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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: more X-rays  Silvertel PoE Supply
Date: Thu, 03 Oct 2024 06:50:30 GMT
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On a sunny day (Wed, 02 Oct 2024 13:45:56 -0700) it happened john larkin
<jl@glen--canyon.com> wrote in <k0crfjthnt374223489r8ggjnsh3t087ga@4ax.com>:

>On Wed, 02 Oct 2024 15:50:31 GMT, Jan Panteltje <alien@comet.invalid>
>wrote:
>
>>On a sunny day (Wed, 02 Oct 2024 07:45:04 -0700) it happened john larkin
>><JL@gct.com> wrote in <v6mqfjd93ib6q8j7d7ontsaouidieh5b2u@4ax.com>:
>>
>>>On Wed, 02 Oct 2024 06:22:43 GMT, Jan Panteltje <alien@comet.invalid>
>>>wrote:
>>>
>>>>On a sunny day (Tue, 01 Oct 2024 14:16:09 -0700) it happened john larkin
>>>><jl@glen--canyon.com> wrote in <tipofjdtie76lbtd7lc2ger5uo7sglq3p5@4ax.com>:
>>>>
>>>>>
>>>>>https://www.dropbox.com/scl/fo/s6wfz2xtdyd6tv32tq3fp/AET6J4oF84HG2hJMeST6F-E?rlkey=acyvuv4z0h2kg0x97azbed8uo&dl=0
>>>>
>>>>Cannot make out much from those x-rays, pictures are better...
>>>>you can probably see the traces just like that?
>>>
>>>The x-rays are fun, but are admittedly more useful for an opaque
>>>potted module or an IC or discrete semi. I can prety well trace the
>>>Silvertel without them.
>>>
>>>I have a gigantic scary Carribean guy who does the xrays and I wanted
>>>an excuse for taking him to lunch, which turned into an interesting
>>>hike around The Bernal Cut. He trashed the xray system software, and
>>>had to rebuild it, and now it can do movies, which is great.
>>>
>>>I'd like to have some products that can be powered by PoE or a wart,
>>>and may want to put two 24-volt PoE supplies in series to get 48, so I
>>>need to understand how they work. The xrays just help a bit.
>>>
>>>(When burials were outlawed in San Francisco, a railroad was
>>>constructed to Colma for all the dead bodies and headstones. That
>>>forced the Bernal Cut to be dug with people and mules. Colma now has
>>>more dead people than live ones. Some parts of San Francisco are paved
>>>with old headstones that nobody wanted to pay to ship.
>>>https://www.bernalcut.org/  )
>>
>>Found it with google maps...
>>Do you make Xray movies of living things?
>>
>
>I guess we could. All sorts of objects.
>
>I'd like to do one of my hands, which I think has a foreign object
>inside, but the machine is too heavily interlocked.
>
>I had an uncle who got a foot xray for arthritis and they saw a small
>nail inside his toe. He had no idea how it got there.

I had a relative who was a doctor, he had xray equipment
aa a kid I was staying there and asked if I could make an x-ray from my hand.
He objected first, told me too much xray radiation was harmfull,
but then let me xray my hand once and look at it at a big scintilation screen.
normally it would be used to x-ray people.
My hands still work and have not fallen off yet.
So anyways, be careful with the amount of radiation when experimenting.