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 chang
CTED]>
Cc: 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-tak
-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
;>> 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.
>
ng 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)
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
e' <[EMAIL PROTECTED]>
>Cc: 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!
ginal Message-
> 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 abou
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: http://home.comcast.net/~ad5x/
The little MFJ switcher is not much bigger, has more current capacity
and is cheaper. I have used a couple of them and they seem to be quiet.
No connection to MFJ...etc
K4TO
Steve Jackson wrote:
I've never seen one before, but I am curious ...
http://www.gigaparts.com/parts/profile.php?sku=z
Don is right. This is a low duty cycle power supply. For just a few
dollars more ($149), you can find brand a new Astron RS-35A which is
rated at 35 amps ICS. They _will_ take a key down for a long time
without problems. Astron also has a slightly smaller supply (RS-20A,
20 amps) that sells
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 h
Steve KZ1X/4 wrote:
I've never seen one before, but I am curious ...
http://www.gigaparts.com/parts/profile.php?sku=zgr-hsp-1a
---
Never heard of a power supply rated at "22 Amps @ .25 duty/sec."
".25 duty/sec"?? Is that 22 amps for 1/4 of a second?
The normal ratings us
13 matches
Mail list logo
