Re: [TCML] 1,000uF 250V pulse cap needed

[Bert Hickman <bert.hickman@xxxxxxxxxx>]

A bigger problem is that most photoflash caps are electrolytics and 
won't withstand the voltage reversals in Chris's tank cap application.

Bert

FIFTYGUY@xxxxxxx wrote:
>  
>  
> In a message dated 8/7/08 7:05:13 P.M. Eastern Daylight Time,  
> FIFTYGUY@xxxxxxx writes:
>
> > Howzabout photoflash caps?
>
>     Well, I poked around a little in the archives, and  it seems Terry Fritz 
> had looked at photoflash caps for his OLTC. He decided they  didn't/wouldn't 
> work.
>  
>     Anyhow, here's some CDE photoflash cap specs:
>  
> _http://www.cde.com/catalogs/7P-PF.pdf_ 
> (http://www.cde.com/catalogs/7P-PF.pdf) 
>  
>     They are only rated for 100,000 discharges (~15  minutes a 120 bps?), but 
> they are also only rated for one discharge every 30  seconds! And these are 
> supposed to be really nice photoflash caps!
>    
>     The suitable caps are "strobe" duty caps:
>  
> _http://www.cde.com/catalogs/ST.pdf_ (http://www.cde.com/catalogs/ST.pdf) 
>  
>     So there's normal "photoflash" caps, and special  "strobe" caps. The CDE 
> "ST" strobes are rated at 10 million flashes, 1 per  second. The strobes are 
> about 3 times the can volume for the same voltage and  capacitance rating of 
> the plain "flash" units.
>  
> -Phil LaBudde
>
> Center for the Advanced Study of Ballistic  Improbabilities

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