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Author Topic: Micro tolerance line regulation = MTLR explanation  (Read 2970 times)

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Online Kiriakos GR

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Micro tolerance line regulation = MTLR explanation
« on: April 03, 2023, 10:15:12 AM »
Micro tolerance line regulation and or in sort MTLR, this is a description that Seasonic brand using allot, but not anyone else.

Micro tolerance line regulation, this is a more familiar term, its about DC voltage output when AC input voltage this varying and or fluctuates.

In another example, PSU operating condition, we expect when this operates at 120 ACV and or at 230 ACV,  the DC side this to deliver identical voltage output.

And therefore this specification MTLR (Micro tolerance line regulation):
This is totally separate from the second specification of DC load line stability.


PSU Testing / TLR  tolerance line regulation.

The way to test a PSU of how well this perform at ACV input variation, this is by us manually varying the input voltage.
This test can be performed by us using an VARIAC transformer for a rough evaluation because we are unable to simulate fast varying ACV.

The second and more recommended testing apparatus, this is a digitally controlled ACV power supply / source.
A better description this is a programed ACV power supply / source.     

The programed ACV power supply / source, this can be programed so to switch it voltage output instantaneously and in a range of voltages.

Currently there is not any Testing standard, and or a specific testing pattern, that one programmable and digital ACV power supply / source, this must be programed so to execute, in order us to test a computer PSU at specific conditions.

Should we use as testing range  230V +/_ 10% as testing voltage at the source?
Should we use as testing range 120V up to 240V? 
Should we use as testing range 230V   +/_ 5% with voltage varying every 5ms?

There is no official guidelines of how such tests must be performed at such a AC line input / DC output testing.

The combination of a good computer PSU + motherboard, this sum includes several of DC filtering capacitors, along electronics, all working in favor of DC rails stable output delivery.
Therefore even if ACV side this is indeed varying, the DC side has a huge pile of electronic components all working in favor of DC side stability.

In conclusion:
There is no chance any PSU testing lab this to be able or capable to deliver solid testing results about tolerance line regulation.

Few amateurs pretending the PSU testing lab (PSU reviews website), they have come to the point to remove capacitors from a PSU at their testing, they sabotage the PSU circuits, so them (the testers) to find clues and determine the winner.
Such hilarious actions, they are not recognized from the side of electrical measurements science, this is not a valid way of testing.
And as such any PSU testing reports delivered as PSU product review by them, this has equal value to a toilet paper roll.   :)
   

What is the difference between load regulation and line regulation?
Load regulation is the ability of a power supply output to remain constant given changes in the load.

INTEL it does deliver guidelines of how this testing it should be performed, with always the simulation of a motherboard in use, even so the few amateurs pretending the PSU testing lab, they deliberately ignore and or not follow these either.

In the real world, its close to impossible to make a easy judgment of Fresh or of a NEW PSU about it performance, if you do not sabotage first the PSU circuit, so to simulate electronics performance when the PSU this will be close to it end-of-life with most filtering capacitors them be totally deteriorated.
   
And therefore, when all PSU test results, these are a product of amateurs who improvise at the so called as testing methodology that is based on their imagination, these are meaningful as content, and no buying decision can be made from such test results.     

While Seasonic along CORSAIR both encourage product testing made due consumers hands, they should both be more careful and avoid in the future the testers, them using mostly their imagination as testing methodology.
Such low quality of reviews they are not helping their marketing and or their products promotion.
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Offline overvolt

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Re: Micro tolerance line regulation = MTLR explanation
« Reply #1 on: April 13, 2023, 10:29:01 PM »
Few amateurs pretending the PSU testing lab (PSU reviews website), they have come to the point to remove capacitors from a PSU at their testing, they sabotage the PSU circuits, so them (the testers) to find clues and determine the winner.
Such hilarious actions, they are not recognized from the side of electrical measurements science, this is not a valid way of testing.
And as such any PSU testing reports delivered as PSU product review by them, this has equal value to a toilet paper roll.   :)


All good points, and well documented.
From the other hand, all these PSU reviews website/ forums,  they do not tolerate experts as members, their usual tactics are to insult them and or BAN them = silencing.

This is what I do enjoy with the work of Kiriakos, the truth will shine no matter of what.   ;)     

Offline Andrew-88

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Re: Micro tolerance line regulation = MTLR explanation
« Reply #2 on: April 14, 2023, 03:17:59 PM »
From the other hand, all these PSU reviews website/ forums,  they do not tolerate experts as members, their usual tactics are to insult them and or BAN them = silencing.   

This is a fact, silencing of true experts this happens at most PC enthusiasts forums, they have form a consortium to control public opinion.
One identical product review this is shared at five web site, you seek and for a second review from another source, and all that you can find is the copy of a single review.

At 2023 this sector, of PC enthusiasts forums and review sites, this is now a very distorted one.
In the positive side of things, consumers are now further educated, and the followers of these PC hardware Guru they are fewer in numbers than ever before.     

Online Kiriakos GR

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Re: Micro tolerance line regulation = MTLR explanation
« Reply #3 on: April 14, 2023, 03:36:12 PM »
As computers enthusiast my self at my youth, I did begin to participate at so called forum/community (several ones) since 2001 and later.
I have seen it all.
Poor quality of community management and problematic people, these positioned as moderators.


What bothers me, its the damage made, at people trust over the years.
ITTSB this is a protected environment and space so working professionals to join in, but even this concept did not worked well as I thought that it will.
 
       
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