Title :
Note on a Cause of Residual Hum in Rectifier-Filter Systems
Author :
Terman, Frederick Emmons ; Pickles, Sidney B.
Author_Institution :
Stanford University, California
Abstract :
The capacitance of the power transformer secondary to ground is shown to by-pass the filter system when the filter chokes are in the negative lead and the negative output is grounded. This results in a residual ripple voltage across the output that may be greater than the ripple voltage passed by a very good filter. The remedy is either to place the filter inductance in the positive lead or to ground the positive output terminal.
Keywords :
Capacitance; Filtering; Filters; Grounding; Impedance; Inductance measurement; Inductors; Power transformers; Rectifiers; Voltage;
Journal_Title :
Radio Engineers, Proceedings of the Institute of
DOI :
10.1109/JRPROC.1934.226766
