Difference between revisions of "Dictionary:Linear system"

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<b>1</b>. A system whose output is linearly related to its input. If a linear system is excited by a sine wave of frequency ''f''<sub>1</sub>, the output will contain only the frequency ''f''<sub>1</sub>; the amplitude and phase may be changed, however. The <b>rule of scaling</b> (if ''A'' results in ''B'', then ''kA'' results in ''kB, k'' being any constant) and the <b>rule of superposition</b> (if ''A'' results in ''B'' and ''C'' results in ''D'', then ''A''+''C'' results in ''B''+''D'') apply. <b>2</b>. An electrical circuit whose impedance is independent of applied voltage (or current).
 
<b>1</b>. A system whose output is linearly related to its input. If a linear system is excited by a sine wave of frequency ''f''<sub>1</sub>, the output will contain only the frequency ''f''<sub>1</sub>; the amplitude and phase may be changed, however. The <b>rule of scaling</b> (if ''A'' results in ''B'', then ''kA'' results in ''kB, k'' being any constant) and the <b>rule of superposition</b> (if ''A'' results in ''B'' and ''C'' results in ''D'', then ''A''+''C'' results in ''B''+''D'') apply. <b>2</b>. An electrical circuit whose impedance is independent of applied voltage (or current).
 
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Latest revision as of 18:02, 26 August 2017

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1. A system whose output is linearly related to its input. If a linear system is excited by a sine wave of frequency f1, the output will contain only the frequency f1; the amplitude and phase may be changed, however. The rule of scaling (if A results in B, then kA results in kB, k being any constant) and the rule of superposition (if A results in B and C results in D, then A+C results in B+D) apply. 2. An electrical circuit whose impedance is independent of applied voltage (or current).