a small working inverter for a project/model    ... & ECONOMICAL.\n\nlong powercuts.. being the reason!\n\nthanks
213901
I prefer you buying one.  But there are always schematics out there that show you how to create your own inverters.  \n\nhttp://www.aaroncake.net/circuits/inverter.htm
329483
supplies the power at the appropriate rate for the computer to function properly
167025
a lawnmower or a blender
508455
An inverter is a circuit for converting direct current (DC) to alternating current (AC). Inverters are used in a wide range of applications, from small switched power supplies for a computer to large electric utility applications to transport bulk power.\n\n--> http://en.wikipedia.org/wiki/Inverter_%28electrical%29\n\nAn uninterruptible power supply (UPS), uninterruptible power source or sometimes called a battery backup is a device which maintains a continuous supply of electric power to connected equipment by supplying power from a separate source when utility power is not available.\n\n--> http://en.wikipedia.org/wiki/Uninterruptible_power_supply
603273
In Electronics Physics:\nthe use of an oscillator feedback loop as a power supply. Add a bridge rectifier to the output and feed the DC current Resistance limited back to the oscillator amplifier setup. Like using an auditorium feedback signal to drive the DC system.
669647
just a crt and some mostly random web content i think. It works for me. 20 minutes or so, a crt and a pc, maybe half a kilowatt hour.
70039
Inverters from multiple companies:\n\n    *  Exeltech\n    * Fronius\n    * Heart Interface\n    * Invertek\n    * Magnum Energy\n    * Outback Power Systems\n    * Powertek\n    * Prosine\n    * Samlex\n    * SMA\n    * Xantrex\n    * Preassembled Power Panels \n\nhttp://www.wholesalesolar.com/inverters.html
189326
I would get a 500 watt inverter to have some safety, you figure with volts times amps but if it uses a motor the starting current can be 5 times the running amps.
638179
Make a solar car, a small one albeit.
663508
you need to describe what you mean by "small" better.\nis it too small vertically, horizontally, or both?\nAlso, how good is your electronics background?\nDo you know how to discharge the CRT and large capacitors so you don't get zapped with 330 to 10,000 volts while attempting to repair it?\nYou also need to define "wavy" better.\nWith the tin amount of information you have given though, it sounds like the power supply is failing, but in which part is impossible to say.
378991
Have a look at my project.  Several links for pictures, wiring, charge controller, and so on.\nhttp://members.rennlist.org/warren/wind.html
372314
i have often thought that a solar powered lawn mower would be an awsome idea......we only mow when the sun is out so why not make one that is ran by the sun and not gas!!!!!\n\nplease let me know if you try this!!!!!
352356
Here's an idea. Make one that will shock people(low voltage) when they ring your bell. ;-)
312193
To design a motor is not an easy task. The motor has poles and the winding is done in a particular fashion. As far as ur science project is concerned , go to a shop ask for 12V dc motor (one that is used in stereos etc.) and then do the operation at home. DOn know about site.
422830
Man did u luck out running into me, go to www.sciplus.com "American science and surplus", all sorts of abandon science projects, factory over runs, cancelled government orders, motors, solar cells, weird stuff in the science dept, it's a mad doctors dream come true, CHEAP TOO ! check it out, you'll find lots of "COOL" stuff, that has many uses ! I did a hydro-electric demonstration of power application, that was so small, I could do it in a lab sink, E-mail me if you want an "A", it's an easy experiment, inexpensive, looks very sophisticated, yet simply displays the hydro-electric properties of producing low cost, hydro-electric power, using no battery's or electric for assistance, just water, so it's completely SAFE ! works on displaying milli-amps of D.C. power, yet you are still producing (at a very low voltage) power.
556640
PV tech is expensive and only works when the sun is shining. Not the best solution when we have a delivery infrastructure for bulk power. Don't forget about all the batteries a solar set-up needs. Where do they go when they no longer hold a charge?\n\nNuclear is the best solution.
335285
Not sure. I use to be an electronics Tech but that was before SMPS existed. I'm guessing you might find something on the link below: