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From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Predictive failures
Date: Tue, 16 Apr 2024 14:22:28 -0700
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On 4/16/2024 8:37 AM, Edward Rawde wrote:
> "Don" <g@crcomp.net> wrote in message news:20240416a@crcomp.net...
>> Don Y wrote:
>>> Is there a general rule of thumb for signalling the likelihood of
>>> an "imminent" (for some value of "imminent") hardware failure?
>>>
>>> I suspect most would involve *relative* changes that would be
>>> suggestive of changing conditions in the components (and not
>>> directly related to environmental influences).
>>>
>>> So, perhaps, a good strategy is to just "watch" everything and
>>> notice the sorts of changes you "typically" encounter in the hope
>>> that something of greater magnitude would be a harbinger...
>>
>> A singular speculative spitball - the capacitive marker:
>>
>>     In-situ Prognostic Method of Power MOSFET Based on Miller Effect
>>
>>     ... This paper presents a new in-situ prognosis method for
>>     MOSFET based on miller effect. According to the theory
>>     analysis, simulation and experiment results, the miller
>>     platform voltage is identified as a new degradation
>>     precursor ...
>>
>>     (10.1109/PHM.2017.8079139)
> 
> Very interesting but are there any products out there which make use of this
> or other prognostic methods to provide information on remaining useful life?

Wanna bet there's a shitload of effort going into sorting out how to
prolong the service life of batteries for EVs?

It's only a matter of time before large organizations and nations start
looking hard at "eWaste" both from the standpoint of efficient use of
capitol, resources and environmental consequences.  If recycling was
mandated (by law), how many vendors would rethink their approach to
product design?  (Do we really need to assume the cost of retrieving
that 75 inch TV from the customer just so we can sell him ANOTHER?
Is there a better way to pitch improvements in *features* instead of
pels or screen size?)

Here, you have to PAY (typ $25) for someone to take ownership of
your CRT-based devices.  I see Gaylords full of LCD monitors discarded
each week.  And, a 20 ft roll-off of "flat screen TVs" monthly.

Most businesses discard EVERY workstation in their fleet on a
2-3 yr basis.  The software update cycle coerces hardware developers
to design for a similarly (artificially) limited lifecycle.

[Most people are clueless at the volume of eWaste that their communities
generate, regularly.]