Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics.

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RE: AC Power

Posted by Ugly (A) on May 7, 2008 at 22:59:16

In Reply to: AC Power posted by Lynn on May 7, 2008 at 19:36:47:

"What is the technical basis for power conditioning, AC purifiers, etc.?"

To a certain degree the performance of any device running on grid power will be dictated by the quality if that power. Of course power problems will be more evident with some designs as judged by system performance but all designs will be slave to it at some level.

"Several very reputable manufacturers of high end components do not recommend using any them (actually stating it is best to NOT use them)."

Most likely since they know that most wont understand how to properly design in equipment light footprint yet effective and and improper design could negatively effect of the component they sold you. Since power conditioning done well can get quite spendy depending on just how far it is taken, it will typically be designed in with a system in mind in order to not overspend but still give the necessary grunt to do the job. I would also like to point out that solutions do not have to be expensive to be effective at soving certain power quality issues but to go all the way will get spendier and spendier the closer you get to perfect.

"I have also read quite a few posts stating that a high quality power supply should isolate a component from AC issues."

I disagree and would say that a power supply can do nothing more than filter grid issues. For example even a rechargeable battery driving an AC power generator needs to recharge off the grid eventually. IMO the only true isolation would require an alternate energy source.

"Does this mean that under voltage, over voltage, and line surges within a reasonable tolerance are a non-issues? What about noise on the AC line?"

Depends on your definition of reasonable and what exactly your solution ends up being. Keeping in mind that spending more doesn't always equal better, in general the more you are able to spend on the job the more ideal the solutions available to you with a completely alternative power source being the limit.

"Is there any scientific/technical justification for spending money on power conditioners, re-generators, filters, and such?"

I would say sure but I would warn that doing the job in a way that truly does improve overall performance without breaking the bank takes an expert/pro. Not every item on the market is applicable for every application.

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