Comments on: An Ideal Operational Amplifier Simulation Model https://masteringelectronicsdesign.com/an-ideal-operational-amplifier-simulation-model/ Electronics Design and Modeling with Emphasis on Analog Design Tue, 23 Nov 2010 03:49:33 +0000 hourly 1 By: Adrian S. Nastase https://masteringelectronicsdesign.com/an-ideal-operational-amplifier-simulation-model/#comment-2768 Fri, 19 Nov 2010 06:11:16 +0000 http://masteringelectronicsdesign.com/?p=1579#comment-2768 In reply to Lutz von Wangenheim.

Hi Lutz, thank you for this idea. I plan to write more about circuit simulation, so yes, these articles can be posted under such a category.

]]> By: Lutz von Wangenheim https://masteringelectronicsdesign.com/an-ideal-operational-amplifier-simulation-model/#comment-2062 Mon, 08 Nov 2010 07:16:29 +0000 http://masteringelectronicsdesign.com/?p=1579#comment-2062 Hi Adrian,
may I suggest something to you?
For my opinion, it would be a good idea to create a new “category” called “circuit simulation” in which some specific simulation problems are presented resp. discussed (errors, misinterpretations of simulation results).
For example: What happens when unintentionally the resistive feedback of an opamp is connected to the non-inverting input? I am afraid, the program will compute a stable bias point – and very often the user will not detect his error. Even the ac analysis will give a reasonable magnitude response.
Some other points of interest could be (a) the meaning of the feature “cancel initial bias point” and (b) the reason for convergence problems (and what to do against it) or (c) some hints for correct loop gain simulation (phase margin of a control system with feedback).
Regards
Lutz

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