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(random) AC and plasma tv on same surge protector
SNAAKE:
well I had the tv hooked up to a surge protector for like 3 years and its still working fine.
the AC used to be connected directly on the wall outlet but I need another power source for an arcade cabinet(its lcd..isnt drawing much power).
what kind of UPS do I need for the plasma?? I will check that avsforums too and see what those guys are doing.
Ed_McCarron:
--- Quote from: MonMotha on May 30, 2011, 02:17:47 am ---My biggest concern would generally be harmonic injection back into the utility line by the air conditioner, but that's unlikely to actually affect anything with a modern switch-mode supply like all modern flat panel TVs have.
--- End quote ---
Ferroresonant transformer? A few of my computers live inside of an old ONEAC unit... I believe they do make small ones, but would it be overkill?
MonMotha:
Ferroresonant transformers are pretty dirty, but I wouldn't expect to see one in a window air conditioner. Was I'm thinking is during turn-on and turn-off. Those can be pretty dirty events that inject lots of nasties back into the utility line. They're short lived, at least. A modern SMPS in a TV should be pretty tolerant of all that crap, though, as long as the peak voltage isn't terribly high. Many are actually "universal input" that will operate off up to 240VAC and hence have quite a bit of headroom on 120V US circuits.
The reason for plugging it directly into the wall is simply a loading issue. No reason to subject a power strip to that unnecessarily.
Ed_McCarron:
Ah, no, not on the AC... For the TV. Would it help stabilize the power, or am I misunderstanding the application of that type of transformer?
MonMotha:
Depending on the design of the ferroresonant transformer, the output may be dirtier (in terms of harmonics) than the input, though the voltage would probably be steadier. Honestly, the power supply in your TV doesn't care. Just put a good surge protector on it to keep out the REALLY nasty stuff (which a CVT might let through to some degree, anyway), and call it good.
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