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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: I hope you don't tell that to a "Ham" operator... posted by Tony Montana on June 30, 2004 at 23:05:46:
...that earth ground is irrelevant.In case you hadn't noticed, we're not talking about HAM radios and terrestrial radio broadcasting systems.
He/she will tell you that grounding their system (especially antenna) to a ground rod make their system much quieter...
Actual earth ground is of importance to them because their terrestrial antennas often use the earth as the antenna's ground plane in which case the transmitter's ground needs to be at the same potential.
Tell me, how do figure aircraft, satellites, space probes, the space shuttle, the space station, etc. manage radio communications without an earth ground?
This is of absolutely no relevance in an audio system.
...and shield the system from outside noise by proving a short to ground.
And in an audio system, "ground" is the circuit's internal ground reference, not actual "earth" ground. And that's the ground that the shield needs to be connected to to prevent the shield from electrostatically coupling to the circuit. Earth ground again is irrelevant.
Earth ground neutralize the noise same way it naturalize lightning that hits it.
No, it doesn't. You're talking apples and oranges here. Lightning is an electrostatic discharge.
Why do you think planet earth have a magnetic field around it.....it is because earth is conductive :)
No, the earth has a magnetic field (which is diminishing by the way) not because the earth is conductive, but because it has a molten core made of iron.
I'm sorry, but you do indeed have a rather profound misunderstanding about "ground."
se
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Follow Ups
- Re: I hope you don't tell that to a "Ham" operator... - Steve Eddy 23:57:25 06/30/04 (10)
- I suggest you read this article.... - Tony Montana 16:12:22 07/01/04 (5)
- Re: I suggest you read this article.... - Steve Eddy 19:30:13 07/01/04 (4)
- Steve, I just had a thought! - Tony Montana 15:38:58 07/02/04 (3)
- Re: Steve, I just had a thought! - Steve Eddy 17:08:30 07/02/04 (2)
- Ok, so we established that earth is conductive :) - Tony Montana 22:27:56 07/02/04 (1)
- Re: Ok, so we established that earth is conductive :) - Steve Eddy 23:54:56 07/02/04 (0)
- "earth has a magnetic field (which is diminishing by the way" - GTF 07:42:16 07/01/04 (3)
- Re: "earth has a magnetic field (which is diminishing by the way" - Steve Eddy 09:10:57 07/01/04 (2)
- Re: "earth has a magnetic field (which is diminishing by the way" - FLZapped 08:42:37 07/06/04 (1)
- Damn...there goes my cold fusion experiment..and the neighborhood...FLZ nt. - jneutron 06:35:37 07/07/04 (0)
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