Signal regenerating circuit with improved input-output isolation

Details Signal regenerating circuit with improved input-output isolation Signal regenerating circuit with improved input-output isolation

1979-06-18

1981-10-27

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 328164, H03K 501

Patent

active

042975956

ABSTRACT:
Digital signals are applied to an ungrounded transmission line through a two channel system, one channel being operative in response to a binary "1" the other in response to a binary "0." Each channel, when active, receives high frequency oscillations through a transformer. One side of the transformer is connected to the emitter-collector circuit of a transistor constituting a main rectifier. A buffer transistor has an emitter-collector circuit connected in series with the main rectifier transistor. A rectifier diode connected to the secondary winding of the transformer furnishes a DC signal to switch the buffer transistor to the conductive state only when high frequency oscillations appear across the secondary winding, that is when the channel is active. A high frequency filter between the main rectifier transistor and the buffer transistor prevents high frequency oscillations from reaching the output.

REFERENCES:
patent: 3402304 (1968-09-01), Burke
patent: 3612895 (1971-10-01), Niedra
patent: 3737585 (1973-06-01), Ghosh

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