Circuit arrangement for providing a saw-tooth current in a coil

Details Circuit arrangement for providing a saw-tooth current in a coil Circuit arrangement for providing a saw-tooth current in a coil

1977-02-18

1979-05-29

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

315408, H01J 2970

Patent

active

041568346

ABSTRACT:
In a circuit arrangement for providing a periodic saw-tooth current in a coil, e.g. a kinescope deflector coil, comprising a one-way conducting device that connects the coil to a voltage source, and a controllable switching device having a control electrode connectable to a periodic pilot-pulse source that makes the switching device conductive during part of the saw-tooth cycle, the switching device being connectable to a current source through an induction coil, the improvement wherein the latter is serially connected with the switching device, both being connected to the voltage source; and wherein a point common to the induction coil and to the switching device is connected through a capacitor to a transformer which latter is in turn connected to the one-way conducting device.

REFERENCES:
patent: 3195009 (1965-06-01), Poorter
patent: 3638067 (1972-01-01), Dietz
patent: 3889156 (1975-06-01), Arya

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