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Artificial Lighting System Design for Photosynthetic Studies

Tipo de material: TextoTextoSeries ; J. Chem. Tech. Biotechnol., 55(2), p.171-176, 1992Trabajos contenidos:
  • Mouget, J.L
  • De La Noue, J
  • Legendre, L
  • Jeanc, Y
  • Viarouge, P
Tema(s): Recursos en línea: Resumen: Most artificial lighting systems operate with a 1W120 Hz flickering, an undesirable condition for studies on photosynthesis, requiring a fluctuating (flashing light effect)as well as a constant light flux. The amplitude of this flickering depends on the type of lamps and on the power supply. Selected lamps and related power supplies providing a flickering-free light source are critically reviewed. A new system is proposed, that combines a high intensity discharge lamp (simulating natural sunlight)with a high-frequency (>40 kHz)ballast. This power supply provides a flickering-free light flux, and offers such advantages as the use of lamps with high energy output and long life expectancy.
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Most artificial lighting systems operate with a 1W120 Hz flickering, an undesirable condition for studies on photosynthesis, requiring a fluctuating (flashing light effect)as well as a constant light flux. The amplitude of this flickering depends on the type of lamps and on the power supply. Selected lamps and related power supplies providing a flickering-free light source are critically reviewed. A new system is proposed, that combines a high intensity discharge lamp (simulating natural sunlight)with a high-frequency (>40 kHz)ballast. This power supply provides a flickering-free light flux, and offers such advantages as the use of lamps with high energy output and long life expectancy.

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