Paul,
-
I did not make a formal record of my measurements, but
I measured the mentioned Kilovac and similar Jennings
relays with similar results similar to Rich's.
-
The contacts were made fast enough, the issue was
the settling time "bounce". I was trying various
speedup circuits. I use some very nice LeCroy and
Tektronix Scopes.
-
Since I was only pulsing hv, I went with apt fets
after the relays proved to be slower than my
needs.
-
cheers
skipp
-
--------- Forwarded message ----------
From: "PAUL HEWITT" <wd7s@att.net>
To: "rm1" <r@somis.org>, "AMPS" <amps@contesting.com>
To: <amps@contesting.com>
Date: Tue, 12 Aug 2003 12:42:41 -0700
-
I think if I had a relay that
closed at 5.9ms sitting on my
bench, I certainly would not
guarantee it to close at 6ms
during 10G's of 55-2000hz
vibration, (Kilovac specs).
This is a MIL-SPEC item and no
manufacturer would claim a max
closure speed without some
sort of safety margin, lives
could at stake. Most relay
manufacturers today are
listing max closure time and
mean closure time, usually
50-65% less time for the mean.
I've spoken to several hams
that have found the exact same
results as I have. Since you
are the only person (I know
of) that has found these long
closure times, I suggest that
your data is out of date or
corrupt.
Cheers, Paul
PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net
Rich sez
>
> The rated closure
> time for the
> Kilovac® HC-1 is
> 6mS. I measured c. 5.9mS
> without a speedup
> circuit. If the
> actual closure
> speed was 2.3mS, one
> would think that
> Kilovac would spec
> the HC-1 at 2.5mS
> instead of 6mS.
________________________________________________________________
The best thing to hit the internet in years - Juno SpeedBand!
Surf the web up to FIVE TIMES FASTER!
Only $14.95/ month - visit www.juno.com to sign up today!
|