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From: Phil Kane [mailto:[EMAIL PROTECTED]
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
: elecraft@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
Steve wrote:
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
Hmmm ... I wonder what the
in
the super capacitor field.
Kevin. KD5ONS
-Original Message-
From: Steve [EMAIL PROTECTED]
Sent: Mar 24, 2006 5:19 PM
To: 'Phil Kane' [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Subject: RE: [Elecraft] potentially interesting (sorry, bad pun)
No, I wrote correctly. 25 FARADS
-Forwarded Message-
From: Kevin Rock [EMAIL PROTECTED]
Sent: Mar 24, 2006 7:09 PM
To: Jack Brindle [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] potentially interesting (sorry, bad pun)
But, much like the muzzle of a firearm, you do not want to be close when
@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
On Fri, 24 Mar 2006 17:58:53 -0800, Bob Nielsen wrote:
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!
The materials have changed
Steve,
This supply was recently discussed on HFPack. According to a review by
Phil, AD5X, the Gamma Research HPS-1a supply contains a string of 25F caps
in the output to supply the peak current demand.
Look here: http://www.gammaresearch.net/
And the review here:
Steve,
It looks like 'specsmanship' to me - I looked hard at the 5 amps continuous
rating and then looked at the high current duty cycle specified and
concluded that it will not support a continuous string of dots no matter how
you slice it. Duty cycle/sec is a unit of measure that I have never
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