Hi
If you are running inside a facility with backup power, the couple of seconds
between lights out
and generators on is something that does need to be handled. If the frequency
standard cruises
through the event, it’s probably ok for the rest of the gear here and there to
restart. Waiting for
On 11/21/2015 6:13 AM, Bob Camp wrote:
Hi
The key issue is that there has been a lot learned about charging batteries
since the 5065A was designed. Just as other parts of the 5065 can be improved
with some work, so can the battery charger. Given that NiCad’s aren’t cheap,
it’s worth noting that
In message <77d0b0cc-a230-47d8-af0b-772aec876...@n1k.org>, Bob Camp writes:
>The key issue is that there has been a lot learned about charging batteries
>since the 5065A was designed.
While that is true, NiCd is almost the most robust battery chemistry out
there, so even with the rather
Hi
The 5065A has a nice connector on the back for an external DC supply Rather
than doing
anything inside the box, I’d do a battery pack outside the unit. If you have
multiple devices
you want to run on battery - do they also have DC inputs? If not can a DC input
be added
with minimal damage t
Hi
The key issue is that there has been a lot learned about charging batteries
since the 5065A was designed. Just as other parts of the 5065 can be improved
with some work, so can the battery charger. Given that NiCad’s aren’t cheap,
it’s worth noting that the circuit could be worked on *before* s
In message <5650469b.1040...@rubidium.dyndns.org>, Magnus Danielson writes:
>Lacking the charging controller in mine, what would be a good approach
>to go about and build one?
A Mascot lead-acid charger and two VRLAs :-)
>Need to replace the battery setup in my XSRM setup too, the pack
Hi,
Lacking the charging controller in mine, what would be a good approach
to go about and build one?
Need to replace the battery setup in my XSRM setup too, the packs I
installed is now dead.
Tempted to think in terms of LiFePO.
Cheers,
Magnus
On 11/21/2015 03:45 AM, Dan Rae wrote:
On 1
On 11/20/2015 4:54 PM, Bob Camp wrote:
Hi
I don’t in any way doubt your count. If indeed they are putting 21 cells into
that circuit,
the NiCads likely don’t last as long as they might with a different charging
circuit ….
Bob
Bob, I was answering Corby's query; mine had an original -hp- batt
ld like.
Thanks.
Joe
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp
Sent: Friday, November 20, 2015 6:54 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5065A battery pack
Hi
I don’t in any way doubt your co
Hi
I don’t in any way doubt your count. If indeed they are putting 21 cells into
that circuit,
the NiCads likely don’t last as long as they might with a different charging
circuit ….
Bob
> On Nov 20, 2015, at 3:56 PM, Dan Rae wrote:
>
> On 11/20/2015 10:52 AM, cdel...@juno.com wrote:
>> Any
On 11/20/2015 10:52 AM, cdel...@juno.com wrote:
Any one know how many cells went into the HP 5065A battery packs?
21 Corby, in three rows of seven, from my notes when I re-celled mine.
Dan
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Hi Corby:
You could guess if you know the nominal pack voltage (divide that by 1.2 Volts/cell) or if you know the interior
dimensions I might be able to see what fits.
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Hi
Well, the charger brings the stack up to about 33V (34.8V CR7 minus
1.4V in Q5 and Q4).
Since they are NiCad’s that sort of limits the choices in stack size.
Best bet (and a nice round sounding number) is 24 cells. That would
1.375V per cell which is just below the “standard” 1.41 V float vo
Any one know how many cells went into the HP 5065A battery packs?
Thanks,
Corby
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Hi
I have no problem with restoring gear to it's original state. I mostly was
wondering just how much time the considered "enough" back when the 5365 was
made. There's been a bit of drift in things like that over the years. Sounds
like in this case, not as much as in other areas.
Bob
On Dec 4
But thats not HP. :-)
I would agree that a external ups would be about the same price and for
some of them you can slightly increase the battery size. There are a lot of
surplus ones out there for a very few dollars. Shippings normally the
bigger cost these days.
Regards
Paul.
On Tue, Dec 4, 2012
Hi
So roughly what a simple UPS would give you.
Bob
On Dec 4, 2012, at 7:34 PM, Dan Rae wrote:
> On 12/4/2012 3:51 PM, Bob Camp wrote:
>> Hi
>>
>> How much backup time does that battery pack give you?
>>
>> Bob
>>
>>
> Bob, it's at least what they claim in the manual for that Option, somet
On 12/4/2012 3:51 PM, Bob Camp wrote:
Hi
How much backup time does that battery pack give you?
Bob
Bob, it's at least what they claim in the manual for that Option,
something like fifteen minutes from what I remember.
Dan
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Hi
How much backup time does that battery pack give you?
Bob
On Dec 4, 2012, at 6:47 PM, Dan Rae wrote:
> I've just finished fitting new cells into my 5065A battery pack. A bit of a
> struggle since it is quite a tight fit to re-use the original plastic
> container. For information, the on
I've just finished fitting new cells into my 5065A battery pack. A bit
of a struggle since it is quite a tight fit to re-use the original
plastic container. For information, the only cells I could find that
just about fit, and even then one has to remove the plastic covering
from them, were t
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