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Electronic Theory and Principle Discussion of electrical theory, law, etc.

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Old 01-26-2011
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Default A really weird way at looking at things

Last year I went to Interop in Vegas to take a look at what was considered the newest and greatest. I came back horribly disappointed at the fact most companies were in the business of selling service plans and warranties galore while neglecting the hardware they pushed, sometimes neglecting the hardware entirely relying on a 'magical cloud' ideal. This ideal has failed before and it will likely fail again, time will tell. Many booths sent their sales engineers alone, who could off the top of their head list every single certification and test that their product "passed" but not tell me what their product did, how it worked, or what it was built with/made of. On the semi-rare occasion I'd get someone who would know a little, they could at most tell me who they sourced the power supplies from, eg sparklepower, but not tell me what they had ordered the supply built to or with, after all that was proprietary information! I ran into about 5 or 6 companies that I could deal with out there and that knew their stuff, and knew that reliability was something that people were in the market for, rather than a "we'll get it fixed when it breaks" attitude. This leads me to the strange place that I usually don't buy a piece of equipment before I tear it down and look at it's individual components. I want the best chance of something lasting it's full service life, disregarding power failures, fluctuations, and natural phenomena. Every year that passes it seems like what I ask is unreasonable in some way, even though I know that I'm not the only one thinking in the same lines. People think I am crazy if I tear down an eval unit to see what it's made of, and think I am crazier if I send a unit back if it were not built like it was promised to be, but I think that folks should get the use out of say a $15,000 router, and that it should still be usable long after it's service life had passed. In more cases than not, with the economy the way it is, they'll likely be using that same piece of equipment long after they were going to replace it.

This leads me to testing equipment and such, and I find it's amazing how many failures you can eliminate by paying attention at the beginning. Some failure modes only show with time though, and only experience will show that. No environmental chamber or accelerated testing procedure seems to fully replicate just what aging and constant usage at it's real world capacities with real world dust, real world lazy people, and strange real world environmental swings can do to a unit, nor does anyone ever have the time to test something in such a way. One of the most frustrating things that happens to me is when I get something that fails in a predictable manor 2 or 3 years from the purchase date, because usually by then the issue is terminal in whatever other identical units I own. I learned this the hard way running a folding@home farm with power supplies and cheap motherboards. It's one thing to be blindsided by one PSU or component, but it feels like your are a deer trapped in the middle of a railroad track with constant scheduled freight deliveries forced to re spawn and experience death several times over when these failures mount.

I've lurked at this site for a few years, and keep rediscovering it every so often, and I have to say, I just love it when you tear the PSU's apart, seeing the engineering, or lack there of, that goes into a product before you buy it is great, knowing the pitfalls of one product over another is great, and knowing what I should expect when I peer through a fan grill is also wonderful. Thank you for all you do, the only thing you are missing is a time machine to simulate what aging does to the power supplies
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Old 01-07-2018
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Default

As a consumer society we look at the specs and go for the cheapest; have we not driven manufacturers and suppliers to cut every corner to deliver what we demand? Equipment only needs to last as long as the warrantee and not service life. There is some logic to this, those people like us that keep equipment running could be said to hold back the development of more efficient replacements.

Cars consume as much gas in their lives as the purchase cost, but still a lot of people consider initial cost more heavily than running cost. When invested money can double in value ever 10 years, it might not make sense to put that money into the longevity of equipment.

That said, I prefer to recap a power supply over buying new, and recently got quadruple life headlight bulbs for my car, along with a long life battery and long life tires. Having things breakdown at the most inopportune moment is just not worth it.

https://www.powerbulbs.com/us/produc...eadlight-bulbs


So you are not the only one to see things weirdly, but there is logic to the way the world is. But folding@home can cost you dearly; imagine each machine now runs at 100W year round instead of sleeping, that's $100 a year each and soon adds up to more than the cost of the equipment itself.

You also state "disregarding power failures, fluctuations, and natural phenomena"

https://www.amazon.com/Surge-101/b/r...d_i=B00P2GW7MG

claims

"Over 50% of equipment failure can be attributed to power surge/failure"

so I would not be so fast to disregard such a large influence on life; of course cheap power supplies can just leave out surge protection, so we need people like you who are forever looking inside the box...

Last edited by ashiekh; 01-07-2018 at 12:19 PM.
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