.

Glen:

.

One might spend a mountain of time in trying to

meet your newly stated criteria. But I'm puzzled.

What would be the objective?  There is surely a

huge family of specialized, and optimized, cells

that were developed to generate the waveforms

that you list.  What am I missing?

.

The Lone Arranger

Glen, I also think that forcing of the Wien oscillator to sawtooth waves is not very appropriate. Maximally we can get the "limitation" - with the amplifier's greater gain. But we probably do not want to. Mostly, we want the least possible distortion :-)

Josef

Barrie,

I always look forward to your comments .

You have never missed anything that you examined.

Glen

Glen,

Concerning ( from cisoidal to harmonic)

The word "cisoidal" is new to me.  Please provide an explanation ;-)

Best regards

ERIK

Erik,

That is a push ... beyond my grasp. 

In this forum many things are new to me.

I should be asking you what is the range "from cisoidal to harmonic".

Glen

http://www.geocities.ws/glene77is/GC_ET_AFP-bpf.html

Dear Glenn and Erik,

the meaning would simply be "complex simusoidal".

Please, see the attached document

Simone,

Thank you. 

Good point about the proper label "complex sinusoidal".

I see the Research Gate forum as

(1) a place where students / engineers can post a problem

   without embarrasment or severe critique .

(2) a place to explore new thoughts, and grow intellectually 

without being put-aside for  non-academic value.

Time will tell the pragmatic results.

I have other questions ,

mainly about Direct RF conversion to audio, without an I.F. circuit,

and the application of quadrature circuitry in this operation .

Such things occupy my thoughts now .  

Simone, thank you.

.

Fellow Travelers:

.

I read briefly the pdf paper suggested by

Simone and realize that my usage of the

term has been quite incorrect. In reading

various papers in the past it seemed the

authors were using the word 'cisoidal' to

avoid having to write out  'signals having

either a strictly cosine or sine waveform'.

Obviousy, the sole difference in the latter

case is the relative phase. 

.

Although a mistake in interpretation, on

my part, it leaves me wondering if there

may already be a neat way of structuring 

one's phrases when referring to the idea

of 'waveform-pairs having zero and pi/2

relative phase'. 

.

The word 'harmonic' is not very precise,

because it says nothing about the purity

or exact conformance to a trigonometric

basis for this special pair of time forms; 

and the hybrid 'co+sinewave' is terrible....

.

Any suggestions?

.

The Lone Arranger

Barrie,

A very thorough comment

and invite to further analysis.

IF

all Oscillators have some relation to the sine-and-cosine family,

and their natural periodic nature,

THEN, perhaps ,

the only distinction between plausible classes of Oscillators

may lay in the historical method behind their development. 

But, this response belongs, properly, in the prior thread.

Glen