Communications: electrical – Systems – Selsyn type
Patent
1981-01-26
1984-11-06
Groody, James J.
Communications: electrical
Systems
Selsyn type
323361, H04B 354
Patent
active
044815018
ABSTRACT:
A communication signal is coupled simultaneously to all three phases of a three-power line through a three-phase open delta transformer with the communication signal being applied across the low voltage pair of windings.
REFERENCES:
patent: 1839301 (1932-01-01), Duncan
patent: 2319633 (1943-05-01), Roseby et al.
patent: 2647253 (1953-07-01), Mackenzie et al.
patent: 4065763 (1977-12-01), Whyte et al.
Greenberg Howard R.
Groody James J.
Hamann H. Fredrick
Rockwell International Corporation
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