[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Exploding Maxwell caps (fwd)



---------- Forwarded message ----------
Date: Thu, 16 Aug 2007 12:19:11 -0800
From: Greg Leyh <lod@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Exploding Maxwell caps (fwd)

A Q value of 20000 seems incredibly optimistic.   GL


Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Wed, 15 Aug 2007 22:46:23 -0500
> From: resonance <resonance@xxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Exploding Maxwell caps
>
>
>
> I don't use them, but a few people on the list, in years past, have reported 
> problems with them.  As Scott pointed out, the voltage reversal will kill 
> them.  You need a Maxwell rated for 100% reversal.
>
> We make our own now, conservatively rated at 80 kV DC with a Q factor 
> greater than 20,000.  60 nF and 100 nF sizes available.
>
>
>
> Dr. Resonance
>
> Resonance Research Corp.
> www.resonanceresearch.com
>
>
> ----- Original Message ----- 
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Wednesday, August 15, 2007 3:38 PM
> Subject: Re: first post (fwd)
>
>
>   
>> ---------- Forwarded message ----------
>> Date: Wed, 15 Aug 2007 22:09:55 +0200
>> From: Finn Hammer <f-h@xxxx>
>> To: Tesla list <tesla@xxxxxxxxxx>
>> Subject: Re: first post (fwd)
>>
>> Within the first month of operation, the Museum Coil blew it`s MMC and I
>> had to improvise, to keep the coil running until I got the real thing
>> from Maxwell.
>> http://home5.inet.tele.dk/f-hammer/tesla/tesla.htm
>>
>> The solution was to use 4pcs. of Maxwell 37667  caps in a
>> series/parallel configuration.
>>
>> The coil is powered by a 20kV transformer, and the peak charging voltage
>> is 28kV.
>> It is running at 300BPS.
>>
>> The caps were running 5+ shows a day, 10-20min. each for a month, and
>> the caps never got even remotely warm, and are still kept as backup.
>>
>> Under which circumstances did you explode your samples, Dr.?
>>
>> Cheers, Finn Hammer
>>
>> Tesla list skrev:
>>
>>     
>>> These Maxwell caps on E-bay are only rated for 1-5 pps and will usually
>>> explode if operated at 120 or more pps.
>>>
>>> They will work but only for very short runs.
>>>
>>>
>>>
>>> Dr. Resonance
>>>
>>> Resonance Research Corp.
>>> www.resonanceresearch.com
>>>       
>>
>>
>>