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Now LT spice knows what you're talking about when you start writing your scripts. We comment the first SPICE directive line and uncomment the second line. To understand the LTspice Model Parameters of Components we shall first understand the .param directive used in LTspice simulation software. Would the magnetic fields of double-planets clash? This is not what OP is asking about. For the types of analysis, please see the following article. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. D: Place diode. It is performed simultaneously with transient analysis, AC analysis, DC sweep analysis, etc. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? You should see ".step param R2 100 400 100" at the bottom of the screen. The command .step performs parameters sweeps. For instance, the forward voltage of a diode will change over different temperatures, the VBE of transistors, the RDSon of MOSFET and so on. I would for example like to increase some capacitor and decrease the stimulus volrtage source simultaniously. flower arranging classes northern virginia. Refer to the following article for the detailed setting method of the signal source. LTSpice: Step multiple parameters simultanious | CO.UK edaboard.com Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? If I don't use the index in the tables I get the same error as indicated in the first post, The working solution was found after reading I've done the trick with the Component Attributes dialogue on both components already. LTspice is a powerful and widely used SPICE simulation application. L: Place inductor. 3: R1 = 1 k\$\Omega\$, R2 = 1 M\$\Omega\$. LTSpice for Windows introductory tutorial The circuit It was used in class, and it is a nice example of a circuit that can be handled using node-voltage, mesh-current, or superposition techniques. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Click SPICE Directive on the toolbar to display Edit Text on the Schematic screen. It's important to have all .step commands in one text box. Something like It only takes a minute to sign up. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I need to try a large number of different combinations of parameter values (I have 5 parameters, each of them can take anywhere from 3 to 10 values, for a total number of combinations up to 5000). LTspice-DC Sweep Analysis(.dc) | Spiceman Thanks for weighing in! The PARAM R can be referenced in a component value usng {R} notation. You've likely already given it a value, eg 1k0. High Side Current Sense Amplifier with Reference and Comparator. This time, we set up transient analysis to be performed simultaneously with parametric analysis. In this article, we will explain in detail the parametric analysis(.step) method in LTspice. What sort of strategies would a medieval military use against a fantasy giant? MathJax reference. The best answers are voted up and rise to the top, Not the answer you're looking for?