Voltage-current phase-based method for linear and rotary transformer systems, and associated systems and methods

A transformer circuit configured to identify a position of an object or a change in the position, the transformer circuit comprising:

• an excitation signaling component configured to receive an excitation signal;
• a first signaling component including a first load;
• a second signaling component located away from the first signaling component and including a second load that is configured to cause a different delay in the excitation signal than the first load;
• and
• a core configured to move between first and second positions respectively corresponding to the first and second signaling components and according to the position of the object, the core configured to inductively couple the excitation interface to the first signaling component, the second signaling component, or a combination thereof according to the position of the object.

A method of identifying a position of an object or a change in the position, the method comprising:

• providing a periodic signal to an excitation signaling component;
• inductively coupling the excitation to a first load, a second load, or a combination thereof using a core configured to move between first and second positions according to a movement of the object, wherein the first and second positions correspond to the first and second loads;
• detecting a loaded signal at the excitation signaling component, wherein the loaded signal represents the periodic signal that has been changed according to the inductive coupling between the excitation signaling component and the first and/or second load according to a location of the core;
• and determining the position of the core based on a timing difference between the periodic signal and loaded signal.