Microwave oven equipped with a microwave output controlling appa

Details Microwave oven equipped with a microwave output controlling appa Microwave oven equipped with a microwave output controlling appa

1998-06-25

1998-11-24

Leung, Philip H.

Electric heating

Microwave heating

With specific generator

315 511, 315 537, 315 3963, 313299, 331184, H05B 664, H01J 2502

Patent

active

058411143

ABSTRACT:
A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode, the first grid having holes for converting electrons from the cathode to the electron beams, a choke structure, positioned between the cathode and the first grid, for serving as a blocking capacitor, wherein the cathode, the first grid and the choke structure define an input cavity functioning as a resonant circuit, an array of resistors, one end of which is connected to the first grid and the other end thereof is connected to the cathode, for inducing a bias voltage on the first grid, a controller for controlling the array of resistors to make a plurality of resistance values, a second grid provided above the first grid and having holes through which the electron beams passing through holes of the first grid pass, an anode for receiving the electrons passing through the holes of the second grid, wherein the second grid and the anode define an output cavity for generating a microwave, the output cavity being electrically insulated from the input cavity, and a driving voltage source for providing a driving voltage to the cathode and the anode.

REFERENCES:
patent: 2529668 (1950-11-01), Wang
patent: 3805111 (1974-04-01), Ryabinin et al.
patent: 5233269 (1993-08-01), Lien
patent: 5541391 (1996-07-01), Seong

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