| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a balance reactor to be interveningly mounted between a secondary winding and an inverter when an electric power is supplied by making a delta connection and a star connection on the secondary winding of a transformer and connecting each to a converter circuit. SOLUTION: In this induction heating apparatus in which an ac from a three phase ac power supply through a transformer 1 is rectified by an converter circuit 5, and a direct current rectified is supplied to an inverter circuit 19 as an electric power, in order to supply a high frequency ac power to a load coil 20 connected to the inverter circuit, the primary winding of the transformer is formed into a delta connection or a star connection, the secondary winding is formed into two insulated windings having a delta connection 3 and a star connection 4, the terminals of the delta connection and the star connection in the secondary winding are severally connected to the inverter circuit, the inverter circuits with two different systems are connected in parallel with one load coil, and a balancing capacitor 17 is disposed between the load coil and the inverter output part.
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