GRAVITY LAMP

LIGHT FOR THE DEVELOPING COUNTRIES

BY : NAGENDAR.B

Types of gravity powered lamps:

GRAVIA LAMP GRAVITY LAMP

Basic parts involved in creating light:BRASS WEIGHTSA BALL SCREWA DRIVE GEARA ROTOR GENERATOR &A BUNCH OF LEDs.

They emit between 600 and 800 lumens, which is comparable to a typical 40-watt bulb.

When the weights make it to the bottom of the lamp, the LEDs go out, and the person who started has to input more power by moving the weights back up to the top of the screw.

The electricity powers 10 LED bulbs for 4 hours

The spinning gear spins a generator

Downward motion converts into rotational motion

Attaching five 4.5 kilogram weights

What is a Ball-screw?A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction.

LINEAR ACTUATOR

A linear actuator is that which creates motion in a straight line, as contrasted with circular motion of a conventional electric motor.

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Gravity Light is powered by gravity without the need of a battery, it's also seen by its creators as a superior alternative to solar-powered lamps.

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The gearing took the kinetic energy from a weighted bag descending at a rate of a millimeter per second to power a dynamo spinning at 2000rpm.

Mechanical linear actuators typically operate by conversion of rotary motion into linear motion.

ROLLER SCREW ACTUATOR RIGID CHAIN ACTUATOR

CONCLUSION The research had reached this stage where we have developed the light as shown in pictures

R & D still going on and there is scope of development