[time-nuts] UPS for my time rack

Bob Camp kb8tq at n1k.org
Wed Oct 14 18:30:16 EDT 2015


> On Oct 14, 2015, at 2:34 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> --------
> In message <20151013225202.1e70abe8 at aluminium.mobile.teply.info>, Florian Teply
> writes:
>> DC-DC converters with very
>> good efficiency exist for quite some time now.
> The one I just put in my HP5065A does 60W with 90+% efficiency
> in a 2x1x.5 inch package:
> 	http://phk.freebsd.dk/hacks/HP5065A/20150930_dcdc/index.html
>> Umm, around here, at least for ham radio operators, it seems many
>> standardize now on PowerPole connectors for 12V DC.
> They're quite neat, but I wish there were something a little less
> heavy-duty for the 1-2 Amp range.

So far my answer to that has been the coaxial power plug that you see on a lot of wall chargers.
Pick a size and have them ship you a bucket full of pre-made cables for next to nothing. The cables
with both male and female ends are cheaper than the ones with tinned leads on one end (go figure …). 
That makes the “which one do I buy” decision pretty easy. Once they come in and you chop them up, a 
bit of quality time with the soldering iron gives you a reasonable inventory of power squids to distribute 
your +6, +12 or +24V.


> -- 
> 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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