High-power control circuit of microwave oven

摘要

A high-power control circuit of a microwave oven which is capable of making a voltage and current of a high-voltage transformer in the microwave oven to be in phase to improve a power-factor in the high-voltage transformer, thereby raising output power of the oven to a high level. The high-power control circuit comprises a power-factor compensator compensating a degradation in power-factor resulting from a voltage/current phase difference in the high-voltage transformer. The output power of the microwave oven is raised to a high level by improving the power-factor based on the voltage/current phase difference in the high-voltage transformer.