| 摘要 |
<p>There is provided a dielectric barrier discharge tube drive circuit for making a glass plate thick enough for obtaining sufficient mechanical strength, making the illumination area comparatively large, driving with a low voltage, and reducing the apparent current. The drive circuit applies a high-frequency power via a reactor (32) to a planar type discharge tube (19). When the discharge tube is ON, there is set a state near to the series resonance between the inductance of the reactor (32) and the electrostatic capacity of the glass plate (11 and 12). Such an inductance value of the reactor (32) is selected that the frequency of the high-frequency power is slightly smaller than the series resonance frequency and the load impedance viewed from an AC source (31) is set to the rated impedance. With this configuration, it is possible to obtain a high light emission efficiency when using Xe (xenon) having no environmental problem.</p> |
