Durable LVDTs ideal in new gage applications

The linear variable-differential transformer (LVDT) can produce electrical output in proportion to the displacement of its core. Voltages of opposite polarity are produced from two secondary coils as the primary coil is energized by an AC source. Moving the core into different positions increases or decreases the voltage production. The benefits of LVDT in electronic gages include perpetual mechanical life and absence of friction.