Energy in a signal: Difference between revisions
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===Energy of a Signal=== |
===Energy of a Signal=== |
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From circuit analysis we know that the power generated by a voltage source is, |
From circuit analysis we know that the power generated by a voltage source is, |
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: <math>P(t) = |
: <math>P(t) = {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, |
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: <math>W = \int_{-\infty}^\infty | |
: <math>W = \int_{-\infty}^\infty |V|^2(t) \, dt</math> |
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Revision as of 20:05, 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 circuit analysis we know that the power generated by a voltage source is,
Assuming that R is 1 then the total energy is just,
This page is far from complete please feel free to pick up where it has been left off.