[time-nuts] Fwd: QL-E0pfx7I3.pdf

[Peter Bell]

Thank you Gerald - it does look very similar - the only obvious
difference is that the FE-5680A has an LM2941 subregulator on the lamp
supply that does not appear to be in the 5650 - hopefully I won't have
to remove the lamp, since it sounds (and looks) like a rather fiddly
job.  On both these units, the photocell signal is good if you put the
working Rb absorption cell into them, so I think the lamps are
probably OK.

I tired reheating the absorption cell to get the Rb back into the
nipple, but it doesn't seem to have made any difference - still no
lock...

Regards,

Pete


On Mon, Oct 31, 2011 at 9:56 PM, Gerald Molenkamp <geraldm at commtelns.com> wrote:
> Hi All,
>
> I wonder if the 5650a physics package is nearly identical to the 5680. Below is the schematic of a 5650a.
>
> Hope this helps.
>
> By the way, removing the lamp is a difficult task, picking at the Silicone one bit at the time is the only way to remove it safely.
>
> It easy after some practice and time over a mag lamp.
>
> Regards
>
> Gerald
>
> VK3GJM
>
>>
>>
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>
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