Control circuit for regulating current flow through a load

Details Control circuit for regulating current flow through a load Control circuit for regulating current flow through a load

H - Electricity

01

J

355/56

H01J 23/34 (2006.01) G05F 1/56 (2006.01) G05F 1/59 (2006.01)

Patent

CA 2006426

A regulator controls the DC current flowing through a load, where the current is initially supplied by an AC voltage source and thereafter rectified, the control being proportional to the load current. In one embodiment, the source-emitter potential of a transistor which functions as a control element is changed by means of a current source such that a current of predetermined strength flows through the control element transistor. The control current for the current source is derived from a current sensor in the load circuit. Additionally, a constant gate potential for the transistor control element is obtained through the current sensor. This circuit is preferably suitable for the regulation of the cathode current of travelling-wave tubes.

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