Over the years, research on passive components or devices in the industry has been lacking. Instead focus has been on IC design, and as a result, the field of IC design has been heavily researched. Though significant gains have been made via semiconductor technology, it is becoming increasingly difficult to achieve further gains due to the exponential nature of the efficiency curve, and the physical limitation of component size. Previously neglected, contributions to power losses from passive components can no longer be overlooked, thus, ways of mitigating them must be discovered. In electrical engineering, passive devices, or components as they are sometimes referred to, are incapable of controlling current using another electrical signal. These components use energy in different ways, such as storing and dissipating, to do work, and cannot generate energy nor amplify a signal. The most common passive electronic components are resistors, capacitors, and inductors, whose fundamental elements are resistance, capacitance, and inductance. In mechanical engineering similarly, three fundamental physical elements make up a mechanical system, namely inertia elements, springs, and damper/dashpot. These two separate disciplines of engineering are connected via the technique of analogies, useful when comparing an unfamiliar system with a familiar one. This research utilizes the well-researched transformer model, a passive device, to develop the model for two other passive devices within the mechanical engineering field, the spur-gear pair and magnetic coupling model, via analogies. Theoretically it is possible to compare their fundamental elements, resulting in the development of a novel technique that combines the well-known techniques, two-port network descriptions and block diagrams to model and characterize these three (3) passive systems. By extending the definitions proposed and analogies, one should be able to apply this method to any passive system, thus successfully estimating the optimal working condition of the system if the system can be characterized as two-port network descriptions.

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