Communications: electrical – Systems – Selsyn type
Patent
1986-06-17
1988-08-23
Caldwell, Sr., John W.
Communications: electrical
Systems
Selsyn type
340310R, H04B 356, H04B 354
Patent
active
047664142
ABSTRACT:
A tuned circuit is provided for connection to a transmitter of a power line communication system. The tuned circuit comprises components selected to provide a low impedance path to ground for a power line communication signal of a preselected frequency. When the transmitter is not in the process of transmitting a power line communication signal, it causes a shorting switch to be closed which shorts a secondary winding of a transformer of the tuned circuit. Therefore, during periods of time when the transmitter is not transmitting power line communication signals, spurious signals on the power line are diverted to ground and not permitted to travel to remote receivers connected to the power line distribution system.
REFERENCES:
patent: 2385673 (1945-09-01), Woodworth
patent: 3846638 (1974-11-01), Wetherell
patent: 4032911 (1977-06-01), Melvin
patent: 4065763 (1977-12-01), Whyte et al.
patent: 4130874 (1978-12-01), Pai
patent: 4142178 (1979-02-01), Whyte et al.
patent: 4188619 (1980-02-01), Perkins
patent: 4254402 (1981-03-01), Perkins
patent: 4355303 (1982-10-01), Phillips et al.
patent: 4379284 (1983-04-01), Boykin
patent: 4427968 (1984-01-01), York
patent: 4467314 (1984-08-01), Weikel et al.
patent: 4573170 (1986-02-01), Melvin et al.
patent: 4602240 (1986-07-01), Perkins et al.
IEEE Transactions on Power Delivery, No. 7, 1/87, K. W. Whang.
Caldwell Sr. John W.
Hawzanko G.
Holloway III Edwin C.
Westinghouse Electric Corp.
LandOfFree
Power line communication interference preventing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power line communication interference preventing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power line communication interference preventing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-838017