Re: Filter problem

On Sat, 14 Jun 2025 07:52:58 -0700, john larkin <jl@glen--canyon.com>
wrote:

On Sat, 14 Jun 2025 12:52:49 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
>

Liz Tuddenham <liz@poppyrecords.invalid.invalid> wrote:

john larkin <jl@glen--canyon.com> wrote:
 
[...]
 
 

 
This is the classic reference:
 
https://www.amazon.com/s?i=garden&srs=12653393011&bbn=1063498&rh=n%3A10553
98%2Cn%3A284507

 
Amazon won't let me see it because I am not in the USA.  In any case,
won't buy anything from Amazon   Do you have another reference to the
book (I presume it is a book)?
 

>
From the description, I expect John means Williams & Taylor,
<https://archive.org/details/ElectronicFilterDesignHandbook4thEd/page/n2/mode/1up>
or Zverev
<https://www.amazon.com/Handbook-Filter-Synthesis-Anatol-Zverev/dp/0471749427>.
Zverev is my personal fave—I’ve used it occasionally for over 40 years, but
that’s probably a minority taste.
>
Cheers
>
Phil Hobbs

>
Yes, Williams.
>
Does Zverev have tables of filter values? I generally nab a table from
Williams, denormalize and maybe transform it with my program, then
Spice it with part values that I can get, or preferably already have.

Or better yet, use the NuHertz passive filter program. It can design
LC filters with standard value parts.