[Elecraft] [K3] UPS for K3

[Vic, K2VCO]

I don't think anyone mentioned this, but the inverter part of a UPS is a
switching power supply. Why add to the potential noise cloud around the
station? I have noticed lots of noise pollution from my various computer
UPSs. The solution of floating a battery across the output of the
regular 12v supply seems simpler and quieter to me.


On 7/21/14 9:26 AM, Jim Lowman wrote:
> Interesting!  I was thinking along the same lines about a UPS for the
> shack, but for a different reason.
> Aren't today's solid-state radios susceptible to damage from transients,
> much like our computers are?
>
> I would not turn on a computer that was not first connected to a quality
> UPS with surge protection.
> So, maybe not so much for backup, as most UPS are designed to continue
> to supply power to the computer and peripherals long enough to effect an
> orderly  shutdown.
> We don't suffer from protracted power outages here, but rather from sags
> in the line voltage.  This is especially true in the summer, when
> temperatures reach 100F and higher.
>
> But, what about surge suppression for our shack equipment?  Or is this a
> silly question?  Are we more susceptible to damage from lightening than
> from dirty power?
>
> 73 de Jim - AD6CW
>
> On 7/21/2014 5:30 AM, Dennis Griffin wrote:
>> Here is a link to the PWRgate that I believe Bruce is referring to.
>> This item is a compact, relatively low cost, well regarded solution
>> that would be appropriate for use in the scheme Bruce has suggested. A
>> yellow or blue top Optima, or other good AGM battery, along with a
>> PWRgate, wouldn't cost too much more than the UPS being considered,
>> but would be much more useful & versatile.
>>
>> http://ki0bk.no-ip.com/~pwrgate/LLPG/Site/Welcome.html
>>
>> 73 de Dennis KD7CAC
>> Scottsdale, AZ

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/