AC/DC type microwave oven

Details AC/DC type microwave oven AC/DC type microwave oven

1999-01-07

2000-11-28

Leung, Philip H.

Electric heating

Microwave heating

With control system

219702, 363 15, 323201, H05B 666

Patent

active

061538698

ABSTRACT:
An AC/DC type microwave oven has a function of managing an input power source. The AC/DC type microwave oven comprises a rotatable inverter which inverts a DC power source to an AC power source by a rotational force, a high voltage transformer which receives a common power source or an AC power inverted by the rotatable inverter and outputs a higher voltage, a magnetron which is driven by the high voltage outputted from the high voltage transformer and radiates a microwave and a power control unit for sensing a signal from a power selecting key and preventing the AC and DC power sources from being simultaneously inputted. Therefore, both of AC power and DC power are prevented from being simultaneously supplied to the microwave oven which could result in a malfunction, or an overload occurs in the electric components of the microwave oven. Therefore, only one input power of the common and DC power sources is selected and, the microwave oven is operated properly. The remaining voltage of the battery is always detected and displayed through the display, thereby preventing a complete discharge of the battery.

REFERENCES:
patent: 4667075 (1987-05-01), Sakurai
patent: 4900885 (1990-02-01), Inumada
patent: 4904837 (1990-02-01), Low et al.
patent: 5237140 (1993-08-01), Akazawa et al.
patent: 5347109 (1994-09-01), Nakabayashi et al.

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