"james" wrote...

Partially correct in your formulae.

It is printed as I gave it on pages 147 & 148 in...

Electrical principles and measurements Level 2
By I. McKenzie Smith
(B.Sc., Dip.A.Ed., C. Eng., M.I.E.E., M.I.E.R.E., F.I.T.E)
Head of the Department of Electrical Engineering,
Stow Colledge, Glasgow.

The words of the noted lecturers, one of whom also worked
for the Ministry of Defence, are incredibly clear... the
waveform does not change.

So I think that what we have here is a perception issue. Try this...

You say that the waveform changes so tell me:
If you amplify a sinusoidal waveform, what waveform does it become?
At what level does a sinusoidal waveform become some other waveform?
Or, at what level is it a sinusoidal waveform?

Can you see where I am going with this?
To say that a large sinewave is not still a sinewave is like saying
a large circle is no longer a circle.

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.

I am not saying that the signal is unaltered, but that the
waveform is still whatever waveform was put in.
Now I don't like to disagree with you but, if you really believe
that an amplified sinewave is not a sinewave, then I really
must stick with the named lecturers and Heads of Departments.
Nothing personal, you understand, but they do have a sh1tload
of letters after their names :~)


BTW: Sometimes I may take a while to reply to messages,
it's just that I have other things to do and just fit this
and other groups in where possible.


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