| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter for inorganic electroluminescence which improves energy efficiency by more accurately operating a resonance circuit near a resonance point, and an inverter for illumination.SOLUTION: In order to calculate a phase deviation of a switching signal gp2, an inverter 1 does not use a current of a resonance circuit 100 hard to detect but uses a voltage Vd for detection from the resonance circuit 100. Since a zero cross point of the voltage Vd for detection is easily detected and timing of the zero cross point of the voltage Vd for detection is not changed relatively to a turn-on duration Td and a turn-off duration of the switching signal gp2 regardless of a duty ratio, the inverter 1 is capable of more accurately calculating the phase deviation of the switching signal gp2 and the voltage Vd for detection. As a result, the inverter 1 is capable of more accurately performing resonance point operation of the resonance circuit 100 regardless of the duty ratio of the switching signal gp2 and is capable of improving energy efficiency. |
