where to find metal oxide varistor (mov) i simulink in matlab

In MATLAB Simulink, there is no specific block available for a Metal Oxide Varistor (MOV) component. However, you can model a MOV using existing Simulink blocks and mathematical operations.

Here are the steps to model a MOV in Simulink:

1. Open Simulink and create a new model.
2. Add a voltage source block to represent the input voltage to the MOV.
3. Add a comparator block to compare the input voltage against a threshold voltage. The threshold voltage will determine when the MOV starts conducting.
4. Add a switch block or a relay block next to the comparator block. This block will represent the MOV's behavior of opening or closing the circuit based on the comparator's output.
5. Connect the output of the switch block to the rest of your circuit, representing the MOV's effect on the circuit.

By adjusting the parameters of the voltage source, comparator, and switch blocks, you can customize the model to simulate the behavior of a MOV. Note that this approach is an approximation and behavioral model for the MOV, rather than a physically accurate representation of the component.

It is also worth mentioning that Simulink provides a wide range of other electrical components and models. So, if you are looking for other components or models, the Simulink library can be a good starting point to find those.