--- In
Homebrew_PCBs@yahoogroups.com, "adastra_2001"
<adastra_2001@...> wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "derekhawkins" <eldata@>
> wrote:
> >
> > >Are there any free or low cost (<$300) PCB/Schematic
> > >programs that have part libraries of tubes?
> >
> > Looks like there are some Eagle shared user tube related libraries
> > here;
> >
> > http://www.cadsoftusa.com/download.htm
> >
> > Follow the Libraries link.
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "adastra_2001"
> > <adastra_2001@> wrote:
> > >
> >I thank you for the link regarding Eagle Libraries. I have
> downloaded them and I will try them. As far as the reluctance to make
> my own library parts, yes that has a little to do with it as well as
> the difficulty for me to make the physical measurements needed for a
> tube socket that will work in a PCB program.
>
Simple measurement technique:
Take a bottle of ink and place on leads of tube. Take a piece of paper
and blot the tube down on to it. Creating the part really isnt that
hard its just annoying, which is the next step: Take whatever you use
to measure angle degrees and write down the degrees. Then measure the
radius of 1 pin on one side to the other side. Enter the left pin as
negative and the right pin as positive. Remember to set the origin as
0,0 for a the middle, invisible, refrence pin. A free program called
ProgeCAD will let you enter data like this, just remember to enter a
negative angle when going clockwise. Save as DXF or whatever and then
import. Its REAL simple and will save you 300 dollars. The whole
process should take only about 30 minutes.
If you get the numbers for me I could make the DXF file for you
(free), then you will just have to import it to whatever program your
using.