Variable differential transformer for position monitoring

An electronic position sensor comprising:

• a signal generator configured to generate one or more excitation signals;
• a variable differential transformer configured to receive the one or more excitation signals from the signal generator, the variable differential transformer including:
• a primary coil connected to the signal generator;
• a plurality of secondary coils connected to a core, the core proximate the primary coil;
• and
• a phase modulator connected to the variable differential transformer;
• wherein the primary coil, the plurality of secondary coils, and the core are disposed at least partially in a magnetic field generated via the primary coil and the one or more excitation signals;
• movement of the core in the magnetic field generates a plurality of secondary signals in the secondary coils;
• the phase modulator is configured to output a single output signal;
• and a phase of the single output signal corresponds to a position of the core.