A phase-shifting transformer
- 1 September 1934
- journal article
- Published by IOP Publishing in Journal of Scientific Instruments
- Vol. 11 (9) , 289-295
- https://doi.org/10.1088/0950-7671/11/9/307
Abstract
A design is given for a phase-shifting transformer suitable for use at audio frequencies. The associated apparatus used with two of these instruments is described. Cathode-ray oscillograms showing a set of straight lines illustrating amplitude constancy with phase shift are included. A method is described for the calibration of the phase-shifting transformers using the cathode-ray oscillograph but without the use of measurement of phase angle from the shape of an ellipse. Calibration curves for frequencies of 800 and 4000 are given and discussed.Keywords
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