[time-nuts] Power supply for time source concerns

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Dec 24 11:40:59 UTC 2019


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>That again depends on topology and control type.  The canned converters 
>are almost always optimized to have the lowest number of switches and 
>work with cheap magnetics (single coil) without easily entering 
>problematic operation modes, noise is only a secondary concern. 

That depends a LOT on which canned converter you decide to buy,
if you only go after price, or W/mm³ capacity, then certainly yes.

But for a one-off application like this, any money saved on a
cheap model is easily lost many times over in the trouble it will
cause.

But returning to the original post:  Has anybody ever characterized
how much difference it makes to use two different PSU's for heater
vs. electronics sides of telecom Rb's ?

I'm sure there is a reason why they make it two different pins ?

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.




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