[CENTER][SIZE=5][B]BASIC C**STRUCTI** OF THE MODEL CAR[/B][/SIZE]

[SIZE=2]V. Ryan [F**T=Times New Roman]© 2006[/F**T][/SIZE]

The completed model racing car is shown below. The ‘underneath’ view shows the motors fixed top a polystyrene base, held to it by insulati** tape. The fr**t plastic wheel has a 2mm axle which is taped to the card base. The sequence / stages involved in the c**structi** of the model car are shown ** the pages to follow.
[IMG]http://www.technologystudent.com/images6/solcom12.gif[/IMG] [/CENTER]

[CENTER][SIZE=5][B]SEQUENCE DRAWING OF MANUFACTURE - 1 [/B][/SIZE]

[SIZE=2]V. Ryan [F**T=Times New Roman]© 2006[/F**T][/SIZE]

1. Cut out the shapes for the card base and bodywork.

[IMG]http://www.technologystudent.com/images6/solseq1.gif[/IMG]
2. Shape / form three art straws to the frame of the model car. When folding/bending the straws, place the straws ** top of the card base to ensure that the straw frame matches it in size. Then sellotape the art straw frame to the card base.

[IMG]http://www.technologystudent.com/images6/solseq2.gif[/IMG]
3. Cut a rectangular slot at the fr**t of the card base, using a craft knife. This must be accurately cut as the fr**t wheel should fit precisely in positi**. If the rectangle is too large the fr**t wheel will move from side to side when the finished model is tested. This will make the model move in circles rather than a relatively straight line.

[IMG]http://www.technologystudent.com/images6/solseq3.gif[/IMG]
4. Solder short red and black wire to the motors. Check that red is soldered to the positive terminal and black to the negative terminal of each motor. Fix the motors ** to the polystyrene motor base, using insulati** tape.

[IMG]http://www.technologystudent.com/images6/solseq4.gif[/IMG]
5. Turn the polystyrene motor base over and c**nect the red and black wires to the electrical c**nectors as shown in the diagram opposite. Then c**nect a further l**g red and black wires to the opposite side of the c**nector.

[IMG]http://www.technologystudent.com/images6/solseq5.gif[/IMG]
6. Sellotape the motor base to the straw frame/card. Be careful hoe the model car is picked up as it is not a str**g structure. Lift the model by the motor base otherwise the model could be damaged.

[IMG]http://www.technologystudent.com/images6/solseq6.gif[/IMG]
7. Carefully turn over the model and use insulati** tape to fix the axle to the card. Then turn over the model again so that it stands ** all four wheels.

[IMG]http://www.technologystudent.com/images6/solseq7.gif[/IMG]
Completed card and frame shown below.
[IMG]http://www.technologystudent.com/images6/solseq8.gif[/IMG] 8. Cut out the bodywork card and draw a design that reflects the theme of a racing car. The card can be pushed into the art straw frame quite easily. In fact the bodywork can be interchanged so that the model has different bodywork each time it runs/races.

[IMG]http://www.technologystudent.com/images6/solseq9.gif[/IMG]
9. Finally c**nect the solar panels and, if in England, wait for a sunny day. ‘Flick’ the switch and the model car will move either forward of backwards. Switch the wires at the solar panels terminals to alter the directi**.
[/CENTER]

[CENTER][U][SIZE=5][B]**** SOLAR POWERED DEVICES[/B][/SIZE][/U][/CENTER]

[CENTER][B][SIZE=2]V. Ryan [F**T=Times New Roman]© 2006[/F**T][/SIZE] [/B][/CENTER]

[CENTER][B]Solar powered emergency ph**es can be seen through the major road network in Spain. The emergency ph**es are distributed mainly ** the motorways. The photovoltaic panels do not power the ph**es directly. They slowly charge up batteries allowing the ph**e to be used motorists unlucky enough to have cars that have broken down. Each solar panel is capable of charging a set of batteries to such an extent that the ph**e also be used at night.[/B]
[B][IMG]http://www.technologystudent.com/images6/sol16.gif[/IMG] [/B]
[B][IMG]http://www.technologystudent.com/images6/sol17.gif[/IMG][/B]
[B]This warning symbol can be seen at sharp corners. They warn drivers that they are approaching a sharp turn. This example is solar powered. Each arrow is made up of a number of LEDs. Each ‘arrow’ of LEDs flash in sequence ensuring that the driver is **** likely to see the warning symbol. The LEDs even flash during the day time and are bright enough to be seen at quite a distance. The solar panel charges up a battery system that in turn powers the electr**ic circuit.[/B]
[B]This parking meter is similar to **es seen in Lisb**, the capital of Portugal. They work ** the same principle as the other solar powered devices shown above. Batteries power the electr**ic circuit and the ticket mechanism. The photovoltaic panel charges up the batteries during day light hours.[/B][/CENTER]

[CENTER][B][IMG]http://www.technologystudent.com/images6/sol18.gif[/IMG][/B]
[B][COLOR=#800000]QUESTI**S:[/COLOR][/B]
[B][COLOR=#800000]1.[/COLOR] Sketch and explain any other solar powered devices you have seen or used.[/B]
[B][COLOR=#800000]2.[/COLOR] Design a new or existing device that can be powered by photovoltaic panels. [/B]


[B]الموضوع منقول للفائدة [/B]
[B][URL="http://www.ieees.com"]www.ieees.com[/URL][/B][/CENTER]

مشكور على الكتاب

مشكوووووور

جزاك الله الف الف خيرررررررررررررررررررررررررررررررررررررررررررررررررررررررررررررررر