Magnetron for microwave oven
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsNorio Tashiro, Hirokazu Takahashi
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Abstract
A magnetron for microwave ovens, wherein the thickness d of a coiled filament constituting a cathode in the axial direction of the cathode bears a ratio d/p of 0.3 or less to the pitch p of turns of the coiled filament in the axial direction of the cathode.
Claims6
A magnetron for a microwave oven comprising a hollow cylindrical anode having a plurality of strapped anode vanes and a cathode including a coiled filament disposed coaxially with the hollow cylindrical anode, the ratio of the thickness d of said filament in the axial direction of the cathode to the pitch p of turns of the coiled filament in the axial direction of the cathode being 0.3 or less, said magnetron suppressing noise generation in the frequency range of approximately 0.5 to 1.5 Mhz.
Dependencies are inferred from the claim text.