Adapting circuit for driving a magnetron with multiple switching power supplies
OwnerYixin Yanginventor
Life of this patent
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Abstract
An adapting circuit is connected onto the high voltage end output of a magnetron driving power supply. In the adapting circuit, the high frequency part of current in the magnetron anode loop is converted into a part of the filament driving current. The high frequency part is removed by the two primary coils of a ferret core transformer and converted into a larger current on the secondary coil, which is rectified and filtered to increase the driving current in the magnetron filament loop. Two or more power supplies connected with the adapting circuits are connected together in parallel to drive a high power and high filament driving current magnetron with a correct compensation for its filament current.
Claims3
An adapting circuit for connecting two or more iMOT switching power supplies for driving a magnetron, comprising:
- an input port comprising a first input terminal, and a second input terminal;
- an output port comprising a first output terminal, and a second output terminal;
- a transformer comprising two primary coils as a first primary coil and a second primary coil, a third center tap secondary coil, and a ferrite core;
- a pair of Schottky diodes;
- a capacitor;
- a first inductor;
- a second inductor;
- wherein the first input terminal of the input port and the first output terminal of the output port are connected by the first primary coil of the ferrite core transformer and the first inductor that are connected to each other in series;
- wherein the second input terminal of the input port and the second output terminal of the output port are connected by the second primary coil of the ferrite core transformer;
- wherein the polarity of the first primary coil of the ferrite connected to the first input terminal of the input port is the same as the polarity of the second primary coil of the ferrite core transformer connected to the second input terminal of the input port;
- wherein the third central tap secondary coil of the ferrite core transformer and the pair of Schottky diodes form a full wave rectifier;
- wherein the first output terminal and the second output terminal of the output port are connected by the full wave rectifier and the second inductor that are connected to each other in series.
Dependencies are inferred from the claim text.