Hi Bert,
What can you tell us about the "Tesla suitability" of the GA/Maxwell 35xxx series pulse capacitors? I have seen these come up on eBay from time to time but don't recall anyone bringing their use up in this forum.
David
On Tuesday, October 20, 2015 7:20 PM, Bert Hickman <bert@xxxxxxxxxxxxxxxxxxxxx> wrote:
Hi Tim,
Most of Maxwell's 31xxx series caps are only rated for 1 Pulse Per
Second (PPS). A few exceptions models 31393, 31662, 31677, 31687, 31892,
and 31981(all 100 PPS) and 31583(400 PPS). Maxwell's specs for the Model
31190 0.08 uF 100 kV cap (currently listed on eBay) show that the cap is
indeed only rated for 1 PPS.
Although not explicitly stated, the polymer film dielectric used in this
cap may be Mylar (PET) and not (the more desirable) Polypropylene. A
call to General Atomics Energy Products (the current owner of the old
Maxwell line of products) would be strongly advised before buying this
capacitor. If the cap uses Mylar, it may work for short run times in TC
use, but you'll need to be very careful not to overheat (and destroy)
it. There may be better choices, such as an MMC.
Best wishes,
Bert
--
Bert Hickman
Stoneridge Engineering, LLC
http://www.capturedlightning.com
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Tim Flood wrote:
> I need a .08uF, 60kV cap for a new PT powered TC. There is a pulse cap on
> Ebay, but rated at 100kV. Does anyone see any problems with the higher than
> needed voltage rating?
>
> Thank you,
>
> Tim Flood
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>
>
>
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