[time-nuts] Sulzer 5A & 5P PSU/battery question

paul swed paulswedb at gmail.com
Thu Nov 1 17:21:11 EDT 2012


Nimh is indeed the answer to replacing nicads but they are not inexpensive.
The other thing is that the energy densities have gone up over the years so
you can use a smaller footprint. But you have to check the charge rates.
Typically .1c for slow.

I have old nicads from HP that indeed still work pretty well after 30
years. The modern batteries will last 5. Could be lots of reasons. But
thats what I see. Whatever you do, don't buy nicads they are still sold.
Issue is they have been on the shelf for a long time and are a waste of
money.
Regards
Paul

On Thu, Nov 1, 2012 at 5:11 PM, Tom Knox <actast at hotmail.com> wrote:

>
> Hi Magnus;
> I have looked several times for an article that explains charging
> perimeters for the various types of batteries on the market.  So many freq
> standards have outdated battery technology. It would be nice to find an
> modern alternative battery that does not require much modification to the
> charge circuit.
> Best Wishes;
> Thomas Knox
>
>
>
> > Date: Thu, 1 Nov 2012 21:51:21 +0100
> > From: magnus at rubidium.dyndns.org
> > To: time-nuts at febo.com
> > Subject: [time-nuts] Sulzer 5A & 5P PSU/battery question
> >
> > Fellow time-nuts,
> >
> > Yesterday I picked up a Sulzer 5A + 5P without batteries. It is supposed
> > to have 21 D-cell NiCd batteries, but today those are not easy to come
> > by, so I wonder if I can either run the PSU safely without battery or if
> > I can swap in lead-batteries.
> >
> > I know that some of you have these, so I would value your input.
> >
> > I did try to run it a short time without batteries, but the 5 MHz output
> > did not work very well, so I turned it off.
> >
> > Cheers,
> > Magnus
> >
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