hmmm getting the dynamo to produce the electric ain't cheap right?

thx

Yes it is. I saw huge magnets at Home Fix in BU. Also see if you can get a cheap bicycle light (the ones that attach to the wheel.) Those are basically dynamos connected to a bulb.


This post has been edited by wodenus: Jun 15 2010, 06:52 PM

Method 1.
Sun do move you know you really need to adjust it alot. The hottest point is at 12pm, cool is 9am and 4pm.

Method 2.
Commercial do sell this stuff, why build it? Buy it !!

There is always an alternative:

Sun + Water = Fuel:

http://www.technologyreview.com/energy/21536/

MIT spin-off stores sun's energy to power the world:

http://news.cnet.com/8301-11128_3-10362614-54.html

Daniel Nocera describes new process for storing solar energy:

http://www.youtube.com/watch?v=k7ok8cOJbmo


I can help but what are your goals and objectives from this project?

ok


build it so that it can fill up my pastime during my 2 weeks semester break..

So how much you wanna fork out for this small project of yours?
Are you intend it to work or just for fun?

for fun

Better get Battlefield 2 bad company and play online. 100% your 2 weeks is over before you know it.

damn...
http://forum.lowyat.net/index.php?act=ST&f=215&t=1326552

http://forum.lowyat.net/index.php?act=ST&f=11&t=1444721

http://forum.lowyat.net/index.php?showtopic=1314689&hl=

Looking at all of these thread.
obviously they mass-produce and can produce solar cell with a cheap price.
Feel so depressing..
Don't have the mood to do adi

Magnetic Engine, Wind powerd, Hydro powered, Gravity powered.
Search in You Tube about Magnetic engine and Simple Magnetic engine. It will start your brain running. Then after that open a new theads. It Mech Engineering side.

urgh..
the irony..
need to be pro in chemistry and E&E field..
but i am in mechanical

Well I found the way to make solar panel.
Will put on the first post for others who are interested to do it

The cost of project is vary depending on where you find your parts to build your solar cell.

Simple and easy (Copper Sheet Solar Cell):

How To Make Your Own DIY Solar Cell

http://www.youtube.com/watch?v=5g6VtvwmvF8

An easy DIY solar cell

http://nature-log.blogspot.com/2010/01/eas...solar-cell.html


Good prospective for your future employer due to nanotechnology application (Nanocrystalline Titanium Dioxide (TiO2) solar cell):

A Delicious New Solar Cell Technology:

http://www.youtube.com/watch?v=bVwzJEhMmD8

Nanotechnology brings us Delicious Nanocrystalline Solar Cells:

http://www.youtube.com/watch?v=Hkthhxf2Ug0&feature=related

Make your own blackberry juice solar cell:

http://sciencegeekgirl.com/activities/Blac...olar%20cell.pdf

Overall it is inefficient..
Guess it is a waste of time...
Must get the manufactured solar cell to get more efficiency to produce more electricity.
Therefore I am supposed the only thing that I can do is on wind powered generator

How I home-built an electricity producing Wind turbine:

http://www.mdpub.com/Wind_Turbine/

haha bro...
thx for so much of ur help..
Perhaps I shall keep this mission for my final yr.. xDD

Just a few tips for you:

1) Creating PV cells on your own is a good experiment, but not a good solution. The light to electricity conversion efficiency for homebrew PV are very low.

2) if you are interested in PV, get a small commercial PV panel and fiddle with it. 1 x 1 foot sized PV cost around RM200 (yes it's pricey)

3) Energy storage for renewable source (ie solar, wind etc) need to be able to handle trickle charging. Meaning the battery is able to store small charges (when the sky is cloudy, slow wind, etc). The only solution is Lead-Acid battery. The big ones are the car batteries, the smaller ones are inside UPS devices etc. You can buy small lead acid batteries from electronic part stores. Do not use Lithium-Ion, Nickel Cadmium batteries as they can only be charged when a certain voltage threshold is reached.

4) To generate electricity from kinetic energy for wind turbines, do not use those lame old bicycle dynamo. Source for a 3-phase motor (washing machine part shops, RM150 or so). Alternately, look for a unipolar stepper motor (normally comes with 5 or 6 wires variants). Can be salvaged from broken photocopier, fax machine, printers. Go to your neighborhood kedai besi buruk, they normally put junk computer stuff aside, you can get a broken printer / fax machine for RM10. Final alternative is the CD drive tray motor (DC 12v) it's cheap, easily sourced, but it need high RPM to generate decent current/voltage.

5) Convert your stored energy in a battery to usable AC (so tht you can plug your household device) with an inverter. An inverter electronically creates the sine wave form your DC storage thus duping your household appliance into "believing" that it is being plugged into the AC wall socket. The sine wave created are not perfect sine, which makes it quite unsuitable to be used with sensitive electronic devices.

6) Magnets that are being sold in Malaysia are mostly quite useless for electric generation as they are mainly Ferrites (the same type as the black fridge magnets) or Alnico (nickle plated, slightly stronger than ferrite). Don't be fooled by the magnet size, as bigger magnet will just increase the weight requiring more torque to get your turbine turning, but not necessarily increase your energy output. The best option is Neodymium magnet, look for grade of around N50. They have the highest flux density of all magnet types, and thats what you really need for high output (dense flux cutting through your wire coils). I once bought mine at Ace Hardware Midvalley and that probably just an N30 grade Neodymium (medium strength)

Lastly, don't be discouraged by naysayers here..tinkerers like you were the ones who figured out that rubbing two sticks together can produce fire.

Nice information

This post has been edited by draggy: Jul 29 2010, 12:37 PM