| 摘要 |
PROBLEM TO BE SOLVED: To ensure an operation of a drive circuit of an inverter of half bridge type by improving the drive circuit. SOLUTION: The inverter HFI which supplies electric power to a load resonance circuit LC is equipped with a 1st and a 2nd switching means Q1 and Q2 connected in series to a direct current power source DC, a 1st and 2nd drive circuit DC1 and DC2 to the 1st and the 2nd switching means Q1 and Q2, and a resonance circuit synchronization means. The 1st and 2nd drive circuit DC1 and DC2 has a 1st and a 2nd switching resonance circuit SRC1 and RC2 which supplies a resonance output to the switching means as a drive signal by a resonance operation between a voltage induced to a 1st and a 2nd synchronous winding SW1, SW2 which is magnetically coupled to the inductive reactance XL of the load reconance circuit of a load circuit, and a voltage induced to the 1st and the 2nd synchronous windings SW1, SW2. The resonance circuit synchronization means synchronizes the synchronizing operation with the 1st and the 2nd switching resonance circuits SRC1, SRC2. |
