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Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
Hi all, I am buying the parts for my first DRSSTC and I found a cap for sell here.
Its a Epcos B32686S7334-504 Its 1250VDC 330nF Ims at 100Khz is 10A ESR at 100Khz is 5 mOhms
Here its costs R$20 ( US$12,5), its not cheap but its the best cap that I can found. Its a good cap for a DRSSTC Primary Bank? I will need 100nF to ressoate with my primary, so I need three of it in series. Thanks!
Registered Member #146
Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
What is the expected power level of the system? One string of capacitors may not handle the RMS current too well, and it could overheat. Those capacitors seem extremely over-priced for their specifications, and would only cost a few dollars each in the US.
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I think the caps here are too expensive.
I plan to make a 600 or 1000W DRSSTC, but I will use the IRG4PC50 IGBT's (are not too expensive here, its R$30 or US$18,75, the taxes at import are too high to get it with lower prices), and I will make a fullbridge. I dont know what cap to use it, I think we have much caps that I can use, but I dont know any model ( I will try to se the prices of the 4hv Wiki caps here)
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I think its better to say how much long sparks I want, I was made a SSTC with 20cm sparks, some 1m sparks in a DRSSTC its good, I dont know how much power a DRSSTC need to do that.
Here I have some bunch of Siemens 400V 1uF MKT-10 Caps, Metalized Polyester Film. If I get many of these in series and parallel I can use it?
Registered Member #538
Joined: Sun Feb 18 2007, 08:33PM
Location: Finland
Posts: 181
Mestre Racerxdl wrote ...
I think its better to say how much long sparks I want, I was made a SSTC with 20cm sparks, some 1m sparks in a DRSSTC its good, I dont know how much power a DRSSTC need to do that.
Here I have some bunch of Siemens 400V 1uF MKT-10 Caps, Metalized Polyester Film. If I get many of these in series and parallel I can use it?
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
But If I use some Polypropilene Film Foil but small ones, like some common that I have here (1600V 10nF, with 10 in parallel I get my 100nF and It will cost one R$8 or US$5)
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DRSSTC: Capacitor
