Transformer coupled, solid state communications line switch

Details Transformer coupled, solid state communications line switch Transformer coupled, solid state communications line switch

1984-12-11

1986-10-28

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

370 85, 370117, 375 36, H04Q 300, H04J 302, H04J 300, H04B 300

Patent

active

046201874

ABSTRACT:
A plurality of signal coupling transformers and a plurality of solid state switches are used to insert and/or de-insert data terminal equipment (DTE) from a communications network. The solid state switches are controlled to short the output of selected transformers thereby allowing signals on the communications network to bypass the DTE and/or to be switched into the DTE. The DTE may also loop electrical signals from its output to its input.

REFERENCES:
patent: 2978592 (1961-04-01), Kilburn et al.
patent: 3328527 (1967-06-01), Miles
patent: 3458665 (1969-07-01), Markey
patent: 3597733 (1971-08-01), Foxwell
patent: 4388716 (1983-06-01), Takezoe et al.
patent: 4528677 (1985-07-01), Ise et al.

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