Re: [TCML] Polypropylene?

[Neon Tesla <neontesla@xxxxxxxxx>]

Yes I've heard the same explanation as John G.

On Tue, Dec 4, 2012 at 6:29 PM, John Paul Grippa <pupman@xxxxxxxxxxxx>wrote:

> I was under the impression that self-healing works as such.  When the
> capacitor fails, the metal film at the point of failure would burn back to
> a
> greater degree than the dielectric.  The prevents the layers of foil from
> shorting and destroying the capacitor.  The capacitor would still work with
> an ever so slightly less capacitance.
>
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
> Of Jim Lux
> Sent: Tuesday, December 04, 2012 1:19 PM
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Polypropylene?
>
> On 12/4/12 4:35 AM, Atomic wrote:
> > What about this whole self-healing thing? Any links on how does that
> works?
> >
>
>
> ACtually, it's not the dielectric that heals.  The capacitor is made from
> lots of little capacitors in parallel with what is essentially a "fuse" in
> series with each cap.  When the dielectric fails, the current causes the
> fuse to blow, removing the cap from the circuit.
>
> Maybe 10 years ago on the list there was a discussion of this.  There are
> some cool microphotos around of failed capacitors, etc.
>
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-- 
*Don't lower your expectations, raise the voltage !*
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