Re: blown ibm x31


"John Doue" <notwobe@xxxxxxxxx> wrote in message
news:mgPzk.97$v65.83@xxxxxxxxxxxxxxxx
M.I.5¾ wrote:
"Richard Bonner" <ak621@xxxxxxxxxxxxxx> wrote in message
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AJ Lake (nomail@xxxxxxxxxxxxxxx) wrote:
...how far should the company go to protect the product from
customer abuse? If you protect from the wrong polarity do you need to
also
protect it from the wrong (too high) voltage? That would make the rest
of us
pay unnecessary inflated prices.
*** Only by a few dollars a product. Voltage regulators are very cheap
- under a dollar in quantity. Crude as it is, even a 10-cent zener diode
would offer some protection.


Simply following the instructions and not
hooking up unauthorized power supplies should prevent the problem.
*** One would think, but it is still possible to have a supply fail
and
pass high voltage or even AC to a laptop. A fail safe would be nice to
have. At one time, products did have them but as greedy companies made
things cheaper and cheaper, these things got left out. )-:


To the original poster: I have blown any number of electronic devices
while
playing at this hobby. I am not criticizing you, only saying that
companies
may not feel the necessity to protect it's equipment from the likes of
us...
*** Quality companies would. When I took electronics at college, we
were taught to build in protection to our power supplies. It was also
drilled into us that power supply design was the foundation of any
electronics device.


In college, you can afford a few dollars for protection components, but
in the real world, including just 1 dollars worth of unnecessary
components will cost your company $100,000 dollars from its profit line
over a production run of 100,000 units.


This line of thinking is way too primitive. Like there was no connection
between the design and quality of a product, and the price it can sell
for. If because of a superior design and quality you can sell the product
$1,50 more, having added 1 dollar worth of component gets you an
additional profit of $50,000.

And we all know that superior design and quality are eventually recognized
by the end customer ... if adequately marketed. But quality is not spelled
gadgetry ... Components need to fulfill a purpose contributing to the
overall quality and not just add a level of complexity and an additional
potential of failure.


You are thinking like an engineer. Unfortunately most companies are run by
accountants who see it an entirely different way. I used to work for a very
large manufacturer of electronic goods for the domestic market. Once the
design engineers had completed a new design, the accountants immediately
handed it to a department who had no engineering qualifications whatsoever.
Their function was to remove as many parts as possible with the unit had
remaining working. Although such departments are now history as reputation
is now of greater importance, nevertheless this mode of thinking is now
instilled into their design department.


.

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