In [[EM.Libera]], you can define simple lumped elements in a similar manner as gap sources. In fact, a lumped element is equivalent to an infinitesimally narrow gap that is placed in the path of the current, across which Ohm's law is enforced as a boundary condition. You can define passive RLC lumped elements or active lumped elements containing a voltage gap source. The latter case can be used to excite a wire structure or metallic strip and model a non-ideal voltage source with an internal resistance. [[EM.Libera]]'s lumped circuit represent a series-parallel combination of resistor, inductor and capacitor elements. This is shown in the figure below:
[[Image:Info_icon.png|40px]] Click here to learn more about '''[[Modeling_Lumped_Elements,_Circuits_%26_Devices_in_EM.CubePreparing_Physical_Structures_for_Electromagnetic_Simulation#Defining_Lumped_Elements_in_EM.Picasso_.26_EM.Libera Modeling_Lumped_Elements_in_the_MoM_Solvers | Defining Lumped Elements]]'''.
[[Image:Info_icon.png|40px]] Click here for a general discussion of '''[[Modeling_Lumped_Elements,_Circuits_%26_Devices_in_EM.Cube#Linear_Passive_Devices | Linear Passive Devices]]'''.