| 摘要 |
A piezoelectric type resonance high-voltage light-starting circuit, wherein, the intrinsic capacitance characteristic of a piezoelectric transformer is utilized as a piezoelectric capacitor, and said piezoelectric transformer connected to a light tube is connected in series with an independent inductor, thus forming a resonance type series-connected or parallel-connected light-starting circuit, hereby achieving the efficacy of small leakage current, low operating temperature, and high voltage endurance, as such raising the light-starting efficiency. Furthermore, in the application of said circuit mentioned above, output voltage is further amplified through a booster transformer, thus achieving its characteristics of high illuminance. When driving said plurality of light tubes, a fixed frequency is utilized in making an intrinsic impedance of an equivalent circuit containing said piezoelectric capacitor to be fixed at a constant value, thus current flowing in each of said light tubes is equivalent, and achieving balance of currents in said plurality of light tubes. |
