The Design Of A High Efficiency CATV Trunk Power Supply (1986)

By Frank R. Little Jr., Scientific-Atlanta, Inc

The advent of new technologies in modern CATV distribution electronics has placed increased importance on the operation of the station power supply, especially in feedforward and parallel hybrid station configurations. This paper addresses some of the important areas recently researched by Scientific-Atlanta in the design of a new switching regulated D.C. station power supply which accommodates all possible station configurations and combinations of gain stage technologies. Power circuit topologies and control circuit implementations are compared, and discussion is given to the author's chosen implementation.

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