Power line carrier apparatus

Details Power line carrier apparatus Power line carrier apparatus

1978-07-24

1980-05-27

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Series connected sections with faulty section disconnect

340310A, 361 64, 375 7, 375 41, H02H 720

Patent

active

042053609

ABSTRACT:
Power line carrier apparatus of the on-off type, including a local transmitter and receiver coupled to a transmission line for communication with a remote station. An adjustable attenuator, located between the transmission line and the bandpass input filter of the receiver, is responsive to the condition of the local transmitter. The attentuator functions as a signal equalizer, presenting a greater impedance to signals supplied to the input filter when the local transmitter is operating, than when it is not.

REFERENCES:
patent: 2594371 (1952-04-01), Ward
patent: 3117241 (1964-01-01), Paynter et al.
patent: 3327215 (1967-06-01), Battin et al.
patent: 3626297 (1971-12-01), Green et al.
patent: 3656112 (1972-04-01), Paull
patent: 3942168 (1976-03-01), Whyte
patent: 4054837 (1977-10-01), Hibbs, Jr. et al.
patent: 4055807 (1977-10-01), Priniski et al.

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