Again, it seems as though *you* are the ignorant one. The momentary
ON/OFF switch on the front panel goes to the INPUT of a logic circuit
on the motherboard.
Congratulations, you've stated nothing new and nothing that
supports your erroneous guess yet, but let's keep reading
and see how much more BS you'll spew...
It is the OUTPUT of this logic circuit that pulls
down the PS_ON input, turning on the PSU. But, this will only occur
as long as this logic chips Vcc - the +5vsb - is high enough to allow
this chip to operate.
So it's news that a chip only operates when it's supply is
above a minimal threshold? I hate to break it to you, but
these are basic facts that you might as well just skip over
as they only show stupidity in coverage instead of just
skipping right to the part where you were wrong.
Once the PSU has been unplugged, the +5vsb rapidly
diminishes, leaving the logic circuit benign. Push the ON/OFF switch
all you want. It will accomplish nothing.
you can't have it both ways... previously you tried to claim
the psu won't drain, yet it has to if the 5VSB diminishes,
because it does, in fact, no longer run from a 60Hz
transformer. You don't want to be bothered with facts
though, you learned one idea a long time ago and your closed
mind prevented any further learning since then.
Unfortunately your ego prevented continuing your education
and basic scientific methodology. IF you had bothered to to
do that, you would not just read a spec sheet and GUESS you
suddenly know what the industry is doing, would realize that
"suggestions" in a spec sheet are very, very often ignored.
Fact is, plenty of ATX PSU, including many of the most
common models, do not settle below the 5VSB threshold in a
few ms. If you had ever bothered to do any testing instead
of just pretending to know by reading a line of text, OUT of
context, your error rate would be greatly reduced.
You don't want to do that though- can't be bothered to,
apparently, and so you remain ignorant. Arguing without any
evidence is a fools folly. Randomly order a power supply
from Newegg right now- bet you it doesn't drain the 5VSB in
a few dozen ms.
A) I am not going to assume what revision of ATX PSU he has, and
B) nothing you wrote above (with mouth foaming) changes the fact
that pushing or repeated pushing of the front panel ON/OFF switch
after the PSU has been unplugged does NOTHING in the way of discharging
the 300v buss, contrary to your beliefs.
Has nothing to do with belief, has to do with the simplest
of tests- voltage measurement. I shudder to think what a
mess any technical work would be if we only relied on those
who read one sentence and never bothered to get any
experience.
Whether the 5VSB circuit has enough voltage to keep the
logic stable depends on the system load on it. With a
system that doesn't heavy load it, it may be high enough
after a couple seconds still. I could care less whether you
agree because it is a real, observed event and that always
trumps a vague guess based on misinterpretation of
literature. You don't actually have any experience
whatsoever do you? You appear to be someone who has bought
a computer, never even touched a power supply rather than
just reading bits and pieces of information out of context
rather than seeing it in reference to real-world designs
actually used.
If the system is more heavily loading the 5VSB rail, it may
not trigger the PS-On circuit. Even so, the PSU still
drains the caps.
This is getting silly, every single post you make is so
misinformed I have to wonder if you're just trolling.
