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Posted by Gene on 02/24/07 19:33
Thinking ~ getting this little $50 unit, if all else fails, I can
use it on a PC or something...has AVR with 120VAC out,
not sure how clean it will be though. It's cheap & folks seem
to like it. Short on noise, but I guess I could plug another
noise filter gizmo in-line for that...
CyberPower CP685AVR 685VA
http://www.provantage.com/cyberpower-cp685avr~7CYPR01X.htm
http://www.newegg.com/Product/Product.asp?Item=N82E16842102044
Not buying the above now, just looking:-)
Gene
"Gene" <genes@wildblue.net> wrote in message
news:gg%Dh.7$6D1.100451@news.sisna.com...
> Thanks.
>
> If anyone would care to pick out a specific hardware
> device(s) by make & model - I would be most appreciative.
> I'm dizzy from reading specifications for the last two days :-)
>
> Gene
>
>
>
>
>
> "w_tom" <w_tom1@usa.net> wrote in message
> news:1172336886.375961.307720@h3g2000cwc.googlegroups.com...
>> On Feb 23, 6:50 pm, "Gene" <g...@wildblue.net> wrote:
>>> Yeah, I need to do some research & find one that maintains
>>> a high constant voltage & is extremely clean. I suspect that
>>> line noise could play a part in my problems. Having 110VAC
>>> attached to the camcorder has always been a noise concern
>>> for me. It's hard to catch this with a common volt meter.
>>
>> The typical UPS connects electronics directly to AC mains when not
>> in battery backup mode. This one, for example, claims a modified sine
>> wave. And so we look at that modified sine wave. 120 volts is two
>> 200 volt square waves with up to 270 volt spike between those square
>> waves. Is that UPS protection? Yes. Is that a sine wave. Yes. But
>> the UPS is the source of the dirtiest electricity.
>>
>> You are making assumptions rather than following the evidence. The
>> power supply inside each component must make all noise irrelevant.
>> But other problems may exist. One as suggested ground loops.
>>
>> Meanwhile the UPS as described will cost $500+.
>>
>> Do you have line noise? Well if the power supply inside components
>> is defective or missing essential functions, then these line filters
>> may replace what should have been installed:
>> http://www.schurterinc.com/products/usa/pemfilter.asp
>> http://www.corcom.com/
>> http://www.cor.com/PDF/Q.pdf
>> http://www.interpower.com/ic/p30-35list.asp
>> http://www.interpower.com/scripts/wsisa.dll/WService=ic/p35list2.p?only_filter=YES
>>
>> An example of how it might be assembled:
>> http://www.ethanwiner.com/dimmers.html
>>
>> Otherwise find hefty line filters such as
>> www.surgex.com
>> www.zerosurge.com
>> www.brickwall.com
>>
>> Notice the price to fix something that must be inside that
>> electronics power supply. But again, we are only assuming noise.
>> Reality is probably something completely different. And again, why do
>> they say in CSI, "Follow the evidence". You are trying to solve a
>> problem using classic junk science reasoning. Provides are facts that
>> others should have known before making that UPS recommendation. What
>> does the UPS numerical specs say? That UPS typically connects
>> appliances directly to AC mains (and the noise) when not in battery
>> backup mode.
>>
>>
>
>
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