照明学会雑誌

照明実施技術調査常置委員会 (昭和44～46年度) 報告

黒沢凉之助

1972 年 56 巻 10 号 p. 568-573
発行日: 1972/10/25
公開日: 2011/07/19

DOIhttps://doi.org/10.2150/jieij1917.56.10_568

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視覚生理情報の照明工学への応用

栗岡豊

1972 年 56 巻 10 号 p. 574-580
発行日: 1972/10/25
公開日: 2011/07/19

DOIhttps://doi.org/10.2150/jieij1917.56.10_574

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放電灯の始動用に適した“はねかえり電圧を利用した発振式昇圧器”について

金田勲

1972 年 56 巻 10 号 p. 581-589
発行日: 1972/10/25
公開日: 2011/07/19

DOIhttps://doi.org/10.2150/jieij1917.56.10_581

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This paper proposes an original booster of a newtype which is applied for almost all kinds of discharge lamps as the starter.
The booster consists essentially of two closed circuits: the first closed circuit including an electric source, a linear inductor and a capacitor in series connection; and the second closed circuit including a capacitor common to the first closed circuit, a bi-directional diode thyristor and a nonlinear inductor. The nonlinear inductor of the second closed circuit is characterized by functions of inducing the backswing voltage due to its distributed effective capacitance on the unsaturated state and providing high saturable voltage against impressed voltage of high frequency.
These two circuits act continuously and alternately to generate high-amplitude oscillating voltage across the capacitor, that is, the nonlinear inductor checks the thyristor's conduction for a given time at every cycle of oscillation by the induction of the backswing voltage and by the subsequent saturating characteristics thereof, while the capacitor is linearly charged by the electric source through the linear inductor giving a constant-current function.
Consequently, an output voltage across the capacitor is boosted by about ten times the source voltage or the break-over voltage of the thyristor.
It is also disclosed that such boosted output voltage can be controlled arbitrarily by adding a bias means for the nonlinear inductor.
The particular significance of this newtype booster lies in its simplified construction.

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Si光電池の光電流測定回路に関する理論的考察

肥後尚志, 室井徳雄

1972 年 56 巻 10 号 p. 590-595
発行日: 1972/10/25
公開日: 2011/07/19

DOIhttps://doi.org/10.2150/jieij1917.56.10_590

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The linearity of incident radiation and photo current measured at the photocurrent measuring circuit of photovoltaic cell is limited by interrelation between ampere-voltage characteristic of photovoltaic cell and performance of photocurrent measuring circuit.
In this paper, it is described how to evaluate constants of equivalent circuit of Si photovoltaic cell by least squares, and the measuring range is made clear of the photocurrent measuring circuit of a cellamperemeter coupled circuit, Campbell-Freeth circuit, and Galvanometer amplifier by investigating the linearity of each circuito by means of equivalent circuit of the Si photovoltaic cell. Especially the Campbell-Freeth circuit to measure short circuit current of photovoltaic cell has been considered optimum precision method of radiation measurement but the upper limit of the measuring range for precision measurement is restricted by a series resistance of equivalent circuit of photovoltaic cell and the lower limit by null detector's voltage resolution. It is suggested that the Campbell-Freeth circuit for measurement of very weak radiation must be constructed by null detector with nv resolution and galvanometer amplifier must be useful for the measurement.

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照明のデータ・シート (No.361)(No.362)(No.363)(No.364)

1972 年 56 巻 10 号 p. plate1-plate8
発行日: 1972/10/25
公開日: 2011/07/19

DOIhttps://doi.org/10.2150/jieij1917.56.10_plate1

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