In , 'Doc wrote:

The point being, if the power supply is not capable of
supplying the current required on SSB voice peaks, then the
power supply is too small to start with. The logical 'cure'
for a 'too small' power supply is a larger power supply. Any
thing else is a 'kloodge', a crutch to prop up a cripple.
A capacitor does supply some additional current to the
system if it's large enough, but even with very large capacitors
the supplied current is going to be very, very tiny in relation
to the total current draw. Something else you should remember
is that the power supply is also going to have to charge or
re-charge that capacitor when it is drained. That means that
there is no increase in total current in the system, in fact,
there is a decrease since capacitors are not 100% efficient
(they do have loss). This means that the current demand on the
power supply has increased and the 'hole' is just getting
deeper.
Capacitors 'work' in audio systems because they 'rob' current
from one part of the audio signal and 'deposit' it in another
part of the audio signal. If the purpose is to accentuate the
high frequencies, then the 'extra' power is robbed from the
lower frequencies (or visa-versa). The total average power of
the audio signal is not changed (increased), it's only re-
ditributed.

Exactly!

Some things with audio system do carry over in to RF power
amplification systems, but the use of capacitors in the way you
want to use them, isn't one of them...
'Doc

The power demands of an SSB amp are roughly equivalent to an audio amp simply
because of the way SSB works (low input signal, low output power; high input
signal, high output power). The current draw follows the audio almost perfectly.
Caps -do- help for SSB.






=============

"...but I admitted I was wrong, Like a man! Something you and QRM
have a problem with. You guys are wrong and you both know it and
are both too small to admit it."
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The power demands of an SSB amp are roughly equivalent to an audio amp simply
because of the way SSB works (low input signal, low output power; high input
signal, high output power). The current draw follows the audio almost perfectly.
Caps -do- help for SSB.

Not even close. SSB prefers compression and HI-FI abhors it.

The difference between the two is a least 6db, therefore SSB takes
4 times the capacitance to make the same difference that a HI-FI
could show by using these caps.

The example (dx1600) requires at least 6 farads to make a difference.

In , wrote:



The power demands of an SSB amp are roughly equivalent to an audio amp simply
because of the way SSB works (low input signal, low output power; high input
signal, high output power). The current draw follows the audio almost perfectly.
Caps -do- help for SSB.

Not even close. SSB prefers compression and HI-FI abhors it.

The difference between the two is a least 6db, therefore SSB takes
4 times the capacitance to make the same difference that a HI-FI
could show by using these caps.

The DC input power follows the audio input, compressed or not. Is that concept
too difficult for you to comprehend?

The example (dx1600) requires at least 6 farads to make a difference.

Where's the math, Tnom?






=============

"...but I admitted I was wrong, Like a man! Something you and QRM
have a problem with. You guys are wrong and you both know it and
are both too small to admit it."
---- Twistedhed ----

=============


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On Tue, 09 Dec 2003 19:12:21 -0800, Frank Gilliland
wrote:

In , wrote:



The power demands of an SSB amp are roughly equivalent to an audio amp simply
because of the way SSB works (low input signal, low output power; high input
signal, high output power). The current draw follows the audio almost perfectly.
Caps -do- help for SSB.

Not even close. SSB prefers compression and HI-FI abhors it.

The difference between the two is a least 6db, therefore SSB takes
4 times the capacitance to make the same difference that a HI-FI
could show by using these caps.

The DC input power follows the audio input, compressed or not. Is that concept
too difficult for you to comprehend?

Trying to create a divergence away from the truth?

The truth is not gained by equating DC input to output. The truth is
gained by comparing SSB audio compression levels to that of HI- FI
audio compression levels.

The example (dx1600) requires at least 6 farads to make a difference.

Where's the math, Tnom?

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In , wrote:

On Tue, 09 Dec 2003 19:12:21 -0800, Frank Gilliland
wrote:

In , wrote:



The power demands of an SSB amp are roughly equivalent to an audio amp simply
because of the way SSB works (low input signal, low output power; high input
signal, high output power). The current draw follows the audio almost perfectly.
Caps -do- help for SSB.

Not even close. SSB prefers compression and HI-FI abhors it.

The difference between the two is a least 6db, therefore SSB takes
4 times the capacitance to make the same difference that a HI-FI
could show by using these caps.

The DC input power follows the audio input, compressed or not. Is that concept
too difficult for you to comprehend?

Trying to create a divergence away from the truth?

Hardly. I'm trying to make you understand a fundamental concept of radio
communications that has eluded your meager education.

The truth is not gained by equating DC input to output. The truth is
gained by comparing SSB audio compression levels to that of HI- FI
audio compression levels.

You are truly lost.






=============

"...but I admitted I was wrong, Like a man! Something you and QRM
have a problem with. You guys are wrong and you both know it and
are both too small to admit it."
---- Twistedhed ----

=============


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The DC input power follows the audio input, compressed or not. Is that concept
too difficult for you to comprehend?

Trying to create a divergence away from the truth?

Hardly. I'm trying to make you understand a fundamental concept of radio
communications that has eluded your meager education.

The truth is not gained by equating DC input to output. The truth is
gained by comparing SSB audio compression levels to that of HI- FI
audio compression levels.

You are truly lost.

More accurately you are truly lacking in common sense.

A compressed audio signal at its highest compression would
approach a single tone or carrier as far as a SSB amp goes. With
this much compression no reasonable amount of capacitors can
be useful on the 12 volt lead.

On the other hand just and intermittent spike here and there will only
require a minimal amount of capacitance on the 12 volt lead and can
make a difference. If you graphically plotted the capacitance needed
for total compression (carrier), to no compression (spikes), then
you would have a linear graph that would show that the amount of
capacitance needed is directly related to the percent of the duty of
the amp.

The caps work better if the have time to recover. If they can't
recover then the are useless. A SSB signal has more compression than
a HI-FI signal., so dx1600 with one farad on SSB would be one of those
points in between. total compression and no compression It wouldn't
have adequate time to recover in order to be worth the cost.

In , wrote:


The DC input power follows the audio input, compressed or not. Is that concept
too difficult for you to comprehend?

Trying to create a divergence away from the truth?

Hardly. I'm trying to make you understand a fundamental concept of radio
communications that has eluded your meager education.

The truth is not gained by equating DC input to output. The truth is
gained by comparing SSB audio compression levels to that of HI- FI
audio compression levels.

You are truly lost.

More accurately you are truly lacking in common sense.

A compressed audio signal at its highest compression would
approach a single tone or carrier as far as a SSB amp goes. With
this much compression no reasonable amount of capacitors can
be useful on the 12 volt lead.

Math, Tnom. Where's the math?

On the other hand just and intermittent spike here and there will only
require a minimal amount of capacitance on the 12 volt lead and can
make a difference. If you graphically plotted the capacitance needed
for total compression (carrier), to no compression (spikes), then
you would have a linear graph that would show that the amount of
capacitance needed is directly related to the percent of the duty of
the amp.

Plot it and post it.

The caps work better if the have time to recover. If they can't
recover then the are useless. A SSB signal has more compression than
a HI-FI signal., so dx1600 with one farad on SSB would be one of those
points in between. total compression and no compression It wouldn't
have adequate time to recover in order to be worth the cost.

Math, Tnom. Where's the math, you worthless pile of troll dung?







=============

"...but I admitted I was wrong, Like a man! Something you and QRM
have a problem with. You guys are wrong and you both know it and
are both too small to admit it."
---- Twistedhed ----

=============


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