TRIGGER CIRCUIT OF EXCITATION LAMP FOR LASER
PURPOSE:To prevent the trigger discharge current flowing into each excitation lamp from flowing into the other excitation lamp and accordingly to block the generation of noises, by providing an independent discharge circuit in every excitation lamp. CONSTITUTION:The high-tension and low-tension side...
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Zusammenfassung: | PURPOSE:To prevent the trigger discharge current flowing into each excitation lamp from flowing into the other excitation lamp and accordingly to block the generation of noises, by providing an independent discharge circuit in every excitation lamp. CONSTITUTION:The high-tension and low-tension side excitation lamps 1 and 2 are connected in series and connected to a power source 3. One end 4a on the output side of a trigger transformer 4 is arranged on the cathode K2 of the lamp 2 and the other end 4b on the tube wall of the lamps 1 and 2. Further, a capacitor 5 is connected in parallel to the lamp 2 resulting in the formation of a by-pass circuit. Thereby, the phenomenon that the high-tension side excitation lamp is more difficultly lighted than the low-tension side excitation lamp is eliminated. Since the return circuits for the trigger discharge current of the both lamps are respectively formed, the generation of noises is restrained. |
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