Re: Triggered gap tip

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ludev-at-videotron.ca>

Hi Terry,

Many time they used an electrolytic cap in a back to back
configuration in the same can; even worst than a paper/oil cap.

Cheers,

Luc Benard 

Tesla list wrote:
> 
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> 
> Hi J.B.,
> 
> If you used a motor "start" cap, they are not made for anything but very
> short term occasional use.  They have very high loss (paper/oil) and thier
> construction is based on "cheap".  Get extras :-)
> 
> A motor "run" cap is made for continuous placement across the AC line
> drawing lots of current.  They will not fail (poly oil).  Although they are
> very expensive, used and surplus ones go for a few dollars.  At this value
> (~2uf) there are solid poly caps that would work fine too for ~$5 from like
> DigiKey.
> 
> 1uF     P10943-ND
> 2uF     P10944-ND
> 3uF     P10945-ND
> 
> Data sheet at:
> http://www.maco.panasonic.co.jp/www-data/pdf/ABD0000/ABD0000CE35.pdf
> 
> Of course, buying them in quantites of "one" is sort of rough, so shop
> around at the surplus places first...  But Digikey will FED-EX them "same
> day" if you really want one bad :-)))
> 
> Cheers,
> 
>         Terry
> 
> At 09:09 PM 10/14/2001 +0100, you wrote:
> >
> >Terry, Marc, & coilers,
> >
> >I managed to blow the motor start cap I'd been using in conjunction
> >with the GM HEIC on my triggered gap.  These caps are built to fail
> >open circuit, which it did.  As a preventative measure, I put a MOV
> >across the replacement cap terminals and so far, so good.  Others
> >running the STSG setup might want to consider doing likewise and
> >save themselves a blown cap.
> >
> >
> >73, Weazle, VE3EAR/VE3WZL
> >
> >Listening: 147.030+ and 442.075+
> >E-mail:    weazle-at-hurontel.on.ca
> >           or ve3ear-at-rac.ca
> >Web site:  http://www.hurontel.on.ca/~weazle
> >