headphone audio output voltage range

M

Michael

Guest
Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

__ __
/ \ /
/ \ /
-------\------/----- 0 V
\ /
\__/



or like this?

__ __
/ \ /
/ \ /
\ /
\ /
_________\__/________ 0 V


Thanks!

Michael
 
On Oct 12, 10:24 am, Michael <mrdarr...@gmail.com> wrote:
Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

   __            __
  /  \          /
 /    \        /
-------\------/-----   0 V
        \    /
         \__/

or like this?

   __            __
  /  \          /
 /    \        /
       \      /
        \    /
_________\__/________  0 V

Thanks!

Michael
Click to expand...


Forgot to clarify - I was asking what the headphone output looks like
on CD players, MP3 players and the audio outputs of computers and
receivers.
 
On Tue, 12 Oct 2010 10:24:14 -0700 (PDT), Michael
<mrdarrett@gmail.com> wrote:

Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

__ __
/ \ /
/ \ /
-------\------/----- 0 V
\ /
\__/
Click to expand...
Yes.

or like this?

__ __
/ \ /
/ \ /
\ /
\ /
_________\__/________ 0 V
Click to expand...
No. That would waste power and probably add distortion.

John
 
On Tue, 12 Oct 2010 10:31:47 -0700 (PDT), Michael <mrdarrett@gmail.com> wrote:

On Oct 12, 10:24 am, Michael <mrdarr...@gmail.com> wrote:
Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

   __            __
  /  \          /
 /    \        /
-------\------/-----   0 V
        \    /
         \__/

or like this?

   __            __
  /  \          /
 /    \        /
       \      /
        \    /
_________\__/________  0 V

Thanks!

Michael



Forgot to clarify - I was asking what the headphone output looks like
on CD players, MP3 players and the audio outputs of computers and
receivers.
Click to expand...
Where is 0V defined? If it's the negative terminal of the battery, the
waveform will look like the bottom one. If it's the opposite terminal of the
headphone, your waveform will look like the top. A more important question
was what the current waveform looks like (should look like the top or you're
wasting power and perhaps damaging the headphone).
 
On Oct 12, 1:58 pm, John Larkin
<jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Tue, 12 Oct 2010 10:24:14 -0700 (PDT), Michael



mrdarr...@gmail.com> wrote:
Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

  __            __
 /  \          /
/    \        /
-------\------/-----   0 V
       \    /
        \__/

Yes.

or like this?

  __            __
 /  \          /
/    \        /
      \      /
       \    /
_________\__/________  0 V

No. That would waste power and probably add distortion.

John
Click to expand...

Ok thanks!
 
"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:uui9b61jnbd75pu92octeqhbll6mudps3u@4ax.com...
On Tue, 12 Oct 2010 10:24:14 -0700 (PDT), Michael
mrdarrett@gmail.com> wrote:

Does the audio output voltage swing negative, or does it stay
positive?

Put another way, does the output waveform look like this (view in
fixed font):

__ __
/ \ /
/ \ /
-------\------/----- 0 V
\ /
\__/




Yes.

or like this?

__ __
/ \ /
/ \ /
\ /
\ /
_________\__/________ 0 V



No. That would waste power and probably add distortion.

John
Click to expand...
When I was about 14 years old, and starting to get interested in
electronics, I could not understand how a single-ended car stereo amplifier
could put out 0 to 12v - before the output capacitor - and still have
current flow both ways at the speaker. Understanding the function of the
output capacitor took me a while to comprehend fully.

Bob
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