[TCML] Resonance Research Caps
bert.hickman at aquila.net
Mon Feb 6 08:11:08 MST 2012
There's nothing inherently wrong with using dry film capacitor
technology as long as the voltage (stress within each capacitor element)
is kept below corona inception along plate boundaries. By using clever
series-connected interdigitated structures, modern single-winding
metalized self-healing PP film caps have been made with operating
voltages of over 8 kV/unit. Stacking batched of these in series allows
construction of HV dry-film pulse caps of virtually any voltage. As long
as the internal voltage and thermal stress per capacitor is not
exceeded, the unit should have comparable reliability as oil-immersed
counterparts, and the technology is conceptually no different than
making MMC caps from individual dry-film PP snubber caps.
The key is that the design and manufacturing of the cap must be
supported by a reputable manufacturing source. The pulse cap (and
certainly the internal capacitor modules) must be made by a respected
capacitor vendor such as CD, GAES, Aerovox, Plastic Capacitors, etc. The
specific details of the capacitor sources and construction should be
provided by Resonance Research before purchase, along with clear
warranty protection by the original manufacturer to you, the end user.
Phil Tuck wrote:
> I have had several private replies on people's dealings with the individual
> concerned for which I am grateful, but the inquiry is more of a case of
> finding out what people think of the caps themselves, and particularly the
> lack of an oil as the dielectric.
> My friend has one that has worked well so far, but the lack of oil still
> always leaves a certain doubt in our minds.
> I don't think either of us would be willing to deal with him again.
> Regards Philip Tuck
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