放電ランプ用トランジスタ・インバータの解析

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タイトル別名
  • An Analysis of Transistor Inverter for Discharge Lamp Ballast
  • ホウデン ランプヨウ トランジスタ インバータ ノ カイセキ

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説明

Numerical calculation is made for a transistor inverter which is suitable for discharge lamp ballast. The inverter is composed of a power transistor, two inductors, two capacitors, a diode and a trigger unit which drives the power transistor.<BR>Power delivered to the load, distortion of the output waveform and peak voltage across the power transistor are calculated. Following results are obtained where f0=1/2π√L2C2, R0=√L2/C2 and RL is lamp resistance (lamp voltage divided by lamp current).<BR>(1) Drive frequency f must be equal to or higher than f0.<BR>(2) The power depends strongly on f/f0 and RL/R0, and weakly on L1/L2 and C1/C2.<BR>(3) With small value of RL/R0(≅0.1), the output waveform is almost sinusnoidol. Increasing RL/R0 results large distortion in the output waveform.<BR>(4) Peak voltage on the power transistor depeds on L1/L2 and /C2, and weakly on f/f0 and RL/R0.<BR>These results are useful for designing the discharge lamp ballast and a procedure to determine the values of L1, L2, C1 and C2 is described.

収録刊行物

  • 照明学会誌

    照明学会誌 70 (10), 531-536, 1986

    一般社団法人 照明学会

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