[time-nuts] WWVB remodulator for the Spectracom 8170...

[paul swed]

Hello to the group
Very good thread. I am recovering from a severe flu. Thats wgy I have not
been around.
This will be brief.
1Hz off seems to cause an issue.
The 60 khz xtals from mouser all seem to always be low.
So by lowering the drive and I assume loading. The 20K resistor they come
into range.
Don't like this and ordered a few xtals from china. Oh lets say 50.
Nothing says a 6 mhz xtal and divider can't work. Just adds complexity and
cost.
By the way the MAS 6180 is available but the distro wants an order of 50 at
$4 each.
I can't take on the role of purchasing and distributing the chips.
Regards
Paul


On Wed, Jun 19, 2013 at 10:41 AM, ed breya <eb at telight.com> wrote:

> I sent this on the 18th, but it didn't show up, so here goes another try.
> I don't know if something's wrong with my email. Please excuse if the
> redundant original shows up too.
>
> Original message:
>
> At low frequency, the HC parts should take very little dynamic current -
> the big current draw is from biasing gates in the linear region for
> oscillators and low-level signal triggering, for example. Running them at
> minimum voltage should reduce the current a lot. Sometimes it's best to
> separate the linear-biased items and run at lower voltage, or from a
> slightly isolated version of the main supply, via a resistor (and a bypass
> cap), to limit the current in case anything gets stuck.
>
> Ed
>
>
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