Re: Hv probe for lifter project (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 22 Oct 2004 13:37:31 -0400
From: Jack Vandam <snotoir7674g@xxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Hv probe for lifter project (fwd)


----- Original Message -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
Sent: Friday, October 22, 2004 12:46 AM
Subject: Hv probe for lifter project (fwd)


> Original poster: <sroys@xxxxxxxxxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Thu, 21 Oct 2004 19:45:59 -0500
> From: Adam Britt <Beans45601@xxxxxxxxx>
> To: hvlist@xxxxxxxxxx
> Subject: Hv probe for lifter project
>
> In regards to my last post about my lifter project, i am getting a
> large flyback from Dr. Res and a tripler, so i am set for power
> supplies. But, Now i am going to need a HV probe. I have a 10' x.5"
> piece of PVC pipe around my house, and if i put a bolt in one end, and
> one in the other, and fill it with water, will that be enough
> resistance for a HV probe? If not, what other liquid (that is commonly
> available) could i use to give me enough resistance?
>
> Thanks
> -Adam
>

The water idea is good if you want to keep the thing from arcing to ground
directly as it will save the components.  However, for accuracy, you'll need
to solder resistors together or obtain one large resistor.  Here is a link
for a homemade probe:

http://www.kronjaeger.com/hv-old/hv/equ/measure/index.html

I made this a few years ago.  Soldered the resistors together, placed into a
pvc tube, filled with mineral oil and sealed.  Works good, but I later
picked up a nice, used commercial hv probe that is a lot more convenient to
use.

Jack