PLANCK S CONSTANT DETERMINED BY LEDS Description and Specifications for Lab Tenders
PLANCK S CONSTANT DETERMINED BY LEDS.
PLANCK S CONSTANT DETERMINED BY LEDS This equipment enables to determine Planck’s constant by
the measurement of the diffusion voltage of LEDs of different colours as a function of wavelength or of frequency. It can
also be used to determine wavelengths by diffraction grating,
as well as the interdependences between light intensity and
current and the current/voltage characteristic of LEDs. This
apparatus is provided with 6 LEDs of blue, green, yellow and
red colours in three wavelengths. Cathodes come out through
a common point. Resistance is used as protection and it should
always be enabled before, during the operation of diodes.
TECHNICAL CHARACTERISTICS
• Operating voltage: 6 Vdc
• Max. current : 20 mA, (infrared) LED 100 mA
• Diodes: 6 LEDs (blue, green, yellow and red in 3 wavelengths)
• Wavelengths: 465 nm, 560 nm, 585 nm, 635 nm, 660 nm,
950 nm
• Compensation resistance: 100 ; 1 W
• Connections: safety jacks of 4 mm
• Dimensions: 115 mm x 115 mm
• Weight: approximately 120 g