Sound operated light source

M

Maddy

Guest
I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Thanks
Nitin
 
Maddy wrote:
I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Thanks
Nitin
Click to expand...
You did not tell us what device you are using, so it is
impossible to state with certainty that it will not
power the LED. It is doubtful that it will, but you
can use the output to control another circuit that
will power the LED. Is that what you want to do?

Ed
 
On Aug 28, 8:04 pm, Maddy <mniti...@gmail.com> wrote:
I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Thanks
Nitin
Click to expand...
The problem is the voltage signal at the headphone jack is probabaly
much lower than needed to light an LED.

You might try a transformer and put the low voltage side in series
with the audio signal. Then use the higher voltage side to drive the
LED, if you can get a couple volts out of it. Use a
low power LED that lights with just a couple milliamps.

-Bill
 
On 2008-08-29, Maddy <mnitin73@gmail.com> wrote:
I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Click to expand...
Maybe you could run software that displays a bar-graph of the sound
output amplitude.

Bye.
Jasen
 
On Aug 29, 8:31 am, ehsjr <eh...@NOSPAMverizon.net> wrote:
Maddy wrote:
I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Thanks
Nitin

You did not tell us what device you are using, so it is
impossible to state with certainty that it will not
power the LED.  It is doubtful that it will, but you
can use the output to control another circuit that
will power the LED.  Is that what you want to do?

Ed
Click to expand...
Yes, I want the output to control another circuit that will power the
LED. I am a novice and will be taking help from others , so would be
thankful if you could tell me where I could find such a circuit.
 
Maddy wrote:
On Aug 29, 8:31 am, ehsjr <eh...@NOSPAMverizon.net> wrote:

Maddy wrote:

I am learning morse code. There are software available which convert
any text into morse and give the output to the headphone jack. I was
wondering if this sound output at the headphone/speaker jack can be
used to power a LED or incandescent bulb? Would be thankful if anyone
can suggest a solution.
Thanks
Nitin

You did not tell us what device you are using, so it is
impossible to state with certainty that it will not
power the LED. It is doubtful that it will, but you
can use the output to control another circuit that
will power the LED. Is that what you want to do?

Ed


Yes, I want the output to control another circuit that will power the
LED. I am a novice and will be taking help from others , so would be
thankful if you could tell me where I could find such a circuit.
Click to expand...
See the following url:
http://www.rainbowkits.com/kits/vox-1p.html

Ed
 
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