| 摘要 |
PURPOSE:To readily vary the output of an inverter device and to prevent a switching element from damaging by varying the capacity or the inductance of a resonator corresponding to the variation in the ratio of a duty of a drive circuit to vary the resonance frequency. CONSTITUTION:A saturable reactor 10 is connected in parallel with a resonator 4 in an inverter device, and a current corresponding to the duty ratio of the voltage applied to a drive transformer 8 is supplied to a control winding 11. The inductance of the reactor 10 is varied so that the resonance frequency of the resonator 4 becomes proportional to the duty ratio of the voltage applied to the transformer 8. |
