Re: [PSUBS-MAILIST] Through Hull Connections

[mckellar@earthlink.net]

Warren,

after the various discussions prompted by my email, i tend to agree with 
the 2 separate power supplies - one inside and one out.

data and control, i guess leds and opto-electronics will be the preferred 
strategy - consistent with as few hull penetrations as possible - just 
gotta figure some way to get in and out without hatches :)

another thing i will investigate is high temperature polycarbonate - i know 
it is available, i just dont know what 'high temperature' is in relation to 
plastics and i dont know if it comes transparent.  if not transparent, then 
i might as well use something like metal.

cheers
peter

At 07:52 5/7/03 -0700, you wrote:
>Right on the money. I wouldn't be moving current
>through
>the hull this way, but it can be a very good way to
>communicate with things you need to control. If it is
>acrylic, you can also use LEDs to communicate through
>the hull. Passing power, though...Why not have two
>systems, the major power supply being outside the
>hull,
>with a supplementary system inside the hull?
>
>Warren.
>
>--- Jari Siikarla <jari.siikarla@vertex.fi> wrote:
> > At 12:32 30.4.2003 +1000, you wrote:
> > >but, back to the ridiculous and unreasonable -
> > could induction be used to
> > >pass a current thru the hull without the heat
> > buildup issues?
> >
> > Nothing ridiculous about that idea.
> > It is used all the time, but it is not the answer to
> > heat build up,
> > as it is less efficient method to pass current than
> > connectors,
> > so it produces more heat.
> >
> > But you can use it to power low power external
> > "thingies" like
> > "intelligent" termometers, pressuregauges etc.
> >
> > Jari Siikarla
> >
> >
>
>
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