Patent ID: 6778922
Filing Date: 2004-08-17
Classification: H03M

Abstract:
A device for converting 3-phase analog signals to digital angles, the device comprising:first and second differential amplifiers, the first differential amplifier being coupled to receive and compare a first and a second of the 3-phase analog signals, and the second differential amplifier being coupled to receive the second and a third of the 3-phase analog signals; analog-to-digital (A/D) conversion circuitry coupled to receive an output of the first and second differential amplifiers; and a computer processor structured to receive an output of the A/D conversion circuitry and a digital reference waveform input, the computer processor being structured to operate an algorithm for converting the output of the A/D conversion circuitry to an angle, wherein the computer processor is further structured to operate the algorithm under the control of the digital reference waveform input signal.