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

[paul swed]

Magnus
A rare occasion that I get to have an answer for you.
I have two sulzers also and the batteries 5 years ago were an issue.
I believe nimh batteries could be put in if you really need batteries. At
$35 I passed that option. Plus batteries are just a pain.
I think the issue you have is that without the batteries its filtering is
quite poor you need a larger filter cap 2200 uf at the very least. Its 21 V
as I recall. The system is indeed intended to charge nicads and so it
really is a current charger. But will run the oscillator with a cap.

Far wiser (Which I did not do) is to replace the guts with a regulator. A 3
terminal adjustable would be great plus a bit of heat sink. Though you
could use the actual assembly for that with a insulator.
By the way the can cap thats is in my units were bad.
Good luck great oscillators
Regards
Paul
WB8TSL


On Thu, Nov 1, 2012 at 4:51 PM, Magnus Danielson <magnus at rubidium.dyndns.org
> wrote:

> 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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