Re: expresspcb

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "C. Sibley" <a37chevy@xxxxxxxxx>

Regarding those 100W resistors, do they need to be
that big?

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: Vardan
> <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi DC,
>
> A 6 x 8 inch bare PC board without silk or solder
> mask runs $40 each
> in a quantity of 30.  That is almost as much as the
> parts for the
> filter.  It is far cheaper just to use standard G-10
> and drill the
> holes and wire the connections.
>
> McMaster Carr sells a 12 x 12 x .0625 FR-4 sheet for
> $6
>
(<http://www.mcmaster.com/itm/find.ASP?tab=find&context=psrchDtlLink&fasttrack=False&searchstring=8667K211>8667K211).
>
> So it is hard to justify paying so much for a big PC
> board.
>
> PC boards or far more economical when you can pack
> both sides solid
> with surface mount parts rather than mounting 7 inch
> long power resistors.
>
> Cheers,
>
>          Terry
>
> At 02:54 PM 3/21/2006, you wrote:
> >Since Terry is the originator of the "Terry
> Filter", perhaps he
> >would be interested in running a batch of bare
> boards and then
> >selling them to List members.  I'm sure we could
> all use a few
> >spares for future projects.
> >
> >Response Terry F.???
> >
> >Dr. Resonance
> >
> >
> >
> >>Original poster: "Barton B. Anderson"
> <bartb@xxxxxxxxxxxxxxxx>
> >>
> >>Not a bad idea Curt. Cost is proportional to board
> size and the
> >>spacing required would make it expensive. A
> possible solution to
> >>keeping the board at minimal cost (small) while
> also enhancing the
> >>spacing requirements is to make a single side only
> (single side of
> >>the Terry Filter), then just use 2. This would
> eliminate unused
> >>board space between components and would also
> allow for individual
> >>mounting (spacing is then set by proximity of the
> 2 boards and
> >>easily managed by your own mounting and
> placement).
> >>
> >>Take care,
> >>Bart
> >>
> >>Tesla list wrote:
> >>
> >>>Original poster: "C. Sibley" <a37chevy@xxxxxxxxx>
> >>>
> >>>Does anyone have any experience with building a
> NST
> >>>protection filter on a printed circuit board?  I
> just
> >>>became aware of http://www.expresspcb.com and
> thought
> >>>maybe I'd give it a try.  Seems as though the HV
> >>>wouldn't be a problem if you kept it single layer
> and
> >>>allowed adequate spacing.
> >>>
> >>>Thoughts?
> >>>
> >>>Curt.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
>
>
>


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