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Linear time-invariant system: Revision history


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  • curprev 09:2509:25, 23 July 2021145.64.134.248 talk 36,690 bytes −312 The mention of a differential equation in this context is incorrect. Linearity merely means what is stated now. It is not true that any linear operator on a function space (which should anyway then be defined, in particular regarding differentiability of the functions in that space) is implemented by a differential equation or differential operator. A trivial counter example it the evaluation of a function in one point. undo Tags: nowiki added Visual edit

2 July 2021

  • curprev 20:4520:45, 2 July 2021Interferometrist talk contribs 37,002 bytes −123 →‎Overview: Removed unsourced (and I believe incorrect) statement I previously marked {{CN}} and no one tried to clarify let alone supply ref. undo
  • curprev 20:4220:42, 2 July 2021Interferometrist talk contribs 37,125 bytes −61 Undid revision 1031313399 by Alej27 (talk) Look, this is just a matter of symantics. Resistors/capacitors/inductors which substantially change their values (under normal operating circumstances) are NOT simply called resistors/capacitors/inductors, they have their own names, that's all. But when inadvertent it is a called "non-ideal" behaviour of a nominally linear component. undo Tag: Undo

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  • curprev 23:3823:38, 30 June 2021Alej27 talk contribs 37,182 bytes +61 Clarified. Not all resistors (R)/inductors (L)/capacitors (C) are LTI, as the article may incorrectly suggest. R/L/C that depend on time only are linear time-variant (LTV), e.g. tuning capacitors in radio receivers and potentiometers. R/L/C that depend on electrical/magnetic quantities (charge, current, voltage, magnetic flux linkage) are non-linear. undo Tag: Reverted
  • curprev 23:2223:22, 30 June 2021Alej27 talk contribs 37,121 bytes +758 Added image with reference about the statement in its caption. undo

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