EFFECT OF NOISE ON TRANSMISSION PERFORMANCE OF TELEPHONE CIRCUITS DUE TO THYRISTOR-CONTROLLED TRACTION

The question of how far the growing use of thyristor controlled railway traction affects telephone transmission quality due to induced noise voltages was investigated by performing a practical experiment. A demonstration was arranged whereby 30 persons had to assess the quality impairment by means of listening tests. The test conditions are described and as a general result it can be stated, that the CCITT limit for the permissible noise e.m.f. of 1 mv has to be retained unchanged.

• Supplemental Notes:
  • This paper was presented at the IEEE's First Symposium and Technical Exhibition on Electromagnetic Compatibility held at Montreux, Switzerland, May 20-22, 1975.
• Corporate Authors:

  Institute of Electrical and Electronics Engineers (IEEE)

  3 Park Avenue, 17th Floor
  New York, NY  United States  10016-5997
• Authors:
  • Hannig, R
• Conference:
  • Institute of Electrical and Electronics Engrs Proc
• Publication Date: 1975

Media Info

• Pagination: p. 402-406

Subject/Index Terms

• TRT Terms: Inductive interference; Solid state devices; Telecommunications; Thyristors
• Uncontrolled Terms: Propulsion systems
• Old TRIS Terms: Solid state
• Subject Areas: Railroads;

Filing Info

• Accession Number: 00148304
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM