Microwave oven capable of preventing overcurrent of a microswitch for controlling a DC power source

In a microwave oven having a case forming a cooking chamber, a door for opening/closing said chamber, a high voltage transformer for generating a high voltage, and a magnetron for generating microwaves driven by said high voltage being outputted from said high voltage transformer, an interlocking device of a microwave oven comprising:

• microswitches for detecting opening/closing of said chamber;
• means for controlling for outputting a driving signal corresponding to said detected opening/closing of said chamber;
• and
• a relay for opening/closing for controlling a power supplied to said high voltage transformer according to reception of said driving signal.

A microwave oven using microwaves, comprising:

• a direct current (DC) circuit part for converting direct current supplied by a DC input power source into alternating current, and for supplying said converted alternating current;
• opening/closing means for connecting between said DC input power source and said DC circuit part;
• current dividing means connected to said opening/closing means for dividing a part of current supplied by said opening/closing means when said opening/closing means is switched on;
• and
• microwave oscillating means driven by an output voltage of a high voltage transformer for generating microwaves.