad idea since the 10 volts needed to control the glasses
can't be reached by the sound card.

So my question is: is it possible to control such glasses using an USB port
? the USB port has a 12 volts output and maybe using 2 usb ports will do the
trick
There is a solution here: www.stereo3d.com but I can't build a homebrew
controller since I'm not equiped to build a circuit and also don't know how
to do so.
http://www.stereo3d.com/homebrew.htm the desired controler is here:
3-in-1-VGA-pass-through controller with sync-doubler and auto-sync
(http://www.nord-com.net/accot.schulz/Shutters/controller/old_pll/LCD_controller2.html)
I don't know anything about what's said on those pages...no knowledge at
all...

If anybody can help...

Bob
 
I've no knowledge at all about hardware. My problem is simple: I bought some
years ago a graphic card shipped with a pair of shutter glasses. This allow
to see 3d games on the screen by shutting the right and left shutter in
accordance with the image shown on the screen. So every eye see a different
image and it seems you have 3d images.
Sadly, the graphic card is dead and the 3d glasses only worked on it (a jack
plug is used for power the shutter glasses).
So I thinked about using the sound card to control such glasses. Now I'm
thinking that's a bad idea since the 10 volts needed to control the glasses
can't be reached by the sound card.
Click to expand...

First, I know nothing about the electrical requirements or
operation of shutter glasses.
So my question is: is it possible to control such glasses using an USB port
Click to expand...

If you had some-inbetween microcontroller, maybe, but this
is a fair bit more difficult than achieving a voltage gain
from a sound card output.



? the USB port has a 12 volts output and maybe using 2 usb ports will do the
trick
Click to expand...

?? A USB port has 5V power and very low signaling output.
It would be necessary to know the requirements of the
glasses or a lot more experimentation will be required.


There is a solution here: www.stereo3d.com but I can't build a homebrew
controller since I'm not equiped to build a circuit and also don't know how
to do so.
Click to expand...

I suggest that is probably by far the easiest means to your
goal, if it is beyond your skills you might as well give up.
 
Bennett Price said:
I'd look on Ebay for a replacement card.
Click to expand...
The card is very old and also I'd like to make my machine evolutive without
the need to stick on one video card.

Many people have the same problem, with shutter glasses not being able to
use their shutter glasses anymore as their video card is over or they
changed.

In a previous post I've sent the link to a possible solution but I'm not
able to build such circuit, that's why I'm thinking of an easier solution.

Buying the same video card isn't an issue.

Bob
 
Bob Bedford said:
In a previous post I've sent the link to a possible solution but I'm not
able to build such circuit, that's why I'm thinking of an easier solution.
Click to expand...

Why are you not able to build it? Do you not have use of your hands and
mind?

Jon
 
Jon Danniken said:
Why are you not able to build it? Do you not have use of your hands and
mind?

Jon
Click to expand...
Because I've never learned soldering and such stuffs. I don't even know how
to create the circuit to make soldering on and where to order parts to for
my needs...

This may seems simple for you but it doesn't seem too simple for my
 
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