| 摘要 |
PURPOSE:To relieve degradation of the characteristic caused on a ballast by applying high frequency electric field crossing with the discharge path onto the discharge path thereby enabling improvement of negative resistance characteristic without subjected to magnetic influence. CONSTITUTION:The conductor 5 connected to an electrode 3 will feed the discharging power from a power source 9 through a starting circuit 8 while the high frequency electrode 4a is fed with high frequency power from a power source 7 when thermions are emitted from the electrode 3 under lighting. When it is connected electrically in such a manner to start discharge through the circuit 8, the electron group moving in the discharge circuit is subjected to the force caused on the high frequency field produced between the electrode 4a thus to promote dispersion in the direction of the electrode 4a. Consequently, the density of electron for ionizing the encapsulated gas will drop to provide positive correlation and positive characteristic between the discharge current and voltage thus to improve the negative resistance characteristic resulting in relieving of degradation of the characteristic caused on the ballast. |
