phil-news-nospam@ipal.net wrote:
> In alt.tv.tech.hdtv Michael A. Terrell <mike.terrell@earthlink.net> wrote:
>
> | Bull****. Like ALL charges, it simply seeks a complete circuit to
> | flow. You have absolutely no grasp of the basic concepts, yet you
> | continue to spout your ignorance and lies.
>
> Not true.
>
> When you close a switch between a power source and a pair of wires that go
> out yonder, the electrical energy does not "know" whether the circuit is
> complete or not. If it refused to flow, it would not be able to find out.
> It will flow, whether the circuit is complete or not. What happens after
> that depends on what is at the other end, which could be an open condition,
> a short circuit, or some kind of resistive or reactive load.
>
> You've claimed to have worked in broadcasting in an engineering role. So
> you should understand what happens at the end of an open transmission line.
> The electricity flows to get to the open end. Yet it is not a "complete
> circuit".
>
Hmmm,
You seem to be confused between current flow(energy) and
voltage(poential) Nothing flows in an open circuit. If not we have to
rewrite Ohm's law. Show your credential to make a stamement like that.
Shameful.
> phil-news-nospam@ipal.net wrote:
>
>>In alt.tv.tech.hdtv Michael A. Terrell <mike.terrell@earthlink.net> wrote:
>>
>>| Bull****. Like ALL charges, it simply seeks a complete circuit to
>>| flow. You have absolutely no grasp of the basic concepts, yet you
>>| continue to spout your ignorance and lies.
>>
>>Not true.
>>
>>When you close a switch between a power source and a pair of wires that go
>>out yonder, the electrical energy does not "know" whether the circuit is
>>complete or not. If it refused to flow, it would not be able to find out.
>>It will flow, whether the circuit is complete or not. What happens after
>>that depends on what is at the other end, which could be an open condition,
>>a short circuit, or some kind of resistive or reactive load.
>>
>>You've claimed to have worked in broadcasting in an engineering role. So
>>you should understand what happens at the end of an open transmission line.
>>The electricity flows to get to the open end. Yet it is not a "complete
>>circuit".
>
>
>
> Yawn. You are trying your usual lame crap of misdirection.
> Electromotive force and electromagnetic waves are not the same. you
> claim to be an amateur radio operator, so you SHOULD know the
> difference.
>
>
Hi,
Is he a ham? What is his call sign?
Mine is VE6CGX.
On Sat, 3 May 2008 20:14:17 -0700 (PDT), w_tom <w_tom1@usa.net> put
finger to keyboard and composed:
>On May 3, 4:38*am, Franc Zabkar <fzab...@iinternode.on.net> wrote:
>> Can you elaborate on this by showing us the path taken by the strike
>> through the TV?
>
> See many posts that describe this same failure to a network of
>powered off computers. Surge incoming on wires that typically carry
>most surges into buildings: black (hot) AC wire. Surge arrived two
>plug-in protectors - each adjacent to powered off computers. Often
>that surge is trivial; does not overwhelm protection inside a
>computer's power supply. Maybe - but irrelevant due to the adjacent
>protector.
>
> Protector did its job - MOVs shunted (connected, diverted) surge
>current into all other AC wires including the green safety ground
>wire. Green wire connects directly to motherboard and network cards -
>still seeking earth ground.
>
> Path to earth was through the network and into a third computer.
>Through that third computer's motherboard, through modem, and to earth
>via phone lines. Semiconductors in these paths were damaged.
>
> We literally traced this path by replacing ICs. Some ICs (ie
>network interface chips) even had cracks on packages where surge
>current entered or exiting those ICs. Absolutely no doubt as to how
>surge currents found earth ground, destructively, via adjacent
>computers.
>
> Plug-in protector is not for and does not claim to protect from this
>typically destructive type of surge. Often surges are too trivial to
>overwhelm power supply circuits. But because that protector was too
>close to powered off computers and too far from earth ground, then
>surge was given an alternative and destructive path to earth ground
>via networked computers.
>
> Plug-in protectors are for surges that typically don't cause
>damage. When the essential 'whole house' protector is not earthed,
>then plug-in protectors may earth surges destructively through
>adjacent appliances. Every time? Of course not. But the same
>ineffective protection is demonstrated in Bud's citation - 8000 volts
>destructively on Page 42 Figure 8. That surge was permitted inside
>the building. Plug-in protector did nothing to avert 8000 volts
>destructively via the adjacent TV. Bud says otherwise by denying Page
>42 Figure 8.
>
> Page 42 Figure 8 eliminated by properly earthing a 'whole house'
>protector. Surges that seek earth ground destructively through
>household appliances must be earthed at the service entrance.
>
> What would have avoided above network damage? Homeowner later
>installed and earthed a 'whole house' protector. Solution necessary
>so that plug-in protectors do not earth surges, destructively, though
>adjacent appliances, even on Page 42 Figure 8. Solution necessary so
>that protection from a typically destructive surge exists.
OK, thanks. That all makes sense. However, I was thinking of a typical
2-pin TV, not an earthed computer.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Michael A. Terrell wrote:
> Tony Hwang wrote:
>
>>Hi,
>>Is he a ham? What is his call sign?
>>Mine is VE6CGX.
>
>
>
> It's in his sig file: KA9WGN
>
>
Hmmm,
That is sign format of novice class.
Tony Hwang wrote:
>
> Michael A. Terrell wrote:
> > Tony Hwang wrote:
> >
> >>Hi,
> >>Is he a ham? What is his call sign?
> >>Mine is VE6CGX.
> >
> >
> >
> > It's in his sig file: KA9WGN
> >
> >
> Hmmm,
> That is sign format of novice class.
In more than one way. Read some of the other crap he's posted on
news:alt.engineering.electrical if you have a strong stomach.
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
> Tony Hwang wrote:
>
>>Michael A. Terrell wrote:
>>
>>>Tony Hwang wrote:
>>>
>>>
>>>>Hi,
>>>>Is he a ham? What is his call sign?
>>>>Mine is VE6CGX.
>>>
>>>
>>>
>>> It's in his sig file: KA9WGN
>>>
>>>
>>
>>Hmmm,
>>That is sign format of novice class.
>
>
>
> In more than one way. Read some of the other crap he's posted on
> news:alt.engineering.electrical if you have a strong stomach.
>
>
Hmmm,
Prpbably wannabee ham came from CB crowd when Morse code requirement was
dropped.
Tony Hwang wrote:
>
> Hmmm,
> Prpbably wannabee ham came from CB crowd when Morse code requirement was
> dropped.
Who knows? Wherever he came from, I don't see him on this computer.
All I know is that I finally kill filed him on this computer after I got
tired of reading his 'twilight zone' electrical & electronics babble. I
am a former radio & TV broadcast engineer, and if I followed his or
_wacko_tom's warped ideas, I would have had millions of dollars worth of
damage. I had a studio building and STL tower in Leesburg Florida hit
by a direct strike. It blew chunks of concrete from the building where
the rebar and threaded rods ran vertical. It WAS an excellent example
of _wacko_tom's UFER ground, before the steel vaporized inside damp
concrete. 95% of the damage was caused by the EMP. I lost the 11 GHz
Cars band STL, the 1A2 type phone system, all the computer terminals,
and had some minor problems with other electronics. It turned out that
the dead terminals all had high ESR electrolytics, and that they were
working because they were all on UPS before the strike took out all the
electricity. The power 1A2 supply needed some of the weird WE fuses,
one KTU card and was back in service. The STL was mounted on the tower
in a steel NEMA box, and lost the LO module. It was 20 years old, and
at least 10 years obsolete, so it needed that module updated, anyway.
I started with the phones, then arranged a twice a day courier form
the studio to the transmitter site with U-matic tapes. We rented a STL
transmitter and shipped the damaged system to the OEM for repair &
upgrading. The terminals were down for a day, while I waited for the
new electrolytics. Or viewers didn't even know we had been hit. Then I
moved the microwave racks to a closet in the corner of the building, and
used 4" EMT between the rack and the tower. That was 20 years ago. They
have had strikes since then, but no problems.
Re: Surge / Ground / Lightning 
Linear Mode
