Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [simulation]

About tools to simulate circuits. Specify the tool used.

Simulations use mathmatical models to predict the behaviour of a circuit. The Wikipedia article is a good starting point to learn more. This tag should be used for questions related to circuit simulation tools (software).

Questions specifically about the popular SPICE simulator, or one of its many descendant , should also be tagged .

Typically circuits are described to the simulator in either a text file (like a SPICE netlist) or as a graphical .

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What are the freeware SPICE simulators available?

Does anyone know of a freeware SPICE / circuit simulator? SPICE (Simulation Program with Integrated Circuit Emphasis) is a general-purpose, open source analog electronic circuit simulator. It is a powerful program that is used in integrated…
Edward
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How do Circuit Simulators actually work?

I recently had the opportunity to play around with LiveWire, which is a circuit simulator and began wondering how exactly they computed the voltages across each component and the current going through each track of wire. I have only been taught…
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Free circuit simulator for educational purposes

I am looking for a free circuit simulator for educational purposes. My requirements are: Visual ("draw a circuit diagram, click simulate") It should contain light bulbs as circuit components such that 2.1. They become (visually) brighter if you…
student
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Comparison Between SPICE Simulators

I've recently realized that I can't do everything easily in ngspice, mainly because analysis has to be performed through the interpreter. I'm considering switching to a new SPICE simulator. I'd like a list the advantages and disadvantages of the…
sj755
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LTspice: Vary a resistor's value over time

I want to simulate the load regulation of a power-supply. I'm sure I remember being able to vary the value of a resistor over the course of a simulation in LTspice, but I can't remember how. Anyone?
volting
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What do HDLs compile/synthesize to?

I'm a software engineer. As a programmer, I have an understanding of what my compiler does for me because I've manually written a close textual representation of what it outputs (e.g. assembly). For precise details of what's output I can look at the…
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How are circuits which use complex ICs normally simulated?

I understand that it is common practice in electronic design to simulate a circuit in some spice program before building it. Sometimes a project requires the use of complex ICs, for instance an IC which performs charge control for a Li-Po battery or…
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How do I learn HDL

I have a course in Digital Design in this semester and just love it. Now I know that most of the work in embedded system and digital design is done on computer simulators first and then implemented using hardwares. So I was wondering how should I go…
Rick_2047
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LTspice automation

I have a battery-powered boost converter and I'm attempting to measure the maximum input (battery) voltage droop under various load conditions of high current draws (different duty-cycles/periodicities) in addition to over several battery types…
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SPICE Simulator at Linux

What is the better choice to get opensource SPICE simulator on Linux? I am fan of Proteus (Windows) is there any alternative like it?
user17904
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Mathematical models for vacuum tubes?

Are there any commonly accepted algebraic models for vacuum tube operation (triode, tetrode, and pentode)? In the same way that BJTs have a Gummel-Poon or Ebers-Moll model, and (macroscale) MOSFETs have a cutoff/linear/saturation algebraic model,…
compumike
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Simple Circuit Simulation tutorial

For the last few days I have been trying without any luck to find a good tutorial on simple circuit simulations. I am a relatively new hobbyist and I figure if I use simulations and play around the circuit and see the output I would learn more. Can…
Rick_2047
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How to plot current in ngspice?

I wish to plot out the current and power in ngspice. In the case of voltage, for example, if I wanted to plot the voltage at node 1 I would use: plot v(1) Problem is, when I try i(1), the vector isn't recognized. Could someone provide a few…
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Free RF Simulation Software

What free tools are there to simulate RF circuits?
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Does an ideal capacitor dissipate power?

On several circuit simulators I have seen capacitors with a "Power" figure. Also, I have wondered how capacitive power supplies work. Does an ideal, zero resistance, zero leakage, zero inductance capacitor dissipate any power? See image: Link to…
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