Re: AC Power Adapter
- From: "w_tom" <w_tom1@xxxxxxx>
- Date: 1 Jan 2007 09:35:47 -0800
Leythos assumes surges damage electronics like waves on a beach. He
still denies how electricity works. First that surge current flows
through everything in a path from cloud to earth. Then any item in
that path can be damaged. Not necessarily the first item. Not the
last item. Any item in that path can be damaged. Instead, Leythos
would have us believe the UPS acts like a dam. Somehow, by failing in
milliseconds or seconds, that UPS will stop a surge that occurs in
microseconds? Only when myths are promoted.
Meanwhile, where is this component inside the UPS that will stop what
three miles of sky could not? Leythos will not say. He cannot.
Leythos claims the UPS will stop a surge - and does not even provide a
manufacture number for that claim. What is this component that absorbs
what three miles of sky could not stop? Effective surge protection
does not even try to stop, block, or absorb surges. Effective
protection shunts. Any protection that would absorb a surge is
mythical.
In reality, the surge will pass right through that UPS and directly
into the appliance. Most all UPSes connect the appliance directly to
AC mains when not in battery backup mode. Furthermore, another wire
carries the surge right around (bypasses) the UPS. So where is this
magic device that will somehow absorb a surge? Well, Leythos is
promoting an urban myth. He even claims a computer grade UPS does not
connect to AC mains when not in battery backup mode.
So we look at an output of this computer grade UPS. Its 120 volt
waveform is exactly that on the AC mains. What happens when it shifts
to battery backup mode? It outputs two 200 volt square waves and a
spike of up to 270 volts when in battery backup mode. Yes, that dirty
electricity in battery backup mode is acceptable because computers
contain so much internal protection. Does that sound like a UPS
isolating laptop from AC mains? Of course not. When in battery backup
mode, only then is laptop isolated from AC mains - and is given some of
the dirtiest electricity available. Leythos is famous for his myths.
Laptop connected to that UPS is directly connected to AC mains.
BTW, what is Leythos' experience in the field? He has numerous
devices not damaged by a surge but had no surge protector. What
protected them? According to Leythos logic, an "invisibile surge
protector". What really protected them? Protection already inside
every appliance.
Leythos wrote:
Not true - the UPS will take the hit before the Laptop sees it, and the
laptop may never see it.
Your claims fall short with lots of experiences that have been repeated
in the field, that completely contradict that UPS's provide no
protection.
.
- References:
- Re: AC Power Adapter
- From: w_tom
- Re: AC Power Adapter
- From: Shenan Stanley
- Re: AC Power Adapter
- From: w_tom
- Re: AC Power Adapter
- From: Shenan Stanley
- Re: AC Power Adapter
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