PSU question - confused

  • Thread starter Thread starter Glendon
  • Start date Start date
Untrue, it could actually cost more to omit that part if the
PSU manufacturer (which is not Dell) were already producing
the whole board for many uses instead of setting up a
separate line or entirely new design,
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Thats not what I was suggesting at all. The normal thing is to make the
same psu or whatever item it is, but leave out any components not
needed for that model. This is standard practice in volume production.


NT
 
Thats not what I was suggesting at all. The normal thing is to make the
same psu or whatever item it is, but leave out any components not
needed for that model. This is standard practice in volume production.
Click to expand...

Again, leaving out the components means changing the line,
which can easily be more expensive than a couple of part
that are of trivial cost (pennies at most). Just having the
line, off-line long enough to do the switch would be a
greater loss (and expense) than that.
 
Thats not what I was suggesting at all. The normal thing is to make
the same psu or whatever item it is, but leave out any components not
needed for that model. This is standard practice in volume production.
Click to expand...

Have fun explaining how come Dell didnt drop the -5V
rail when they started to use standard ATX supplys.
 
Rod said:
Have fun explaining how come Dell didnt drop the -5V
rail when they started to use standard ATX supplys.
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Because they had very bad publicity over
their propriatry supplies??
 
Sjouke Burry said:
Rod Speed wrote
Click to expand...
Because they had very bad publicity over their propriatry supplies??
Click to expand...

Not relevant. If they had supplied the original supply with the
components for the -5V rail missing, someone replacing that
supply when it failed could use a standard ATX supply which
has the -5V rail components included without any problem.
 
kony said:
Again, leaving out the components means changing the line,
which can easily be more expensive than a couple of part
that are of trivial cost (pennies at most). Just having the
line, off-line long enough to do the switch would be a
greater loss (and expense) than that.
Click to expand...

1,000,000 pcs @ 20c each is $20,000. I've only worked with small scale
assembly plant, not large, but I'd be surprised if stuffing machines
needed to be stopped for more than a minute if at all, to give them new
instructions. Nothing else need stop.


NT
 
1,000,000 pcs @ 20c each is $20,000.
Click to expand...

#1, it wouldn't cost 20c
#2, they didn't make remotely near 1,000,000 of them, think
closer to zero.

I've only worked with small scale
assembly plant, not large, but I'd be surprised if stuffing machines
needed to be stopped for more than a minute if at all, to give them new
instructions. Nothing else need stop.
Click to expand...

Apparently it's not so with larger production, plenty of
times you see open examples of it, for example unused
functions on PCChips motherboards, and PCChips is not a
company that splurges on excess parts if they can reduce the
cost.

More to the point, you seem to be implying that Dell would
omit these -5V but nobody else would. It's not the case,
the systems themselves are the evidence of what they decided
(or though indecision, lack of action), to do.
 
1,000,000 pcs @ 20c each is $20,000.
Click to expand...

Pity that ignores the cost of specials.
I've only worked with small scale assembly plant, not large,
Click to expand...

Thats obvious.

And you clearly dont have a clue about
real costs for an operation like Dell either.
but I'd be surprised if stuffing machines needed
to be stopped for more than a minute if at all, to
give them new instructions. Nothing else need stop.
Click to expand...

Pity there's more involved than that.
 
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