Two-wire resistance bridges for private line circuits

Details Two-wire resistance bridges for private line circuits Two-wire resistance bridges for private line circuits

1980-02-12

1981-08-25

Popek, Joseph A.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333130, H04B 158, H04M 356

Patent

active

042861144

ABSTRACT:
A family of improved 2-wire resistance bridges having from 3 to 14 ports, or legs, is provided for use in interconnecting a plurality of stations or devices in a private line circuit. The bridges include a resistance connected in shunt across the common end of each leg in the bridge, which permits the intrinsic port-to-port loss of the bridges to be adjusted to a desired value that essentially equals the difference between standard toll line input and output power levels, while at the same time maintaining the proper terminating impedance for each of the interconnected devices.

REFERENCES:
patent: 4140875 (1979-02-01), Johnson et al.

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