| 摘要 |
A magnetron for a microwave includes a pair of choke coils wound around only one core in same direction thereby forming a unique type choke coil. Ends of the unique type choke coil are connected among a lead-through capacitor, a center lead and a peripheral lead respectively so that the filter circuit includes jointly the unique choke coil. As a result, the magnetron can eliminate radio frequency noise, reduce the heating caused from a power supply, and reduce the volume of the filter box.
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