[K3] UPS for K3
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Is it overkill to power my Astron RS-35 power supply that runs my K3 from a
UPS? I am looking at a CyberPower CST1300AL from Costco (http://tinyurl.com/pajlsav) . It produces a "modified sine wave" when the primary power has been lost, which is true of most UPS models. I'm usually home so the plan is to turn the K3 off with its power switch in the event of a power failure. Looking at http://www.cyberpowersystems.com/support/faqs/topologysinewave.html my conclusion is that type of UPS is adequate for an Astron supply powering the K3, a computer, and accessories, but I'm no engineer. 73, Jim N7US ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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> Is it overkill to power my Astron RS-35 power supply that runs my K3 from
> a UPS? In my opinion, yes- it's overkill. I personally would probably use the Astron to float a deep cycle or SLA battery on it's output. You might also want to investigate adding a PWRgate or similar Schottky diode matrix to the mix. This would provide not only the protection against abrupt power failure that you seem to seek, but also provide some additional operating time in the event of power fail. Those UPS units are designed to run for only a handful of minutes, while a computer system shuts down. GL, Bruce/N1RX ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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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 On Jul 21, 2014, at 4:34 AM, Bruce Beford <[hidden email]> wrote: >> Is it overkill to power my Astron RS-35 power supply that runs my K3 from >> a UPS? > > In my opinion, yes- it's overkill. I personally would probably use the > Astron to float a deep cycle or SLA battery on it's output. You might also > want to investigate adding a PWRgate or similar Schottky diode matrix to the > mix. This would provide not only the protection against abrupt power failure > that you seem to seek, but also provide some additional operating time in > the event of power fail. Those UPS units are designed to run for only a > handful of minutes, while a computer system shuts down. > > GL, > Bruce/N1RX Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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For those that like to build things, see:
http://k2jji.org/files/Power_Gate_Assembly_Instructions_v2.pdf for instructions on building your very own power gate... Even has a rudimentary battery charger you can add... The devices cost a whopping 3 bucks delivered from eBay. -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Mon, 2014-07-21 at 05:30 -0700, 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 > > On Jul 21, 2014, at 4:34 AM, Bruce Beford <[hidden email]> wrote: > > >> Is it overkill to power my Astron RS-35 power supply that runs my K3 from > >> a UPS? > > > > In my opinion, yes- it's overkill. I personally would probably use the > > Astron to float a deep cycle or SLA battery on it's output. You might also > > want to investigate adding a PWRgate or similar Schottky diode matrix to the > > mix. This would provide not only the protection against abrupt power failure > > that you seem to seek, but also provide some additional operating time in > > the event of power fail. Those UPS units are designed to run for only a > > handful of minutes, while a computer system shuts down. > > > > GL, > > Bruce/N1RX > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Where might one actually find the "kit" on-line?
I have not had any luck with my search. Thanks, Bill - W0BBI |
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In reply to this post by N7US
The kit referred to in these instructions:
http://k2jji.org/files/Power_Gate_Assembly_Instructions_v2.pdf is no longer available from the NFARL. However, the instructions contain all the info needed for a builder to source their own parts. Bruce/N1RX > Where might one actually find the "kit" on-line? > I have not had any luck with my search. > Thanks, > Bill - W0BBI ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dennis Griffin-2
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 > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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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/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Jim Low man
Good question, Jim. I believe you are correct.
You might investigate power conditioning equipment for protection from both surge and sag and transients, and they appear to provide add some degree of regulation. Furhman is a respected power conditioning brand for gear that is used in recording studios and with rock bands and doubtless there are others. ----------------- James -K8JHR --------------------- On 7/21/2014 12:26 PM, Jim Lowman wrote: > 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? > __________________________________________________ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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