Transformerless hybrid circuits

Details Transformerless hybrid circuits Transformerless hybrid circuits

1979-02-26

1981-07-14

Wolff, John H.

179 251, 179 77, H04B 158

Patent

active

042788471

ABSTRACT:
An electronic hybrid for coupling a two-wire line to a four-wire line and having a two-wire port adapted to be connected to the two-wire line, separate receive and transmit ports adapted to be connected to said four-wire line, means for coupling signals received at said two-wire port to said tramsmit port, and a circuit connected to said receive and two-wire ports and including a pair of constant current sources for driving the two-wire line that is connected to said two-wire port in response to a signal imposed on said receive port.

REFERENCES:
patent: 3035122 (1962-05-01), Livingstone
patent: 3601538 (1971-08-01), May et al.
patent: 3909559 (1975-09-01), Taylor
patent: 3916110 (1975-10-01), Lee et al.
patent: 3955052 (1976-05-01), Orbach
patent: 4041252 (1977-08-01), Cowden
patent: 4064377 (1977-12-01), Regan
patent: 4142075 (1979-02-01), Olschewski

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