LVDT & RVDT Inductive Position Sensor Excitation Frequency & Synchronous Phase-Shift Tuner

Deterministic Mutual-inductance differential transformer complex transfer V_sec/V_pri(jw) + synchronous phase-sensitive multiplication V_dc = V_pk*cos(phi_err) & ratiometric (Va-Vb)/(Va+Vb) thermal invariance engine (.json, .csv, .sp) built for TE Measurement Specialties, Analog Devices (AD698), Texas Instruments (PGA970), Sensata — zero-upload ephemeral Wasm RAM execution.