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RE: Thanks

100.16.166.8

In Reply to: RE: Thanks posted by Tre' on October 11, 2024 at 18:42:52

I think Ive posted this before.

turns everything upside down
3d tube graphs show the hidden monster (Open in New Window)

Follow Ups:

I believe that is just.... - Tre' 16:32:33 10/12/24 (3)
another way of looking at a dynamic curve.
In 2D, once you pick your operating point and plot your load line, you can then plot a dynamic curve (transfer function curve).

Here's a tube that is not very linear, with an operating point (and load line) that are chosen poorly making things worse.

The non-linearity of the tube, coupled with poorly chosen operating points, cause one half of the wave form to be exaggerated and the other to be truncated.
If the tube's operation were linear the ellipse would be symmetrical. Because of the distortion the ellipse is egg shaped.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
- https://www.youtube.com/watch?v=AYZvgAKpb38 (Open in New Window)
- RE: I believe that is just.... - elblanco 16:53:35 10/12/24 (2)
  but its super cool.
  
  I have that Preisman book and it always winds up being low and hot is best.
  
  and not necessarily the flatness of dynamic line.
  - Low and Hot? - FlaCharlie 07:47:03 10/14/24 (1)
    I've seen operating points described like this many times over the years and always found it vague and confusing. I'm never even sure if those who use these terms even mean the same thing.
    
    Does "low and hot" mean lower voltage and higher current or does it mean lower current and higher voltage?
    - RE: Low and Hot? - elblanco 10:42:34 10/14/24 (0)
      yes. lower voltage higher current.

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