Electric heating – Microwave heating – With control system
Reexamination Certificate
2005-02-08
2005-02-08
Leung, Philip H. (Department: 3742)
Electric heating
Microwave heating
With control system
C219S715000, C219S722000
Reexamination Certificate
active
06852959
ABSTRACT:
Disclosed is a circuit and a method for driving a DC microwave oven. The circuit for driving a DC microwave oven according to the present invention includes: an inverting means to convert DC into AC by a driving pulse; a high voltage transformer to transform the AC from the inverting means, and supply the transformed AC to a magnetron; a pulse driving means to generate the driving pulse; and an over-current detecting means to detect an electric current which is supplied to the inverting means from a DC power source, and output an over-current detect signal if the detected current is determined as an over-current, so as to avoid the generation of the driving pulse by the pulse driving means. According to the present invention, the driving of the magnetron could be stopped when a malfunction of an interlock switch caused by an error or the over-current from the DC power source is detected, and circuit elements can be advantageously prevented from being damaged by the over-current.
REFERENCES:
patent: 4904837 (1990-02-01), Low et al.
patent: 5171949 (1992-12-01), Fujishima et al.
patent: 5181160 (1993-01-01), Okamoto et al.
patent: 5237140 (1993-08-01), Akazawa et al.
patent: 5276300 (1994-01-01), Low et al.
patent: 5451750 (1995-09-01), An
patent: 0-289-032 (1988-11-01), None
patent: 0-389-047 (1990-09-01), None
patent: 0-289-032 (1992-07-01), None
patent: 1-292790 (1989-11-01), None
patent: 02-306573 (1990-12-01), None
patent: 03-283289 (1991-12-01), None
patent: 03-295189 (1991-12-01), None
patent: 04-087183 (1992-03-01), None
patent: 04-087184 (1992-03-01), None
patent: 04-087185 (1992-03-01), None
patent: 05-094869 (1993-04-01), None
patent: 06-076935 (1994-03-01), None
patent: 2651927 (1997-05-01), None
patent: 09-120887 (1997-05-01), None
patent: 2801367 (1998-07-01), None
patent: 1988-20955 (1988-11-01), None
patent: 1998-063572 (1998-11-01), None
Office Action issued from Japanese Patent Office, dated May 18, 2004 (no translation attached); Search Report issued from European Patent Office, dated Jul. 7, 2004.
Han Yong-woon
Jang Seong-deog
Kang Kwang-seok
Sung Han-jun
Bushnell , Esq. Robert E.
Leung Philip H.
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