Telegraphy – Circuits
Patent
1974-12-04
1976-05-11
Robinson, Thomas A.
Telegraphy
Circuits
H04L 1114
Patent
active
039565904
ABSTRACT:
Apparatus is described for switching between various current values in terminal equipment or remote units of data transmission systems using either mechanical or electronic switches. The connecting paths in a number of switches are connected in series between two current-carrying wires. Diodes polarized in the same direction are also connected between the wires and are interspersed in parallel between switch connecting paths.
REFERENCES:
patent: 3665460 (1972-05-01), Murakami et al.
patent: 3699568 (1972-10-01), Thompson et al.
Robinson Thomas A.
Siemens Aktiengesellschaft
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