James John Laforest
Engineers at Western Pkwy, Schenectady, NY
License number
Colorado 16308
Issued Date
Jun 21, 1979
Renew Date
Nov 19, 1985
Expiration Date
Nov 19, 1985
Type
Professional Engineer
Address
Address
59 Western Pkwy, Schenectady, NY 12304
Professional information
Power Line Carrier Noise Elimination
US Patent:
4130861, Dec 19, 1978
Filed:
Dec 22, 1976
Appl. No.:
5/752932
Inventors:
James J. LaForest - Schenectady NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
H02M 112
US Classification:
363 39
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.