Joule thief circuit powering a compact fluorescent lightbulb. Following the tips outlined below, you can use the joule thief circuit to power a compact fluorescent lightbulb (CFL) using just some AA batteries. The approach below is popularly known as Jeanna's light ( here's Jeanna's youtube channel.) In the photos below you can see I've put it in a soda can and I'm using it to read by! How to make the joule thief circuit for power a CFL Below is the circuit diagram for what worked for me.
The trickiest part was getting the right windings on the ferrite toroidal core. It's only around a 1 1/4" (3.5 cm) outer diameter toroid so it had to be very efficient while not having the insulation on the coils breakdown from the high voltage. The normal joule thief circuit has only two coils, but as you can see in the above circuit diagram, this one has three. Cutting open (or gutting) the Compact Fluorescent Light (CFL) The only part of the CFL you need is the spiral fluorescent tube and the wires that are connected to it. Winding the coils. Electrofuels Bump Up Solar Efficiency | November 28, 2011 Issue - Vol. 89 Issue 48.
[+]Enlarge OPX Biotechnologies molecular biologist Matthew Lipscomb examines a colony of bacteria the company is using to extract electrons from hydrogen to produce fuels and chemicals from carbon dioxide. Credit: OPX Biotechnologies Electrofuels bypass photosynthesis, offering a potentially more efficient means to convert sunlight into fuels. Photosynthesis is nature’s way of storing energy from the sun in the form of electrons in chemical bonds. Humankind has long taken advantage of this process by using fossil fuels and biomass to produce heat, transportation fuels, and electricity. But photosynthesis is not efficient at converting sunlight into usable energy, and future global energy demand is expected to outstrip nature’s ability to provide the fuels we have grown to depend on. Electrofuels are made with energy from the sun and renewable inorganic feedstocks such as carbon dioxide and water in processes facilitated by nonphotosynthetic microorganisms or Earth-abundant metal catalysts.
MiniMill. Poor man’s Peltier air conditioner. L'énergie solaire et le moteur Stirling. Présentation générale : Il semble, actuellement, que le plus grand domaine de développement du moteur Stirling est celui de la transformation de l'énergie solaire en énergie électrique. Nous verrons ci-dessous le principe de cette conversion et les projets concrets réalisés ou en cours. Mais auparavant, il paraît instructif de rappeler certaines données relatives à l'énergie solaire : - La production d'énergie primaire mondiale annuelle est d'environ 12 milliards de tonnes d'équivalent pétrole (tep).
Ou 504 milliards de milliards de Joules... ou encore 140 000 milliards de kWh. Impressionnant ! - 25% de cette énergie est consommée par l'Amérique du Nord, 5% par l'Amérique Centrale et du Sud, 26% par l'Europe et l'Eurasie, 5% par le Moyen-Orient, 3% par l'Afrique et 36% par l'Asie. - Aujourd'hui, on estime à 0,1%, au maximum, la part du solaire dans cette production. 1.
En alignant une parabole vers le soleil, toute l'énergie venant de celui-ci sera concentrée en un seul point. 2. Photologie forestiere, moteurs Stirling, levitation, holographie, webcams. Solar Water Heating Pump Controller - Water. Build an electronic pump controller for a solar water heating system home > water | solar | electronicsA solar water heating pump controller is a key component in most solar water heating systems (DIY or otherwise).
The controller is there to turn the pump on when the fluid in the solar panel is hotter than the water in the hot water tank (or swimming pool), and keep it turned off at all other times. First of all, it is worth noting that there are solar hot water system designs for which a controller is not required. The most common is Thermosyphon Solar Water Heating in which the natural rising of hot water (and sinking of cold water) is used to circulate hot water from the panel to the hot water tank, and cold water from the bottom of the hot water tank back around to the panel.
It is also possible to connect a Photovoltaic Solar Panel directly to a low voltage pump - as long as the panel and pump have similar power ratings - so the pump only runs when the sun is shining. Applied Sciences. Bright and shiny renewable energy. The Zoetrope on a temporary stand. The Zoetrope Status: Complete Attachments: (To download, right-click the file and select "Save Link As") Construction Guide (26.4MB), (Mirror), (Djvu), (Compressed) Magnet Layout Template (SVG) CAD files for metal parts (SVG & DXF) Links: Video Resources Image Gallery The Zoetrope is a vertical-axis wind turbine made from common materials such as stove pipe, metal brackets, plastic sheet and a trailer hub.
Applied Sciences made the decision to open source the wind turbine and provide a freely available introduction to wind power, thereby allowing others to improve the design and functionality. Something to keep in mind is that the power output of The Zoetrope is specifically tailored to the site where it is located and the application for which it is being used. The Zoetrope framed by autumn colors. Video: The coil winding apparatus in action. Some decent wind turbine action. Close-up of the alternator.
Resources: Algae Photo Bio Reactor V2. Upcycle your old PC fans into mini wind generators. Micro-hydro power bucket - Vancouver Hack Space. Hello Hackers! For a long time I have been fascinated by the thoughts of free and renewable energy. My inspiration to build this device came from a cabin in the woods which was surrounded by tall trees which blocked out the sun and the wind. This left me unable to put up solar panels or a wind generator. There is however a small creek which runs on the property. My online research led me to some work in Guatemala by Sam Redfield. The power generator in the system is a Permanent Magnet Alternator (PMA) with a pelton wheel directly attached to the shaft.
The bucket and lid components were initially assembled at the Vancouver Hackspace. Parts List: approximate total cost: $750 Power output measurements: valve 1/2 open: 25.6V valve fully open: 56V The power bucket uses approximately 1.7 liters per second of water at full power. On my next visit to the cabin I plan to bring a dummy load and a second multimeter so I can measure the current produced by the system. Planned future improvements: Pico turbine hydroélectrique. Vous trouverez dans cet article le compte-rendu de la réalisation d'une pico centrale "hydroélectrique" (hydraulique et électrique). La fonction principale de ce système est de recharger un parc de batteries semi-stationnaires destinées à l'alimentation électrique d'un chalet d'alpage, en association avec des cellules photovoltaiques (je ne traiterai pas de la partie photovoltaique dans cet article).
Pour la petite histoire, l'idée même du projet est née alors que je nettoyais ma brouette après quelques travaux de maçonnerie. En manipulant le pistolet à jet d'eau, j'ai toujours été frappé par la force qu'excerçait ce dernier sur mon poignet: a chaque pression sur la gachette, mon bras reculait systématiquement. Quelques travaux plus tard, lors d'un énième nettoyage, la brouette sur le dos, la roue s'est mise à tourner alors que je dirigeais le jet dans sa direction, l'idée était née ... Ce document a pour but d'exposer mon travail et de partager mon expérience. Chapitre 2. Note 2. 2. 3.