Browse Prior Art Database

Transmission Line DC Supply Device

IP.com Disclosure Number: IPCOM000094916D
Original Publication Date: 1965-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Canard, G: AUTHOR

Abstract

On a transmission line it is useful to regulate the DC which flows through the line and simultaneously avoid signal flow through the DC supply system which is frequently common to several lines.

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Transmission Line DC Supply Device

On a transmission line it is useful to regulate the DC which flows through the line and simultaneously avoid signal flow through the DC supply system which is frequently common to several lines.

Line L is closed on a load which is of various types, can be variable and can include a switch. When the line continuity is established, it is possible to maintain on L a given DC by suitably biasing transistors T1 and T2. Voltage variations across the transistor terminals have no effects. Thus, a signal superimposed on the DC in L does not act on DC supply device as P. This can be common to other lines A2, B2...Ai, Bi and the signal is transmitted through L'.

Drawings a and b show two possible arrangements of the device. That shown in b is a simplification of the one in a with only one transistor T. Transistors T1, T2 or T can furthermore receive control signals.

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