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Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Hi Guys!
This is just a quick question, for I know many of us still finding alternative parts for expensive primary capacitors... Anyone have any idea/experience trying to alter the polypropelene capacitors from Cornell Dubilier, G.E., etc, More like of a hand made capacitors for DRSSTC application probably 10kV, 1KAmps on the primary.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
You can try the following. These are a popular MMC capacitor used in a lot of coils. I know lots of people that use them with success. However, since the capacitance isn't too high, they are usually limited to smaller spark gap and DRSSTC coils unless you plan to use a bazillion of them.
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Ebay has giant Eurofarad snubbers for dirt-cheap - the last time I bought these I paid $120 for 20. They're good to about 1KV, and will happily handle all the current you can throw at them. The drawback is their capacitance is a bit high, so they only work for very large coils.
Registered Member #3900
Joined: Thu May 19 2011, 08:28PM
Location:
Posts: 600
Dr. ISOTOP wrote ...
Ebay has giant Eurofarad snubbers for dirt-cheap - the last time I bought these I paid $120 for 20. They're good to about 1KV, and will happily handle all the current you can throw at them. The drawback is their capacitance is a bit high, so they only work for very large coils.
you can also string them up for reduced capacitance and increased voltage and current ratings. making them even more indestructible.
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
how do we rate the V/us? For what are these data?? And, how will I relate the current that will flow in it from the IGBT (e.g. 1KA) Is there a standard rule of thumb in here? Thanks
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Primary Tank Capacitor Alternatives
