[Elecraft] potentially interesting (sorry, bad pun)

Bob Nielsen nielsen at oz.net
Fri Mar 24 20:58:53 EST 2006


I remember in my high school physics class (1955) the instructor (ex- 
W7TSZ) told us that it might be possible to build a ONE farad  
capacitor, but it would be as big as the classroom.  Times have  
really changed!

73,
Bob, N7XY

On Mar 24, 2006, at 3:45 PM, Kevin Rock wrote:

> In one of my trade magazines I recently read of a 3000 F  
> capacitor.  Yes, kiloFarads.  Interesting things are happening in  
> the super capacitor field.
>      Kevin.  KD5ONS
>
> -----Original Message-----
>> From: Steve <shlawrence at earthlink.net>
>> Sent: Mar 24, 2006 5:19 PM
>> To: 'Phil Kane' <k2asp at arrl.net>
>> Cc: elecraft at mailman.qth.net
>> Subject: RE: [Elecraft] potentially interesting (sorry, bad pun)
>>
>>
>> No, I wrote correctly.  25 FARADS.
>>
>> But, this is SMALL in comparison.  Elna offers 600F @ 2.5V.  About  
>> 5" long x
>> 1.5" diameter!
>>
>> YES, 600 Farads.  I kid you not.  I did a double-take on this  
>> one.  Really!
>>
>>
>> See:   http://www.elna.co.jp/en/ct/pdf/DPe.pdf
>>
>> 73,
>> Steve
>> aa8af
>>
>>
>>> -----Original Message-----
>>> From: Phil Kane [mailto:k2asp at arrl.net]
>>> Sent: Thursday, March 23, 2006 11:19 PM
>>> To: Steve
>>> Subject: RE: [Elecraft] potentially interesting (sorry, bad pun)
>>>
>>>   Do you mean 25 uF?  A 25 Farad capacitor would be about the  
>>> size of
>>>   a beer barrel!!!
>>
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