A new principle is employed for 60-cycle A-C network analyzers
Evan Phillips · Transactions of the American Institute of Electrical Engineers Part I Communication and Electronics · 1952
Through the use of a new principle, the impedance-phase-shift, the weight of the reactor elements of a 60-cycle a-c network analyzer has been reduced to a value lower than that obtainable in designs employing medium-frequency 500-cycle zone, and approximately equal to those employing high-frequency 10,000-cycle zone. The reactors have an X-R ratio of infinity in terms of system measurements. Among other advantages gained by the use of standard, power frequency is the elimination of the special-type motor-generator unit to supply power to the analyzer. Power is supplied through constant-voltage magnetic-stabilizing type transformers.