Re: [TCML] plastic cap

[resonance@xxxxxxxxxxxx]

In my opinion Maxwell, CSI, and PCI all make really go caps for Tesla
oscillators, ie, with 100% voltage reversal capabilities.

I know the senior engineers and owners of each of these companies as they
are all really sharp on the subject of HV capacitor design.

Dr. Resonance




> Hi DC,
>
> That's even better, then. 25 kVAC would be good for 75 kVDC, not
> 57 kVDC. I didn't realize that PCI caps were the "Cadiallac" of high
> voltage capacitors. That makes me feel even better about my 0.1 uFd,
> 25 kVAC PCI pulse cap, as at 35 lbs., it is obviously a hause ;^))
>
> David Rieben
>
>
> ----- Original Message -----
> From: <resonance@xxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Thursday, January 17, 2008 10:20 AM
> Subject: Re: [TCML] plastic cap
>
>
>>
>>
>>
>>
>> All PCI caps are rated at 3.0 x Erms value.  This info directly from the
>> Pres and Sr. Engr.
>>
>> Dr. Resonance
>>
>>
>>
>>
>>> Hi Marko,
>>>
>>> I realize Plastic Capacitors of Chicago, Inc. has a pretty
>>> big line of high voltage capacitors. A quick view of their
>>> products page at: http://plasticcapacitors.com/product_index.html
>>> reveals that the "BNZ" series are obviously the most de-
>>> sirable capacitors for Tesla service. It appears this series
>>> is only built in small runs according to customer specifica-
>>> tions, though. I'm sure a few of the other mass produced
>>> varieties with the proper voltage/capacitance rating would
>>> probably still work, though.
>>>
>>> I have been fortunate enough to come across an unused
>>> Plastic Capacitors BNZ 2500-104 unit that's rated at
>>> 0.1 uFd, at 25 kV(AC) at 60 hz, not "DC". From what
>>> I've gathered, it appears that you can determine a 60 hz AC
>>> rated capacitor's DC voltage rating by multiplying the AC
>>> voltage rating by about 2.3. Most of the motor run or snub-
>>> ber caps that have a dual AC/DC (not the Australian rock
>>> band) voltage rating will seem to depict this - i.e. 440 VAC
>>> or 1000 VDC, 660 VAC or 1500 VDC. That would depict
>>> an equivalent DC rating of my "BNZ" cap at nearly 57 kV
>>> (DC).
>>>
>>> As a side note, a quick view of Plastic Capacitors' home
>>> page, http://plasticcapacitors.com/, also reveals that they
>>> actually have a "Tesla coil capacitors" icon, although this
>>> icon appears to be inactive.
>>>
>>> David Rieben
>
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>


Dr. Resonance

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