Getting Started with LTspice

Contributors: LightningHawk

Creating a New Model

There are several steps to create your own model in LTspice. A model consists of a subcircuit and a symbol. For an example, we are going to build a model for a potentiometer. It will be based off the SparkFun 10k trimpot. A few months ago I designed a soldering kit for personal use based off the 555 timer. LTspice does not come with a standard potentiometer so we will build one. Most of the time simulating a trim-pot as a resistor is fine. But I plan on giving this kit to new students of electronics and want them to understand the difference between a resistor symbol and its use and a potentiometer symbol and how it is used in this circuit.

See the video below to create your own potentiometer model in LTspice.