[time-nuts] FTS-4040/A - Looking for voltage on switching power supply

[paul swed]

I will believe if its the supply going to the inverter, the inverter is
flexible. Most offer a fairly wide range on the input. So 24-28 is most
likely very reasonable.
But continue to research and just maybe you will find better detail.
Pictures may also be helpful.
?? Is it a linear supply feeding the inverter?? That would make sense.
Regards
Paul.

On Sun, Mar 17, 2019 at 5:19 PM Taka Kamiya <tkamiya9 at yahoo.com> wrote:

> Now it is certain the failure is power supply.  I fed 26V into DC port and
> everything is working as before.  I'd rather replace this faulty supply.
> Question is, 24V?  28V?  30V?  or 28.45V?  This power supply appears to be
> a custom unit.  Still looking for spec on power supply.
>
> At least it's not the cesium tube.... phew!
>
> ---------------------------------------
> (Mr.) Taka Kamiya
> I'm stuck in a wormhole....  Hello, worms!
>
>
> On Sunday, March 17, 2019, 3:59:57 PM EDT, paul swed <paulswedb at gmail.com>
> wrote:
>
>
> Taka
> No familiarity with 4040 and I don't have schematics.
> But thats not unusual for a lot of time-nuts equipment.
> But happy to give a remote hand. (Travelling this coming week so slow
> responses)
> Others may have more useful details like a schematic.
> Regards
> Paul
> WB8TSL
>
>
> On Sun, Mar 17, 2019 at 3:02 PM Taka Kamiya via time-nuts <
> time-nuts at lists.febo.com> wrote:
>
> I have an FTS-4040/A Cesium Oscillator from Datum.  It was working last
> night and dead today.  A/C available LED is lit but nothing else.  Checking
> power supply, I read 8.9V.  (large switching supply on back panel)  Rather
> odd voltage I thought.  Checked some ICs on a board.  It's not getting
> power.
>
> Does anyone have this unit or know what this switching supply is supposed
> to output?  It is a single voltage supply.
>
> ---------------------------------------
> (Mr.) Taka Kamiya
> I'm stuck in a wormhole....  Hello, worms!
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