"w_tom" wrote in message
...
That's all good and nice reasoning which the designer
already considered when he designed a power supply that is not
damaged by brownouts.

Or so you hope.

One of the things I used to do (in a past life, but for my
current employer) was to supervise the environmental, etc.
qualification testing of new products. Do you think we
never EVER found problems with power supply design
that showed up in the AC line compatibility testing?

It would be a truly wonderful world in which everything
was designed as it should be, in which everything was
actually BUILT per those designs, and in which the
components that went into that construction never ever
had any sort of problem of their own. Just as soon as
you find that world, you let us know.

Intel does not make power supplies? Underwriters Laboratory
- UL - does not make anything. Therefore UL standards don't
exist either?

Both Intel-generated specifications exist, and UL standards
exist. And so, according to you, everything ever
designed and built automatically complies with those
standards? Hallelujah! I can call down to the test lab
right now, and tell those guys to take it easy! There's
nothing more for them to do!!!!

If a computer power supply is damaged by the brownout, then
the brownout is not a reason for failure. That failure is
directly traceable to the human who typically buys on price
rather than first learn basic electricity concepts.

If the power supply does not come with written specs -
things they actually claim to do

First, it's hardly reasonable to expect anyone who buys
a power supply to be sufficiently educated in power
supply design so as to recognize a good design or a bad
one at first glance. (Hey, if they're THAT good, they should
be designing and building their OWN, and then I know several
places that will likely want to hire them!) Second - you again
show an awful lot of faith in the mere presence of "written
specs." Many aren't worth the paper they're printed on.


blame themselves. Brownouts do not damage properly
constructed power supplies...

....as long as they were properly designed AND
constructed, built from perfect components, and have
suffered absolutely no ill effects due to age, electrical
or mechanical stress, etc., since being built. By this same
sort of reasoning, I should be able to claim that NOTHING
which is "properly designed and built" should ever fail. Once
again, the reliability guys will be SO glad to hear that...


Bob M.