Communications: electrical – Systems – Selsyn type
Patent
1976-02-26
1977-06-28
Caldwell, John W.
Communications: electrical
Systems
Selsyn type
178 58A, 178 71N, 325 5, 340310R, H04M 1104
Patent
active
040329119
ABSTRACT:
A half-duplex communication repeater for use with power distribution lines. The repeater includes two receivers, two signal generators, a single power amplifier, and a control circuit. The control circuit coordinates the operation of the receivers and the signal generators and prevents the application of the signals from both generators simultaneously to the signal amplifier. The outputs of the two signal generators are applied to transmission gates which are both coupled to the signal amplifier. When an appropriate signal is detected by one receiver, it produces an output signal which is coupled to a latching circuit. The latching circuit turns on the appropriate transmission gate to pass the signal from the corresponding signal generator to the signal amplifier. Due to the operation of the latching circuit, a signal detected simultaneously by the other receiver will not cause the other transmission gate to turn on and apply two signals simultaneously to the signal amplifier. A third transmission gate may be coupled to the common output connections of the other two transmission gates for providing a load on the gate devices to reduce the signal transfer through the gate devices when they are in the turned-off condition.
REFERENCES:
patent: 2385673 (1945-09-01), Woodworth
patent: 3875332 (1975-04-01), Fletcher et al.
patent: 3962547 (1976-06-01), Pattantyus-Abraham
patent: 3967059 (1976-06-01), Moore et al.
patent: 3973087 (1976-08-01), Fong
Caldwell John W.
Groody James J.
Lackey D. R.
Westinghouse Electric Corporation
LandOfFree
Signal repeater for power distribution line communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal repeater for power distribution line communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal repeater for power distribution line communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524558