| 摘要 |
PROBLEM TO BE SOLVED: To provide a high frequency heater system for preventing loading over the rating of a domestic electric outlet when high frequency output is high, and keeping electric power constant when the high frequency output is low. SOLUTION: This high frequency heater system has an input voltage detecting means for detecting a voltage of a commercial power source 1, an input current detecting means 14 for detecting an input current, an output setting means 17 for setting the high frequency output, a detecting voltage changing means 95 for fixing the detected voltage to a prescribed voltage when the detected voltage is the prescribed voltage or less when the high frequency output is high, keeping the detected voltage still in the prescribed voltage when the detecting voltage exceeds the prescribed voltage, and outputting the detected voltage still in the prescribed voltage regardless of the detected voltage when the high frequency output is low, and a control means 16 for driving an inverter power source with a frequency according to the result of comparing an added voltage by adding a detected voltage of the input voltage detecting means 14 and a detected voltage of the input current detecting means 15 with an output voltage of the output setting means 17.
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