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Are PC surge protectors needed in the UK?

Power supply damages motherboard when a computer assembler purchases power supplies without consulting specifications. Intel specs for ATX power supplies demand that PSU not damage motherboard and other components:

Too many computer assemblers don't have necessary technical knowledge and therefore don't even know that overvoltage protection (OVP) has been a defacto standard for 30+ years. That motherboard damage probably may be traceable to the ill-informed computer assembler (who does not demand specs) or a power supply manufacturer who outrightly lies on his specifications.

There is nothing in a UPS that will accomplish the necessary OVP.

Other essential functions that should be found in the power supply specification, but that many 'bean-counter' selected supplies may be missing: Specification compliance: ATX 2.03 & ATX12V v1.1 Short circuit protection on all outputs Over voltage protection Over power protection EMI/RFI compliance: CE, CISPR22 & FCC part 15 class B Safety compliance: VDE, TUV, D, N, S, Fi, UL, C-UL & CB Hold up time, full load: 16ms. typical Efficiency; 100-120VAC and full range: >65% Dielectric withstand, input to frame/ground: 1800VAC, 1sec. Dielectric withstand, input to output: 1800VAC, 1sec. Ripple/noise: 1% MTBF, full load @ 25°C amb.: >100k hrs

Power supplies missing these and other functions are sold at good profit in the North American computer clone market. OVP must be in all computer supplies but is often missing in clone computers.

"J.J." wrote:

Reply to
w_tom
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You need to specify which kind of UPS. Some UPS will provide excellant over voltage protection.

Charles Perry P.E.

Reply to
Charles Perry

Overvoltage protection being discussed is on the 3.3, 5, and

12 volt outputs. Table 11 from Intel specs even defines where and what that OVP must do. There is nothing in a plug-in UPS

- outputting 120 VAC or 230 VAC to power supply - that is going to over voltage protect those DC outputs. Nothing. Only OVP that a UPS can provide - limit 120 VAC or 230 VAC. That will not solve an overvoltage problem on DC output of a 'defective by design' power supply.

J.J. asked:

Yes, if power supply does not have OVP. No if supply does have the required OVP. No UPS will solve this miss>

Reply to
w_tom

Reply to
w_tom

Which would be?

Certainly, at least to some point.

You're *ONCE AGAIN* yalking through your ass.

Really? I'm not from Missouri, but close enough. An IDE port monitors its supply voltage? You're simply talking out your ass, since it's been shot off repeatedly.

You haven't a clue (as usual). NTFS is a slight modification to HPFS (written by the same SB, AFAIK) to make sure that OS/2 couldn't access NT systems. Neither is a JFS, nor is either less corrruptable than FAT. Indeed NT systems are far more susceptable to corruption than other similar OSs because of the agressive write buffering. Even (non-JFS) OS/2 systems are better at self-healing than NT. Of course JFS is a standard part of OS/2 now. Windows? YMBK!

Reply to
Keith

People might take you a tad more seriously if you exhibited a scintilla of trainability. The next line is a hint...

/BAH

Subtract a hundred and four for e-mail.

Reply to
jmfbahciv

How in the world does he think that FAT has anything to do with physical disk specs?

That's really, really, really too bad. It used to know how.

/BAH

Subtract a hundred and four for e-mail.

Reply to
jmfbahciv

Not if you have an OS that knows what it's doing. A great part of file system code is supposed to anticipate such things. For instance, one approach is to not put the file entry in the user file directory file until after the last bit is written and the user's prog has issued a close.

Of course it's a bad idea :-) but most systems, that went through a design, allocate quite a bit of their code to Murphy anticipation.

/BAH

Subtract a hundred and four for e-mail.

Reply to
jmfbahciv

You knew that an IDE port is not a computer; has no intelligent functions? A disk drive is an embedded computer complete with voltage monitoring circuits. This controller is not the same as an IDE port.

Long before voltage drops below what digital circuits on disk drive require, the disk drive has detected the falling voltage and stopped writing. Disk drive hardware protects itself from voltage drop which is also why a power down will not interfere even with normal disk drive housekeeping.

The idea that an IDE port monitors voltage is an erroneous assumption and was not made in any previous post. An IDE port is nothing more than a bidirectional repeater. An IDE port has no intelligent functions and does not monitor voltage. Where did you get this idea that IDE port functions were even being discussed? Are you confusing IDE with some other hardware interface? Or did you just fail to read that previous post will sufficient care?

Posted previously was:

Where is an IDE > >> Will a disk drive write to the platter as voltage drops?

Reply to
w_tom

Oh, my! You are young.

/BAH

Subtract a hundred and four for e-mail.

Reply to
jmfbahciv

And yours blew-up just now when you can't make the distinction between an IDE Disk Controller and an IDE Hostbus Adapter.

*And* to the drive when it may encounter a bad sector afterwards, nomatter what filesystem is in use, though the 'damage' is temporary.
Reply to
Folkert Rienstra

Well, in that case you are probably old as methusalem. Not a working braincell left in your cranium.

Reply to
Folkert Rienstra

Richard Herring also continues to help you understand the concepts:

Reply to
w_tom

Not quite.

At least I'm not dying of PCitis.

/BAH

Subtract a hundred and four for e-mail.

Reply to
jmfbahciv

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