LED LIGHTING SYSTEM
#1

Presented By
S V PRAMOD
M SUNIL KUMAR REDDY

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WHAT IS A LED
 Solid state semiconductor device.
 Releases energy in the form of photons.
ELECTROLUMINESCENCE.
 Refractive Indices.
 E=qV (joules)
TYPES OF LED
 WHITE LEDs
 PHOTONIC LATTICE
 ORGANIC LEDs
 MINIATURE LEDs
 HIGH POWER LEDs
 SUPER FLUX LEDs
 ALPHANUMERIC LEDs
RADIATION PATTERN AND VISIBILTY CONSIDERATIONS
 LEDS ARE HIGHLY DIRECTIONAL
 LED's luminous intensity is half the intensity at direct on-axis view
 luminous efficiency in the range of 85-90%.
 CONSIDERATIONS FOR USE
 POWER SOURCES
 LEDs USING SOLAR
ENERGY
 ELECTRICAL POLARITY
 SAFETY
SOME BASIC FACTS ABOUT LEDS
• White LEDs can be placed in abusive environments.
• White LEDs can be "AC" or "DC" powered depending on the model.
• White LEDs are the newest lighting device on the market today.
• White LEDs do not produce "RF" to interfere with radio equipment.
• White LEDs are a proven technology.
• White LEDs last about 100, 000 hours of continuous use.
• White LEDs radiate light at a 15 to 45 degree angle depending on the model.
• White LEDs can be made completely waterproof for use in many marine applications.
• White LEDs are polarity protected, so it is hard to make an installation mistake.
HOW LED LIGHTING SYSTEM IS BETTER THAN CONVENTIONAL LIGHTING SOURCES
 EFFICIENCY
 COLOUR
 SIZE
 DIMMING
 LIFETIME
 SHOCK RESISTANCE
 TOXICITY
LUMINOUS EFFICACY:
 The efficiency of a device in converting electrical power into visible light is called luminous efficacy or luminous performance. It is measured in (lm/W).
Reply
#2
where did you get led lights? ledstrips8.com
would you want one ?
low carborn
Reply
#3

If i only want to light up one led at a time, or only light up more than one layer at the same time.. this works fine.
However, if I also want to light up the bottom right corner in the front (3,3,0), I run into problems. When I supply GND to the lower layer and VCC to the front left column, I
also light up the upper right led in the front (3,3,3), and the lower left LED in the back (0,0,0). This ghosting effect is impossible to workaround without adding 64 individual
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