Crank flashlight

Building this torch (flashlight) helps to understand how it is possible to transform mechanical energy into electricity. This type of transformation is achieved in most of our power plants.

This project reveals all the components of an electric generator. By using a small electric motor the 'other way round', it shows the difference between an electric motor and a dynamo

This crank flashlight works without the use of batteries that are costly and polluting. It also operates with an ultra bright LED bulb that is very energy efficient and has a lifetime of 100'000 hours!

Difficulté

Make 3 small M3 holes at 3.5 cm from the bottom of the bottle (see illustration). Punch a large M6 hole 7 cm away from the ... Cut out the back of the bottle using a saw or a pair of scissors. Leave a small part attached to the bottle as a hinge. Unfold the two flaps of the electric motor with a screwdriver. Gently remove the mechanism. Pass from inside two M2x20 bolts through the 2 holes of the motor cover. On the outside, screw strongly 2 nuts on the ... Make two small holes with a punch in the cap of the bottle. Pass the two legs of the LED through the holes and connect them ... Fix the engine in the bottle by passing the 2 screws and the axis through the 3 small holes. Pass two M2 nuts on the bolts ... Cut two discs in the cardboard following the model and reporting the inner circle (wher the wooden disc will be set) and ... Pass the large M6x80 bolt through the M8 hole of the bottle. On the other side (motor side) pass on a plastic washer, ... Make a small hole on the opposite side of the motor. Push inside a nail and fix it in the nearest electrical connector. ... With a box cutter, extract the metal part from a 4mm electrical connector. Screw a telephone socket to this metal ... Screw back the cap of the bottle and close the bottom slot with insulating tape. Connect the disk to the engine by ...

Fonctionnement

Liens&Références

Date	14.01.2012
Auteur	Martin
Traducteur	lili

Finalité	Produire de la lumière ou de la chaleur
Domaine	Energie Développement durable Mécanisme, rouages, engrenages

Langue(s)	français deutsch english
License