| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high pressure discharge lamp lighting device capable of satisfying (1) non-load voltage: 3.5-5.0 kVp, (2) integration pulse: 100 μs/s(2.7 kV) or more even if the output wiring length is 2 m or more. <P>SOLUTION: The high pressure discharge lamp lighting device has a step-up transformer 8 in which a secondary coil 8b is inserted in a load circuit, a two-terminal thyristor 13 which is connected to a primary coil 8a side of the step-up transformer 8, and a charge and discharge circuit provided between outputs of a DC power supply circuit, and is provided with an ignitor starting circuit which generates a high voltage pulse to the secondary coil 8b of the step-up transformer 8 when the two-terminal thyristor 13 is conducted. The ratio of winding (secondary coil/primary coil) of the step-up transformer 8 is established so that the secondary coil voltage may be nearly 4.3 kV. <P>COPYRIGHT: (C)2009,JPO&INPIT |
