Title :
A carrier-current frequency-shift system for protection of transformer banks
Author_Institution :
General Electric Company. Syracuse, N. Y.
Abstract :
Using crystal-controlled frequency-shift techniques, this system provides fast operation with a high degree of reliablity. This discussion describes the design requirements and tells how they were met.
Keywords :
Crystals; Electron tubes; Noise; Radio transmitters; Receivers; Relays; Time frequency analysis;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1951.6436763
