Re: [volt-nuts] Good powersupply: HP6626A
If its tested and working, For $400 each, its a steal for a precision
programmable supply.
http://www.home.agilent.com/agilent/product.jspx?nid=-35489.384183.00&lc=eng&cc=US
$18,000 if new.
OTAH, compare the DC specs and uV resolution, the Power Designs
precision supplies are competitive, but no progammability or GPIB,
but usually eBay priced between $30-100.
At 10:01 AM 4/25/2012, Pete Lancashire wrote:
sadly if in the US you need to add $200 for shipping
On Apr 25, 2012 5:27 AM, "Poul-Henning Kamp" phk@phk.freebsd.dk wrote:
Speaking of good powersupplies...
I just noticed that a seller from Singapore has 5pc HP6626A
on eBay at $200 Buy it Now.
I have had a 6626A for some years, and apart from the lack of
something you can twist on the frontpanel, it is the best power-supply
I've ever worked with.
Highly recommended.
Sincerely,
Marv Gozum
Philadelphia, PA
In message 6.2.5.6.2.20120425112335.046d4638@jefferson.edu, "Marvin E. Gozum" writes:
If its tested and working, For $400 each, its a steal for a precision
programmable supply.
... which has four independent & floating outputs with remote sensing.
Yes, there is a lot in that box.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
Put another way, that would make it $100 for each independent supply,
that's a very good price in line with the high end estimate of each
Power Designs, plus the added features of the HP.
A key would be truly in what shape the supply is in and how much life
is left. Which leads to how self serviceable it can be, planning
worse case. At $400, and if new $18k, I estimate a factory service
would be close to at least purchase cost. The Power Designs lack the
conveniences, but the basic specs are competitive while being easier
to self service. Buying several single units would spread the risk
of uncertain performance and longevity over many units.
At 11:54 AM 4/25/2012, Poul-Henning Kamp wrote:
In message 6.2.5.6.2.20120425112335.046d4638@jefferson.edu,
"Marvin E. Gozum" writes:
If its tested and working, For $400 each, its a steal for a precision
programmable supply.
... which has four independent & floating outputs with remote sensing.
Yes, there is a lot in that box.
Sincerely,
Marv Gozum
Philadelphia, PA
In message 6.2.5.6.2.20120425120935.04a0ebf0@jefferson.edu, "Marvin E. Gozum" writes:
The Power Designs [...]
Just to clarify: I'm not pitting the HP against the Power Designs
or any other brand, make or model of PSU, I'm pointing out what I
think is a damn good bargain on eBay.
If you're not interested, move on...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
Poul-Henning
I have an Agilent 6642A, which has both voltage and current control knobs at
the front, plus digital - - - this is a very nice PSU - - - Agilent/HP are
still the tops, but as for new prices !! And for the older models, the
HP6114A Precision PSU is a nice unit.
Roy
-----Original Message-----
From: Poul-Henning Kamp
Sent: Wednesday, April 25, 2012 5:41 PM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Good powersupply: HP6626A
In message 6.2.5.6.2.20120425120935.04a0ebf0@jefferson.edu, "Marvin E.
Gozum" writes:
The Power Designs [...]
Just to clarify: I'm not pitting the HP against the Power Designs
or any other brand, make or model of PSU, I'm pointing out what I
think is a damn good bargain on eBay.
If you're not interested, move on...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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Hi Poul, neither was I, sorry, that was not my intent. As
explanation, since these 2 supplies were discussed back to back, and
they represent extreme ends of pricing, age, active production ...
seemed opportune to contrast the category of "precision" supply for
discussion sake and the readers, not just us both.
On a side note, Only 3 of the units remain since the discussion
began, was the thread instrumental?
At 12:41 PM 4/25/2012, Poul-Henning Kamp wrote:
In message 6.2.5.6.2.20120425120935.04a0ebf0@jefferson.edu,
"Marvin E. Gozum" writes:
The Power Designs [...]
Just to clarify: I'm not pitting the HP against the Power Designs
or any other brand, make or model of PSU, I'm pointing out what I
think is a damn good bargain on eBay.
If you're not interested, move on...
Sincerely,
Marv Gozum
Philadelphia, PA
Yes, I bought one, thanks for the pointer...
"Marvin E. Gozum" marvin.gozum@jefferson.edu writes:
Hi Poul, neither was I, sorry, that was not my intent. As explanation,
since these 2 supplies were discussed back to back, and they represent
extreme ends of pricing, age, active production ... seemed opportune
to contrast the category of "precision" supply for discussion sake and
the readers, not just us both.
On a side note, Only 3 of the units remain since the discussion began,
was the thread instrumental?
At 12:41 PM 4/25/2012, Poul-Henning Kamp wrote:
In message 6.2.5.6.2.20120425120935.04a0ebf0@jefferson.edu,
"Marvin E. Gozum" writes:
The Power Designs [...]
Just to clarify: I'm not pitting the HP against the Power Designs
or any other brand, make or model of PSU, I'm pointing out what I
think is a damn good bargain on eBay.
If you're not interested, move on...
Sincerely,
Marv Gozum
Philadelphia, PA
--
John Devereux
In message 6.2.5.6.2.20120426084304.04a121c0@jefferson.edu, "Marvin E. Gozum"
writes:
On a side note, Only 3 of the units remain since the discussion
began, was the thread instrumental?
I have no idea, I'm not affiliated with the seller in any way.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.