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what happens to reflected energy ?
On Jul 8, 6:04*am, Keith Dysart wrote:
Consider the output terminals of a generator to be junction. Then the power delivered from the generator to the junction must exactly equal, at all times, the power taken from the junction by the load, since there is no storage in the junction. I will leave you with this parting thought. All that you are saying is that the power at one point (special case: away from any energy storage device) is the same as the power at another point in the same wire (special case: an infinitesimal distance away). No rational person would argue with you on that point. However, that is NOT a general case and in no way proves that power is conserved in general. It is simply a special case where there is a one-to-one correspondence between energy and power, something I pointed out earlier. The throw of a switch can cause power to be created or destroyed. The throw of a switch cannot cause energy to be created or destroyed. That's the basic conceptual difference between power and energy that you are missing. The same thing is true for current vs charge. In my energy articles, I took advantage of the special case of one-to- one correspondence between average energy and average power. You neglected to do that for your instantaneous power calculations and proved beyond any doubt that power is not conserved. Your own continuity equation posting indicated that you had erroneously omitted something important from your previous calculations. -- See y'all later, 73, Cecil, w5dxp.com |
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