Energy in a signal: Difference between revisions
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===Energy of a signal=== |
===Energy of a signal=== |
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From circiut analysis we know that the power |
From circiut analysis we know that the power generated by voltage source is, |
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: <math>P(t) = {\mathbf{V}^2(t) \over R}</math> |
: <math>P(t) = {\mathbf{V}^2(t) \over R}</math> |
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Assuming that R is 1 then the total energy is just, |
Assuming that R is 1 then the total energy is just, |
Revision as of 20:46, 10 October 2006
Definition of Energy
Energy is the ability or potential for something to create change. Scientifically energy is defined as total work done by a force. Work can be mathematically calculated as the line integral of force per infinatesimal unit distance,
Power represents a change in energy.
This means we can also write energy as
Energy of a signal
From circiut analysis we know that the power generated by voltage source is,
Assuming that R is 1 then the total energy is just,
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