I'm interested in this thread because I need a HV probe (upto 6 KV will
be enough for me, I have seen a Fluke one, but here it's expensive), and
the possibility to build one myself interest me. I know many of these
have a large (long) resistor inside, also into a vacuum chamber for long
term stability. Which resistor (string of, I suppose, not a single one)
could be recommended to build a reasonably accurate, 10:1 probe?. My
main concern is regarding this resistor reliability along time. I plan
to use it attached to a 10 Meg input DVM, I also own an analog AVOmeter
(model 20, 20000ohms/volt) but the readings will be different.
Any help will be appreciated, thanks in advance.
Best regards
Guillermo - LU8EYW.
R.Measures escribió:
On Jul 12, 2004, at 7:17 PM, Lane Zeitler wrote:
"Loaned" my commercial high voltage probe to a "friend" and have not
seen it in six months, the "friend" claims he does not have it. Need
to homebrew a HV probe, can I use Schedule 20 or 40 pvc?
• Yes
Will it handle the E (4 kvdc). I guess I could hi pot test it. Any
info appreciated.
• PVC is good with DC. With RF, sometimes it works and sometimes it
melts. The best RF plastic in a plumbing emporium is ABS.
cheers, Lane. Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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