| 摘要 |
PROBLEM TO BE SOLVED: To exactly and quickly carry out adjustment work or corrective processing when detection data such as an input or regenerative current is corrected according to the dispersion of products. SOLUTION: An inverter circuit 1 is constituted of a heating coil 12, a capacitor 15, an IGBT 13 and the like. An AC power source circuit 3 feeds power to the inverter circuit 1 through a DC power source circuit 2, and a control circuit 16 drives and controls the inverter circuit 1. In addition, an input current detection circuit 23, an input voltage detection circuit 24 and a regenerative current detection circuit 25 detect an input current, an input voltage and a regenerative current, and an arithmetic processing circuit 22 effects on/off control over the IGBT 13. Based on specific data for each product stored in a correction data storage part 27 beforehand, and standard data corresponding to standard detection data, the processing circuit 22 performs corrective processing of the detection data to calculate its exact value. The specific data is intended to be stored as detection data which coincides with an input power detected under a prescribed condition while separately connecting a wattmeter. |
