| 摘要 |
PURPOSE:To reduce the voltage drop dependent upon resistance to reduce power loss by using a resistor having a characteristic, where the resistance value is increased by the temperature rise dependent upon a current, as a power control resistance for the purpose of stabilizing the glow discharge of plural electrodes. CONSTITUTION:Oscillator main body 1 is so produced as to hold airtightness, and anode 2 and cathode 10 are supported by insulating plate 3 and insulating plate 8 respectively and are fixed to the inside. The needle-shaped tip of cathode 10 faces anode 2, and distances between anode 2 and tips of cathodes 10 are equal to one another. Full-reflection mirror 7 and semi-reflection mirror 5 are determined in position so that the line passing through cebters of them may pass a highest- light amplification factor part of the discharge space generated between anode 2 and cathode 10, and mirrors 7 and 5 are fitted to main body 1 by mirror holders 4 and 6 so that thet may face each other. Resistances 9 are fitted to cathodes 10 respectively, and the temperature rise accompanied with the current increment dependent upon a thermistor having a positive characteristic makes the resistance value of them large, so that the power source voltage can be made lower in comparison with a conventional laser oscillator where the resistance value is constant. |
