A Digital Technique for the Measurement of Phase Angle

摘要

A digital technique for the measurement of phase angle is presented. Although the method is completely general, a particular model is designed here. The model is designed to measure in 100 microseconds the phase angle between two 250 kc input signals which range independently between 50 mv and 10 v rms in amplitude. The measurement is indicated electronically by means of sixteen parallel output signals and visually by means of four Nixie indicator lamps. This discussion also includes a statistical analysis of the effect of random noise on accuracy and an evaluation of a portion of the phasemeter which was actually built and tested. (Author)