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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: I know it's hard to grasp but... posted by Tweekeng on April 27, 2012 at 18:50:17:
That means that the energy consumed by the turning the light bulb on is mysteriously being replaced and being sent back to the power plant. Perpetual motion and endless energy consumption is forbidden by the Laws of Thermodynamics.By your statement, if I were to turn on all my appliances in my home, including my AC, my bill should not change.
That would be great news to all homeowners and factory owners if that were true. It simply isn't.
Again you are confusing AC voltage with current flow, they are not the same. A better analogy would be a, say, a ten foot cord attached to a point and held at the other end. Simply pushing the held end would be be the equivalent of DC voltage, the cord will not move ten feet away. Whipping the held end will develop a wave like motion and move down the length of the cord: that's AC voltage. It really is different from current flow. Perhaps another analogy may be helpful: take the ocean. You can have a huge tidal movement which is covered with waves. Even if the tide goes out, the wave action is still present, same with actual movement of electrons.
Remember that all audio analogue signal is AC. You're not going to tell me that current flow is not important: in fact, many manufacturers of amplifiers are rather proud of the amount of current they can dump. By your statement the ground return of any amplifier or preamplifier or speaker will show absolutely no current loss. Quite obviously there is, as speakers convert current into heat and motion, output transistors and tubes convert current into heat and increased current rates. The only difference between analogue AC voltage and your power line voltage is that one is constant and the other is always changing.
Stu
PS; What is a watt? A watt is defined as voltage times amperage. If you hold voltage constant, the loss is in amperage.
Edits: 04/30/12
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