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Mains drop out |
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peterb
Senior Member Joined: 02 Feb 2017 Location: Cornwall Status: Offline Points: 332 |
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Posted: 19 Jul 2017 at 12:36pm |
Having read lots of posts on this Forum I think I am like many other members, living in a rural area with not the most stable of mains electricity supply. This year we have had at least 4 losses of supply (brownouts), some which lasted over 15 minutes and others, like yesterday which was only a couple of seconds. This led me to think how could I protect my HiFi from these Mains failures, particularly the very short cycles which I think could be quite damaging.
There are lots of UPSs available but they have been designed to work with PCs etc, not Amps and Preamps. (as far as I can tell). Have any other members faced, or even better, solved this problem? Peter |
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Peter
--------------------------------------- Dual 505-1, Cyrus CD T, DIY 80W MosFet amp and PreAmp, 2xKEF 103.2 |
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Richardl60
Senior Member Joined: 04 Nov 2014 Location: Yorkshire Status: Offline Points: 1468 |
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We have had short outages that killed two fridges. My mains hubs do have some protection.
On a few occasions I have noticed the sound has been markedly different before and after both ways. |
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BackinBlack
Senior Member Joined: 05 Feb 2012 Location: Hinton, N'hants Status: Offline Points: 2020 |
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Similar problem for me, quite frequent very short interruptions during storms. O/head line breakers usually automatically cut back in after a few seconds. I've not suffered any equipment failures (yet, fingers crossed ). Sound sometimes takes a little time to come back to normal, annoying but not too troublesome.
I would think that the best solution for the low power 24V DC equipment would be a supplementary battery supply with auto switching and off demand charging circuit. Depends on whether you want to listen during power loss or just maintain the power supply. Higher powered equipment such as amplifiers presents a different problem in that batteries would have to be quite large to manage anything but the quiescent current, but it can be done. I'm not sure how good some of the better UPS units are at producing a clean sinewave that won't upset the main smoothing capacitors in linear power supplies. I know from using LiPo battery chargers on Lead-acid battery driven inverters that smoothing capacitors can fail due to the synthesised sine wave - messy. Ian |
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Just listen, if it sounds good to you, enjoy it.
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RichW
Senior Member Joined: 21 Jan 2013 Location: UK Status: Offline Points: 1471 |
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A company called PowerInspired make a range of UPS systems & mains regenerators.
I've been using their AG1500 regenerator for several years & it has been very reliable. An enquiry to them regarding their battery backup systems might be worthwhile. |
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Majestic/Enigma, Accession MM & MC.
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peterb
Senior Member Joined: 02 Feb 2017 Location: Cornwall Status: Offline Points: 332 |
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My target would be a safe shutdown, not really interested in using my HiFi during an outage.
As I said in my first post my major concern is the very short breaks in supply. What happens to the circuits that have just started to see a collapse in voltage only to get a pulse of full voltage. Can't see that would be good for the life of some components.
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Peter
--------------------------------------- Dual 505-1, Cyrus CD T, DIY 80W MosFet amp and PreAmp, 2xKEF 103.2 |
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Richardl60
Senior Member Joined: 04 Nov 2014 Location: Yorkshire Status: Offline Points: 1468 |
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Sounds like you are looking for some form of spike protection?
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peterb
Senior Member Joined: 02 Feb 2017 Location: Cornwall Status: Offline Points: 332 |
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The PowerInspired regenerator with battery backup looks like the sort of thing, not cheap though!
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Peter
--------------------------------------- Dual 505-1, Cyrus CD T, DIY 80W MosFet amp and PreAmp, 2xKEF 103.2 |
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