System for microwave enhanced chemistry

Details System for microwave enhanced chemistry System for microwave enhanced chemistry

2008-07-29

2008-07-29

Leung, Philip H (Department: 3742)

Electric heating

Microwave heating

With control system

C219S716000, C219S696000, C219S750000, C219S760000, C219S761000, C204S157150, C315S039510

Reexamination Certificate

active

07405382

ABSTRACT:
According to the present invention, a microwave generator includes a variable voltage provided from a first transformer to a second transformer having a secondary winding split into a filament winding cathode low AC signal and a secondary winding providing a high voltage which is doubled and rectified in a half-wave voltage doubler for providing a pulsed DC signal through a ballast resistor to a magnetron anode responsive to an electromagnetic field. In still further accord with the present invention, a microwave sample cavity includes a waveguide, and a hole for receiving a sample to be microwave-heated, and an inductive tuning post all on a straight line, wherein the hole is adjacent the waveguide and the post is distant from the waveguide.

REFERENCES:
patent: 2738406 (1956-03-01), Zaleski
patent: 3417343 (1968-12-01), Kenny
patent: 3514566 (1970-05-01), Ironfield
patent: 3876956 (1975-04-01), Levinson
patent: 4017702 (1977-04-01), Harmon et al.
patent: 4931609 (1990-06-01), Aoki
patent: 6294772 (2001-09-01), Greene et al.
patent: 2 062 646 (1977-07-01), None

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