1. LVDT & RVDT End of World War II

2. Linear Variable Differential Transformer(LVDT)

3. PRECISION ABSOLUTE VALUE CIRCUIT (FULL-WAVE RECTIFIER)

4. LVDT & RVDT Comparison LVDT Measurement ranges are ±100µm to ±25cm Sensitivity is 2.4mv per volt per degree of rotation Input voltages are from 1V to 24V RMS, with frequencies 50Hz- 0kHz RVDT Typical RVDTs are linear over a range of about ±40º Sensitivity is 2 to 3mV per volt per degree of rotation Input voltages in the range of 3V RMS at frequencies between 400Hz and 20kHz.

5. Advantages Infinite Resolution High accuracy and sensitivity Excellent linearity ( 0.5%) A wide variety of measurement ranges LVDT

6. Application Modern Machine-tool Robotics Avionics & aircraft Process control industry Torpedo, and weapons systems.