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Mains Conditioners
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Graham Slee View Drop Down
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Joined: 11 Jan 2008
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Points: 16314 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2008 at 6:09am
I guess we have reasonably good mains power in South Yorkshire (England). In fact it's supposed to be 230Vac but it measures 256V most days, so either it isn't on heavy load from industry (What industry? There's hardly anything left over here!), or they never replaced the good old sub-station transformers when we "fell in line" with Europe.

However, as rightly stated, that may not be the case elsewhere, and I guess dvv in Serbia has to grapple with a different kind of mains power to me? I'd say that makes him more clued-up about the subject and I welcome more of his sound technical knowhow in explaining things in further detail.
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps
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tg [RIP] View Drop Down
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Points: 1866 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tg [RIP] Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2008 at 10:20am
Originally posted by ServerBaboon ServerBaboon wrote:

I think that impression was gained on a Rockgrotto thread you took part in.
~ snip ~


Yes, that was the source of the impression that I originally quoted:

in fairness, Graham did not directly contribute to the thread where the question was directly put, instead the reply came second hand from a customer who had been speaking with him a day or so previously.

It was from that secondhand report that I gained the impression to which I originally referred. (and particularly WRT the instability issues therewith)

IIRC GS was otherwise preoccupied around that time and a direct response was not forthcoming.

There had been asides at various times that had led to the direct question.
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dvv View Drop Down
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Points: 95 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dvv Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2008 at 11:41pm
Aha, GOTCHA Graham!
 
"What DVV has to cope with in Serbia" ...
 
Now think - what causes junk in the power lines? Devices connected to the grid, what else? OK, so who would have more devices attached to the grid, an underdeveloped country, or a highly developed country? I'd say the developed country. And who would have more sources of disturbance, a 9 million people Serbia, or a 54 million Britain?
 
Onward Christian soldiers - who at a guess would have more PCs, the Capital Offenders in producing power line junk (because of switchmode PSUs) second only to vacuum tube audio (AAAAAAARGGGHHHH!!!!!!), Serbia with its say 3-4 million PCs, or Britain with its say 50 million PC population?
 
True, this is offset to a point by better power transmission gear used in Britain, but that's perhaps 5%, 6% or so, too little to make a real difference.
 
Did I mention that a good friend in Paris (France) measured a potential of 70 V (should be less than 0.8 V) on his ground line? With a potential like that, I would be very surprised if he didn't hear a drastic difference for the better after connecting my filter, which is 100% insesitive to such "minor" problems.
 
No, line noise is a developed country bugbear, and damn it Graham, you should listen to your own headphone amps with a filter preceding them, you might hear things you ordinarily don't. LOLLOLLOL


Edited by dvv - 27 Feb 2008 at 11:43pm
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Graham Slee View Drop Down
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Points: 16314 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2008 at 11:59pm
OK, I agree.

And it would be interesting to create some form of database to correlate how different parts of the UK are affected. Maybe we can do this using the poll function I think we have on here? Would you be up for that?

All I was commenting on is what I and a few customers had found using our products with or without mains conditioners. And I know there were at least two different types of conditioner.

In each case the equipment that wasn't ours was reported to be more musical with the mains conditioner than not, but that it was the opposite case with our products.

However, since then I have had reports of customers having greater success with a conditioner. I therefore think it could be due to local influences here in the UK.
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps
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dvv View Drop Down
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Points: 95 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dvv Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2008 at 8:18pm
Graham, I completely agree there are very significant local differences - hence my repeated comment that there is no way to accurately predict the effects of any mains filter, it's a heueristic thing people, you simply have to try and see (well, listen, but also see, try the telly with it, you could be in for quite a surprise).
 
I'll try to get one of mine to you, Mr G, despite the constraints of local laws, still awaiting reforms to something sane. You might want to try it out, if no like, then flog to some unsuspecting customer. Wink If like, then agree with the interested parties on this site and ship it around the country a bit.
 
BIG PROBLEM - no UK socket version! Only European style Schuko, or international style IEC, adapters will be required. Graham, if you know somebody with a CNC machine, I could send a blank which you could drill locally, wiring is a cinch, and you know I trust you with all my designs, God, we've exchanged enough of them.
 
I've just paid local manufacturing highwaymen for @#$%^& expensive cases, so I'll see how I can juggle the books and get one to you by the end of March or early April. Just in time for the blossming.
 
How's that sound?


Edited by dvv - 28 Feb 2008 at 8:19pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2008 at 12:29pm
Does any one have any ideas about good quality "multigang socket extensions" ( is that correct? Would surge protection affect performance.
 
Some one mentioned " Supra" models. Are they any good?
 
I need 2 x 4 way extensions.
 
Adrian.
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Dave Friday View Drop Down
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Joined: 07 Apr 2011
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Points: 173 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave Friday Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2011 at 11:02am
Morning all, a bit of an odd one this. Regarding serge protectors.
 
We just had a serge protector blow up and catch fire! At the same time various bits of equipment (Linn power supply board, air con power transformers, CD players, amplifiers etc) blew up.
 
On checking the incoming power (mains) it was found to be 420 volts!
 
Electric company/ board told us a neighbour had the same thing happen.
 
Any comments/ advice?
 
Regards, DF
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