RE: differential probes

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "jimmy hynes by way of Terry Fritz <teslalist-at-qwest-dot-net>" <chunkyboy86-at-yahoo-dot-com>

Hi Terry,

I fixed the changes you mentioned, but probably
created just as many new ones.

I put banana jacks for the input, and BNC for the
output, is that what you wanted? It was tough to get
enough clearance, so Ill just have to chop the boards
up. I think The MOVs have to go on the back, I hope
thats OK. Here are the new files

www.hot-streamer-dot-com/chunkyboy86/diffprb3.jpg
www.hot-streamer-dot-com/chunkyboy86/diffprb4.jpg
www.hot-streamer-dot-com/chunkyboy86/diffprb2.pcb

If I can fix the rest of the problems by 11:00 AM
tomorrow, then I will order them tomorrow.

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
 >
 > Hi Jimmy,
 >
 > At 11:36 AM 7/16/2003 -0700, you wrote:
 > >Hi,
 > >
 > >I used expresspcb for the layout. There are some
 > pictures of it here:
 >
 ><http://www.hotstreamer-dot-com/chunkyboy86/diffprb.jpg>www.hotstreamer-dot-com/chunkyboy86/diffprb.jpg
 > >www.hotstreamer-dot-com/chunkyboy86/diffprb2.jpg
 > >
 > >You can also download the software, and change the
 > layout yourself.
 >
 ><http://www.hotstreamer-dot-com/chunkyboy86/diffprb.pcb>www.hotstreamer-dot-com/chunkyboy86/diffprb.pcb
 >
 > >
 > >
 > >I haven't fixed any of the problems Terry pointed
 > out yet. I am waiting
 > >for the new design.
 >
 > I think you should go ahead and make the changes and
 > get the boards.  I
 > have thought about the spark gaps and all, but I
 > think the MOV design is
 > the way to go.  The fuses could be 1/4 x 1-1/4 low
 > current pig tail
 > fuses.  That would be as good as anything.
 >
 > We simply are not going to be able to protect
 > against "everything" but we
 > can do a lot and this design:
 >
 > http://hot-streamer-dot-com/temp/DiffProbe-5p.gif
 >
 > does just about all that can reasonably be done.  So
 > I think it is time to
 > go for it!  Things may change, but we need the
 > boards to do actual
 > testing.  We are not going to be able to "think
 > through" the remaining
 > unknowns.  We actually have to try it.
 >
 > I don't know how much having the boards made costs?
 > This would probably be
 > a "prototype" and a final design turn would be
 > needed.  I don't know if you
 > wanted to spend money on an totally unproven design?
 >  I can certainly help
 > with the cost of these unknown boards if you want.
 >
 > Cheers,
 >
 >          Terry
 >
 >


=====
Jimmy

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