Anodic Oscillations and Noise in Glass Bulb Mercury Arc Rectifiers
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概要
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Voltage oscillations and noise generally appear in glass bulb mercury arc rectifiers. The oscillations have two types, one of which is low frequency pulsatory fluctuation having frequency below 10 kc/s and peak to peak amplitude below several volts, and the other is high frequency quasi-sinusoidal oscillation having frequency about 100 kc/s and the same amplitude as the former. In some rectifiers, low frequency fluctuations are generated, accompanied by a faint glow which surrounds a cylidrical anode. High frequency oscillations appear very stably in other rectifiers, accompanied by a bright glow ball in front of the anode, frequently causing radio interference. The frequency of oscillations is affected by arc current, ambient temperature, residual gas pressure, magnetic field or shunt capacitor. On the hypothesis that these oscillations are periodic repetitions of generation of excess ions and the decay of ion density by ambipolar diffusion, the life time of ions can be calculated. The frequencies calculated on some assumptions apparently agree with experimental results.
- 社団法人応用物理学会の論文
- 1966-01-15