| 摘要 |
PROBLEM TO BE SOLVED: To securely exert control for making the peak value of an output voltage constant by enabling the start of excitation of a transformer through turning ON a switching element at an optimum timing all the time.SOLUTION: An inverter device is designed such that an input voltage is switched by a switching element, excitation current (drain current Id) is caused to flow in the primary-side excitation winding in an ON period (Ton1) of the switching element, and an AC waveform output voltage Vout is output from the secondary-side output winding of the transformer in an OFF period of the switching element. In the inverter device, a switching control signal Sp is inverted such that after the drain current Id of the switching element flows in a negative direction reverse to a positive direction in which the excitation current flows in a period (Tout+Tx period) of time that a switching control signal Sp is turning OFF the switching element, the switching element is turned ON (Ton2) at the timing of reaching the current value OA.SELECTED DRAWING: Figure 8 |
