Power line carrier noise elimination

Details Power line carrier noise elimination Power line carrier noise elimination

1976-12-22

1978-12-19

Shoop, William M.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

328167, 340310A, H02M 112

Patent

active

041308611

ABSTRACT:
A method and apparatus are provided for eliminating noise signals from power transmission lines utilized for transmitting information signals in power line carrier systems. Use is made of the principle that signals transmitted line-to-ground are more severely attenuated than signals transmitted line-to-line. Capacitive impedance is selectively added to the system to effect coupling of the noise signals to the transmission lines in a line-to-ground mode.

REFERENCES:
patent: 3204245 (1965-08-01), Dykaar
patent: 3287722 (1966-11-01), Craig
patent: 3332000 (1967-07-01), Greening et al.
patent: 3388389 (1968-06-01), Henriques
patent: 3924223 (1975-12-01), Whyte et al.

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