Re: Help needed with voltage divider

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Marco,

You may have to pull a vacuum on the water or boil it to drive out as much 
dissolved gas as possible.  It is possible gas trapped in the walls of the 
tubing is also getting into the water over time.  I would heat it to say 
50C and see if a bunch of gas shows up.  If you bleed off the air at 50C 
and seal it again, any little gas left should just dissolve into the gas 
starved fluid.

This is what "I think" but I don't "know" for sure.

Cheers,

         Terry


At 01:52 AM 7/27/2004, you wrote:
>Hello all,
>
>I am also proceeding with my water voltage divider roughly described at
>
>http://www.iki.fi/dncmrc/work/hv_divider.htm
>
>My sealed distilled water column gives a 1:60 division ratio and a
>second (compensated) stage at the bottom of it a 1:10 ratio, for a total
>of about 1:600 ratio. The first stage resistance is about 1.2 Megaohms.
>On the column top I have two copper pipes (6 mm o.d.) I used to pump
>water in and air out. I used an old refrigerator pump to extract all the
>air I could from the water. Then I sealed (soldered) the pipe tops. The
>pipe tops and the bottom networks remain both enclosed inside two
>rounded aluminium caps. Just a shielded cable going out of the ground
>(bottom) terminal.
>
>After two weeks from the sealing air bubbles started again forming
>inside the (plexi) tube. I am pretty sure I have no leaks. There are
>also no sediments inside. The water is still clear. So, what's going on?
>How pros do to get read of the air dissolved in the water?
>
>Anybody who can help me with this?
>
>Regards