Thread: Ground
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Old April 19th 12, 03:52 AM posted to rec.radio.amateur.antenna
tom tom is offline
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First recorded activity by RadioBanter: May 2009
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Default Ground

On 4/18/2012 8:24 AM, Ian wrote:
"Szczepan wrote in message
...
". In electronic circuit theory, a "ground" is usually idealized as an
infinite source or sink for charge, which can absorb an unlimited amount
of current without changing its potential. Where a real ground connection
has a significant resistance, the approximation of zero potential is no
longer valid. Stray voltages or earth potential rise effects will occur,
which may create noise in signals or if large enough will produce an
electric shock hazard.
The use of the term ground (or earth) is so common in electrical and
electronics applications that circuits in portable electronic devices such
as cell phones and media players as well as circuits in vehicles such as
ships, aircraft, and spacecraft may be spoken of as having a "ground"
connection without any actual connection to the Earth. This is usually a
large conductor attached to one side of the power supply (such as the
"ground plane" on a printed circuit board) which serves as the common
return path for current from many different components in the circuit."
From: http://en.wikipedia.org/wiki/Ground_(electricity)

There is wrote that all of your transmitter have "a "ground" connection
without any actual connection to the Earth."

Each transmitter needs " an infinite source or sink for charge".

The above you know.

But some of you do not know that where the voltage is there is the field
electron emission. So the sink is necessary.

It must not be infinite. "a large conductor" absorb the electrons from the
air. So its size must be adequate to the emission.

Nice Fun.

S*


Ah - so there still are some articles in Wikipedia that lack technical
accuracy. The quote above demonstrates poor use of the word "ground" and
that's caused Szczepan to misunderstand.

Regards, Ian.



Several replies convinced me to unPLONK him.

He is amusing and either doesn't get the responses or doesn't care. Or
maybe he _can't_ care.

tom
K0TAR