Re: [TCML] Voltage - Gap

[Terry L <terry@xxxxxxxxxx>]

I have run Maxwell Laboratories model 37093 high voltage pulse 
capacitors for years with no ill effects.  They are rated at 45 kV, 
.02uF and I use them in a 15kV system.  My Maxwells are not directly 
under my primary however.  I have run for over 30 minutes continuous 
with no problems in a approx. 3KW system (line - 120V@ 26Amp).  Love 
these Maxwells for both rotary synch gaps and static spark gaps.  I 
always thought the 35kV Maxwells were to low a voltage rating for 15kV 
systems even if they were higher pulse rate.

Also, as I understand it, these capacitors have a lifetime limit on the 
number of total discharges.  So far no problems after many years.  I run 
mine in a horizontal configuration although I am not sure if that 
matter.  An air bubble inside many of these units, swashing sound when 
moved, does not seem to be a problem.

Terry Leonard

On 2/3/2012 9:43 AM, Joe Mastroianni wrote:
> Oops wrong pic
>
> THIS one is the 37667, for your viewing enjoyment.
>
> <http://www.flickr.com/photos/iceowl/5812073757/in/photostream/>
>
> Joe
>
> On Feb 3, 2012, at 8:23 AM, Joe Mastroianni wrote:
>
> > Here's another picture of my stupidity.
> > This is a 37667 all blowed up during my trying to get my first DR coil working.   This one, I think I can safely say, died due to overcurrent/switching.
> >
> > http://www.flickr.com/photos/iceowl/5437138473/in/photostream
> >
> > After seeing Dave Leddon's DR, I decided I might be better off emulating someone who actually knew what he was doing, and switched to using banks of those Aerovox RBPS snubber caps.
> > http://www.ebay.com/itm/Aerovox-RBPS-IGBT-Snubber-Capacitors-2-0UF-1000VDC-/350362896880?pt=BI_Control_Systems_PLCs&hash=item51934189f0
> >
> > Never had a problem with those at any power input level I could muster ...
> >
> > Cheers,
> > Joe
> >
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