Thanks!?will
?? All Neon
tranformer there has been replaced by Switching power supply.Old
transformer
?isn't?easy to get now.?There is
another important reason,I often ?purchase? NOS tubes,
so,
?it needs battery operated.
? 73! Hsu
?
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----- Original Message -----
Sent: Thursday, October 05, 2006 7:06
AM
Subject: [ham_amplifiers] Re: Hi-pot
tester
Hsu,
Most of the smaller commercial ones at around 4-5 kV use a neon
sign transformer. Those are not that heavy, nor big either.
It's
according to what you have available there, but any sign
company
can get you a used transformer cheap. You may have to use a
doubler
or tripler, it's according to the output voltage of the
transformer.
These are pretty low current, maybe 5 mA or so. It doesn't
take
much.
Best,
Will
--- In ham_amplifiers@yahoogroups.com,
"Hsu" <Jbenson@...> wrote:
>
> I want to build an
Hi-pot tester, I have seen some design, Rich's
and W6CW,But I do not want
use ac transformer.
> it is two heavy and need AC main power.I have some
junk B/W and
Clour TV FBT, I think if I can be use in this project.
> I have a quertion, How much current the hi-pot tester should
supply?The another function of tester is burning of the "junk" between
two electrode,it needs more current.
> 73!
Hsu
>
