著者

南淵 幸雄

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.54, no.6, pp.287-293, 1970-06-25 (Released:2011-07-19)

参考文献数

4

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Descriptions are made of the theory and practice of the double spot high output ballast in which a fluorescent lamp is used.The theory states that, when the phase of the filament terminal voltage runs 90 degrees ahead of the tube voltage, the potential difference becomes equal between the opposing electrodes at both ends of the fluorescent lamp, thereby giving rise to the double spots, while the fluorescent lamp is in operation.Not only this fact in proved true, but also the quantitative reasoning on the formation of double spots is presented and backed up by some test data.