Re: physical remarks (Was: Looking for thin, metal tape for shielding)

["Michael Pender" <mpender@hotmail.com>]

Achim Hensel <achim.hensel@ruhr-uni-bochum.de> wrote in message
20030710144959.6dc33636.achim.hensel@ruhr-uni-bochum.de">news:20030710144959.6dc33636.achim.hensel@ruhr-uni-bochum.de...
> Hai, Folks..
>
>> I had to take apart my SGI 1600SW flatscreen monitor to clean it out
>
> This is a flatscreen; no huge voltages, no electrobeams.

You're right -- my bad. :-)

>> I think the *opposite* is true because you would essentially form a
>> huge metal-oxide-metal (MOM) transistor, i.e.:
>
> This will work as a transistor, This is just a capacity. The
> transistor would need an other/third contact to modify the electric
> properties of the intermediate layer (I also do doubt if a
> metal-insulator-metal structure with that insulator matter and
> thickness can fuction as a transistor).

You can call it a transistor, or a diode, or a non-linear junction--the
effect is the same either way.

> Indeed a non-linear device (non-linear reaction to voltage) can
> transduce a signal to different frequencies. But a capacity is, in this
> regard, just a linear device. It might react different to various
> frequencies, but it's reaction is proportional to the voltage (and
> signal), so no other frequencies can be produced.

The metals will oxidize over time (days or weeks, not months) creating an
oxide layer between the metal surfaces.  The device formed is *not* a mere
capacitor.

> Tape with a conductive layer should seal the flatscreen to electronic
> immissions and emissions. I really doubt, if high voltages are produced,
> so that should be no problem.

Since its just a flatscreen (and I'm expressly presuming an LCD or similar
this time, not a CRT with a relatively flat front) my concerns about the
electron beam sweep and high voltage were misplaced.

> If you really need connecting the metal tape layer to the metal base use
> [well, I don't know the english word for it; in german it's
> "Leitsilber". It's a conducting liquid which will dry and then form an
> electric connection; maybe it's called "conduction silver paint" or
> "Colloidal silver"].

Do you know where I can get some?  I've had a difficult time locating any
sources for it.

Thanks,

Mike