Learn How VoiceMax Increases Your Transmission Range...
 

Have a nice day. I think there is little more that can be accomplished
continuing this banter. You can believe what you wish.

lol

Waveform...
 

"Frank Gilliland" wrote...

I think the key word here is 'waveform', where 'form' is the issue and
scale or phase are not. Because ANY device, active or passive, will
introduce some phase delay and amplitude variation to the signal. So
be practical or be a purist, but you're both really just saying the
same thing.

What's up with you, playing peace-maker?

The difference of opinion here appears to be whether waveform
is defined by the absolute value at the peak, rather than
relative changes throughout a cycle.

In the noted references, signal amplitude does not affect
the waveform of the signal.

Considering the qualifications of these chaps, and the fact
that they each have said the same, I am somewhat reluctant
to consider their words, math and diagrams to be incorrect.


Now if you wanted to take this to a philosophical level, no two
signals can EVER be identical for the simple reason that they can
always be differentiated,

Ah, signals... fine. The term "signal" can cover everything, the
slightest change of anything (including amplitude) could be taken
as a change in the signal.

I would not argue that a larger version of a sinewave may not
be considered an identical *signal* to the smaller version, but
I would argue that the waveform property of the signal has
not changed.


if not by amplitude or phase then by
temporal location (one is the input, the other is the output) or by
physical location (you measure this one here and that one there). But
by the same rule of identity I guess that means no two opinions will
ever be identical either, so argue away.....

You act as peace-maker, then encourage us to argue?


Regards,
Peter.
http://www.citizensband.radiouk.com/

Waveform...
 

"james" wrote...

I just don't like the implication that all sinusiods are
unchanged by amplification,

I neither stated or implied that they are "all sinusiods
are unchanged". You have clearly assumed that from a
simple statement.

Let's be clear about what I stated, which is what several well
qualified people have also stated in their books... that the
waveform is unchanged by amplification.

That is the position of the named engineers, lecturers and heads,
and I am not about to call them stupid by saying it is not as they
state in their books.

Before arguing further, that these people are all wrong and
their employers really should have given you the job, please
look at my other replies. Maybe it will clear up why you
believe these people wrong.


again it is a minor point.

For a minor point, you certainly are willing to spend time
claiming the authors to be "wrong" or "incorrect".
Not something I would do on a "minor point", and without
some damn good references or better qualifications than
all those authors.


Regards,
Peter.
http://www.citizensband.radiouk.com/

Waveform...
 

"james" wrote in message
...
On Thu, 12 Jul 2007 05:23:51 +0100, " Peter"
wrote:

+++With pure amplification, the signal may have altered in amplitude,
+++but a sinusoidal waveform will still be a sinusoidal waveform on
+++the output. The sine, angular frequency and phase shift are
+++all unchanged.
*************

Wrong

No, you are confusing issues with stuff like...

Depending on how the amplifier is configured there is a phase shift.

Now, read my part again, carefully. I did not mention amplification
with phase shift or specific amplifier circuits. You are several
steps ahead of yourself, considering specific circuits before
considering the required function...
Amplification.

If I asked what was the purpose of a light bulb, would you start
talking about heat and fingers getting burned changing them when
they have been on a few minutes?

With that in mind, what is the purpose of an amplifier and what
is amplifictation? I'll give you a clue... heat, distortion, phase
shift, specific components and negative feedback do not come
in at this stage.

To design something, first you must consider the purpose. Otherwise,
you can end up with a big, empty, useless dome and the whole world
laughing at you.
Believe me, us Brits know all about that one.


In a Common emmiter configured transistor amp
there is a 180 degree shift in the pahse.

Only the emitter(source) follower in a semiconductor amplifier
will not cause a phase shift.


As you should have worked out from the above, phase shift
is not amplification, and it is not the basic function of
an amplifier.


Correct that the angular frequency is not changed and that
a sine wave is a sine wave, but still the amplitude has changed.

Nobody said it hasn't.

The difference of opinion here appears to be whether waveform
is defined by the value of the amplitude at the peak.
Acccording to the noted and extremely well qualified gentlemen,
the form is not dependent upon the peak value.

You appear to be confusing the words signal and waveform.

Although a change to any of the properties of a signal will
be a change in that signal, you can change any one of it's
properties without changing the others.
So, changing the signal amplitude does not change it's
waveform.

The signal amplitude is absolute and measured in volts or
amps. When assessing the waveform of the signal, waveform
amplitude is relative to the signal amplitude and so has a
maximum value of 1.

No matter how accurate your mathematics, if you do not
correctly identify the problem at hand then you may be
working on the wrong problem and your result will be
not be the required solution.


Regards,
Peter.
http://www.citizensband.radiouk.com/

small company...
 

"Telstar Electronics" wrote...

They'll know that I have a very small company. I don't see a thing
wrong with that.

Nothing wrong with a small company, but you have to use your
advantages... you can be damn sure your large competitors will
use theirs.

They can bulk buy to reduce costs, they can throw big money at
big advertising. They can even take a loss just to wipe out the
competition. They can hold out longer than the small guy then,
once he has gone, they can bang the prices up even further.

If they don't like that... nothing I can do about it.

If you don't believe that you can win people over, then you
had best give up now.

You can do nothing about the big business advantages and image,
but you can use your small business advantages.
If you are unwilling to do that, then why should the customer
not simply take the cheaper product from the well known big
guy? What are you offering that he doesn't?

Dont say "quality"... how long has it been since CBers gave a
flying sh1t about quality rather than price?

Items are often discontinued by a manufacturer when their profit
margin becomes unacceptable in the marketplace.

All products are subject to the life cycle concept.
Initially, they would have been selling it at a huge profit. Then, as
the market slowed, they would have dropped to a reasonable profit.
By the time it is discontinued, it should have made plenty of money
for them.

Why should I continue to offer a product that I can't make
a reasonable profit on?

You shouldn't, but did you properly consider profit margin from
the beginning? It must be remembered that time is money and,
if you designed the product, design time is cost that has to be
recovered long before discontinuing the product.


Do you run a business?

Not at the moment, but I have and I am considering going down
that route again. But not on the basis of a single product,
unless it was an incredible product that would have a wide
appeal to a mass market.
CB products simply don't come anywhere near. Not that I
wouldn't want to offer them, just that I wouldn't pin the
survival of the business on them.


Regards,
Peter.
http://www.citizensband.radiouk.com/

lol...
 

"Telstar Electronics" wrote...

Have a nice day. I think there is little more that can be
accomplished continuing this banter. You can believe
what you wish.

lol

Laugh all you like, but this guy has the brass balls
needed to be a politician.

I posted the written teachings of several well
qualified and respected engineers, lecturers and
heads of educational departments.
With nothing more than pure bravado, James
says, "wrong".

This guy doesn't even attempt to show that he has the
qualifications to call such people "wrong", or even
to suggest that they are "partly correct". All he has
is his balls, big brass ones.

And, when I refuse to take his word over those of the
qualified experts, does he crumble and submit to the
accepted facts? Heck, no... he simply replies:
"you can believe what you wish".

I don't know about your political system but, over here,
we have ministers for just about everything. These guys
are shifted between departments, never appearing to
have qualifications in that field.
Yet, with nothing more than bravado, they can tell any
real experts and the whole of the public that they are
"wrong".
They can set up a Web site asking for public opinion,
then openly refuse to accept the millions of replies.

James is wasted here, he should be in politics.


Regards,
Peter.
http://www.citizensband.radiouk.com/

waveform...
 

"james" wrote...

Peter

Have a nice day. I think there is little more that can be
accomplished continuing this banter.

If, after posting several references by well qualified
people, a person still says the earth is flat... then there
is nothing more that one can do for that person.

You can believe what you wish.

As you are being kind enough to allow me to make my
own choice, I'll take the words of the experts with
qualifications, experience and the full trust of
educational establishments and the MoD.


Regards,
Peter.
http://www.citizensband.radiouk.com/