Some Might Find this Useful

Guest
https://dl.dropboxusercontent.com/u/29948706/reactres.jpg

I think it's pretty neat, and for those who don't automatically do the math in their head right away, useful.
 
Google let me down in finding this. I have had a couple different ones over the years. Of course this is not extremely accurate but it is quick.

I actually dug it up from an old filing cabinet I have had forever.

Actually, if anyone needs, I could scan it at a higher resolution. That copy is at the default on the HP CM1312nfi. I'm pretty sure it can do better.

I remember there being other charts that helped with quick design. One had the mu of a tube plotted against plate load resistance and gave open loop voltage gain, something lke that.

For some reason these things are no longer aropund. Of course we can all do 1 over 2 pi FC, but when it is right there it is even better.

Anyway, if anyone asks for a higher resolution copy I will scna it and upload it. At the moment though, it aeems like it should work fine just the way it is.
 
jurb6006@gmail.com wrote:
Google let me down in finding this. I have had a couple different ones over the years. Of course this is not extremely accurate but it is quick.

I actually dug it up from an old filing cabinet I have had forever.

Actually, if anyone needs, I could scan it at a higher resolution. That copy is at the default on the HP CM1312nfi. I'm pretty sure it can do better.

I remember there being other charts that helped with quick design. One had the mu of a tube plotted against plate load resistance and gave open loop voltage gain, something lke that.

For some reason these things are no longer aropund. Of course we can all do 1 over 2 pi FC, but when it is right there it is even better.

Anyway, if anyone asks for a higher resolution copy I will scna it and upload it. At the moment though, it aeems like it should work fine just the way it is.
Click to expand...

I'd save and print a larger copy for the heck of it.
 
So, do you want a higher resolution copy ?

I'll rescan it, probably tomorrow. Been meaning to play with the settings on that thing.

Actually I should have a highest resolution copy for the archive anyway.

The other thing here is that I am not designing somthing that ned like 43 degrees phas shift but no less than 42 and no more than 44. You don't use these figures for everything anyway.

I usd this waybackwhen, when ?i designed some semi-parametric toe controls. They were force driven OP AMP based, totally mixing. the /bass was +/- 16 dB with the tuirnover continuously variable form 48 to 440 ?hz. Treble was also +/- 16 dB, with the turnover variable from 3 Khz to 10 Khz approximately.

On that one, the tone controls were designed like instrumentation, in a way.. I'll have to redraw it to show you. It is not Bandazall or anything like it.

In fact yes, I am going to redraw that just to see what y'all think of it.
 
jurb6006@gmail.com wrote:
> So, do you want a higher resolution copy ?

sure. This something to print on big paper.

I'll rescan it, probably tomorrow. Been meaning to play with the settings on that thing.

Actually I should have a highest resolution copy for the archive anyway.

The other thing here is that I am not designing somthing that ned like 43 degrees phas shift but no less than 42 and no more than 44. You don't use these figures for everything anyway.

I usd this waybackwhen, when ?i designed some semi-parametric toe controls. They were force driven OP AMP based, totally mixing. the /bass was +/- 16 dB with the tuirnover continuously variable form 48 to 440 ?hz. Treble was also +/- 16 dB, with the turnover variable from 3 Khz to 10 Khz approximately.

On that one, the tone controls were designed like instrumentation, in a way. I'll have to redraw it to show you. It is not Bandazall or anything like it.

In fact yes, I am going to redraw that just to see what y'all think of it.
Click to expand...
 
On Tue, 29 Apr 2014 13:28:14 -0700, jurb6006 wrote:

https://dl.dropboxusercontent.com/u/29948706/reactres.jpg

I think it's pretty neat, and for those who don't automatically do the
math in their head right away, useful.
Click to expand...

It looks like the nomographs in the ARRL Handbook.

Yes, those are neat, but I can remember the formulas well enough, and
have calculators (and a slide rule, in case civilization collapses and I
can't get batteries).

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
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