Transducer Assembly with Digitally Created Signals

A method of operating a position sensor, comprising:

• operating a programmable processor according to a stored program to produce a first waveform based on said program, wherein said first waveform is a square wave produced by a first instruction of said program to produce a rising edge of the square wave, and a second instruction of said program to produce a falling edge of the square wave;
• low pass filtering all but a fundamental frequency of said square wave to produce a substantially pure sine wave;
• using said sine wave to drive a position sensor;
• and
• using said processor to produce an inversion waveform that selectively inverts an output of the position sensor, at a timing having a specified phase relationship with said first waveform.

A method of operating a transducer, comprising:

• using a digitally controllable processor producing a phase inversion signal for a differential transducer,
• wherein said digitally controllable processor creates a square wave to execute a first instruction to produce a rising edge, and a second instruction to produce a falling edge,
• low pass filtering all but a fundamental frequency of said square wave to produce a filtered wave;
• and
• using said digitally controllable processor to invert an output of the differential transducer at a timing that is synchronized and phase shifted relative to said phase inversion signal, by executing instructions which wait a time amount that is based on said phase shift after a first detection made by said digitally controllable processor, to create a signal that inverts said output.