Telegraphy – Systems – Printing
Patent
1974-04-18
1976-07-20
Safourek, Benedict V.
Telegraphy
Systems
Printing
250199, 250551, H04L 2502
Patent
active
039707849
ABSTRACT:
Transmission system provided with two communication units in a closed electric circuit, each unit consisting of a driver circuit and a receiver circuit each provided with optically coupled isolators to secure said system from the disadvantageous influences due to a common-mode voltage between said units.
REFERENCES:
patent: 2383788 (1945-08-01), Hanley
patent: 3808366 (1974-04-01), Wanamaker et al.
Berka George B.
Hollandse Signaalapparaten B.V.
Safourek Benedict V.
Trifari Frank R.
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