Microwave oven and method of controlling the same

A microwave oven, comprising:

• a power supply part for supplying an alternating current (AC) power;
• a high voltage transformer for generating a high voltage with the alternating current (AC) power generated from the power supply part;
• a magnetron for generating electromagnetic waves with the high voltage generated from the high voltage transformer;
• a control signal generator part for generating a control signal with a predetermined pulse width;
• a counter for counting a time when the magnetron starts being oscillated according to the
• control signal as an oscillation start time;
• and
• a controller part for adjusting the predetermined pulse width of the control signal when the oscillation start time counted by the counter is shorter than a predetermined reference oscillation time.

A method for controlling a microwave oven, the microwave oven including a power supply part for supplying an alternating current (AC) power, a high voltage transformer for generating a high voltage with the alternating current (AC) power generated from the power supply part, a magnetron for generating electromagnetic waves with the high voltage generated from the high voltage transformer, and a control signal generator part for supplying a control signal to the magnetron, comprising the steps of:

• setting up a reference oscillation time;
• measuring a time when the magnetron starts being oscillated according to the control signal as an oscillation start time;
• comparing the reference oscillation time with the oscillation start time;
• and
• adjusting a pulse width of the control signal when the reference oscillation time is other than the oscillation start time.

A microwave oven, comprising:

• a power supply part for supplying an alternating current (AC) power;
• a high voltage transformer for generating a high voltage with the alternating current (AC) power generated from the power supply part;
• a magnetron for generating electromagnetic waves with the high voltage generated from the high voltage transformer;
• a control signal generator part for generating a control signal with a predetermined pulse width;
• a counter for counting a time when the magnetron starts being oscillated according to the control signal as an oscillation start time;
• and
• a controller part for adjusting the predetermined pulse width of the control signal when the oscillation start time counted by the counter is other than a predetermined reference oscillation time.