water vortex power

Embedding disabled. Here's the URL: http://www.youtube.com/watch?v=3J87lzqMEnI Forum discussion in Italian:http://forum.nexusedizioni.it/vortex_generator-t1086.0.html

Topic by beforethought 10 years ago  |  last reply 10 years ago


Alternator to generate power?

If got an old car alternator and want to connect it to a battery, I'm using a waterfall to turn a bicycle weel with blades, to turn the alternator. is the slow speed going to be a problem?

Question by HermannR6 2 years ago  |  last reply 2 years ago


The Ultimate Water-Powered Rocket!

NASA and the Air Force Office of Scientific Research (AFOSR) have launched a water-powered rocket 1300 feet into the atmosphere!The rocket was actually propelled by a frozen mixture of "nanoscale aluminium" (isn't that "dust"?) and water, pumped in at the consistency of toothpaste and then frozen in place. The propellant is known as ALICE (aluminium and ice - convenient, eh?)Earlier this month, the collaborative team, Drs. Steven F. Son and Tim Pourpoint of Purdue, Rich Yetter and Grant Risha of Penn State, Vigor Yang of Georgia Tech, Harold Bell and Frank Bauer of NASA, and Mitat Birkan and Thomas Russell of AFOSR watched as the rocket soared high into the sky, to 1300 feet near Purdue University.ALICE is generating excitement among the researchers because it has the potential to replace some liquid or solid propellants. It is a promising propellant energetically. Theoretically, when it is optimized, it could have a higher performance than a conventional propellant. In addition, because of the abundance and easy handling of the raw materials, ALICE could potentially become the propellant of choice for missions leaving other planets, since it could be (relatively) easy to manufacture from local raw materials and far easier to store than cryogenic fuels. Story from Wright-Patterson Air Force Base via Rocket Dungeon.Video found by Jeff-O

Topic by Kiteman 9 years ago  |  last reply 9 years ago


Battery Powered Water Heater

I need some help. Well, I'll be honest, I need a lot of help.  I am trying to heat 1 liter of water running through a small tube that holds 8ml of fluid up by 12C, with a maximum temperature of the heater reaching 60C, and the entire liter needs to be heated within 30 minutes.  In my experiments, the tube holds 8ml of fluid while passing along the 'heater' core, and will pass by the core in a total of 10 seconds. So 8ml heated by 12C in 10 seconds is the limiting factor and multiply that out to cover 30 minutes.  The good news, I have managed to accomplish this feat by wrapping the tube around a curling iron rated at 80W x 110V. End result is 12C rise in output fluid, so I know the theory is completely possible.  However, here's the kicker, the entire system needs to run off of battery power.  So the 2 big questions are: what material should I use as the 'heater core' since I can not use a standard curling iron, and what battery system/configuration should I use (needs to be universal purchase ie, AA, AAA, D, C, 123, 9V, etc) Any help would be greatly appreciated both to my personal safety as I tinker in the garage, and to my wife's sanity as she watches me play with water around plugged in curling irons. :) Thanks in advance. WS. 

Topic by whiskeysausage 6 years ago  |  last reply 4 years ago


Battery Powered Water Heater

I want to make a portable steam generator for my school project. So I want to know if there's any battery powered water heater (that can be used to generate the steam) The steam generator device will be used to help you unwrinkle your clothes without ironing them (in case of no electricity or laziness) so I need any battery powered water heater that is strong enough to generate a lot of steam. Please help or give suggestions. Thank you

Topic by WafiqahK 1 year ago  |  last reply 1 year ago


battery powered water bottle

Hello,  I'm interested in possibly modifying a water bottle with an attached battery and some heat coils, so that it could slowly melt snow in to drinkable water.  When I hike during the summer I carry little water because I'm refilling from streams regularly, and I'd like to do the same thing during the winter.  I don't normally build things on my own, but in this case I can't find any product like this.  I recognize that doing this requires quite a bit of power, so I'm not sure if it will end up being feasible or not.  I'm willing to carry quite a few batteries, however.  For a big mountain ascent, it's not uncommon to carry 4-5 liters of water, so we're talking about 10 lbs of water.  So even if I had to swap out batteries a few times, it would still be worth it to do that.  Any thoughts on the feasibility of this idea, and if so, how to proceed with it?  thanks, Chris

Topic by thaycw1 5 years ago  |  last reply 5 years ago


Water wheel electricity?

We camp every year for two weeks beside a stream. There is no electricity available on our campsite, but we do have a number of things that we'd like to recharge over the two week period. There is a small (2 ft.) dammed waterfall/ rapids in the stream close to where we camp.  Does anyone know how I could make a water wheel electricity generator? Information on all aspects (how to build a water wheel; what type and where to get a generator; storage or regulator advice) would be greatly appreciated. Thanks.

Question by DSHorstead 8 years ago  |  last reply 8 years ago


HHO powered car

One of my friends asked for my help for a project for his school expo. He wants to run a car on water and I have told him not to be too optimistic. when I googled it all I found was that it was not possible(as of now), but no other detail. I did stumble upon an old episode of myth busters in which they came to the conclusion that a car can run on hydrogen, but they were unable to provide enough hydrogen from their electrolysis setup, however, I noticed that the HHO generator created by king of random produces way more gas then theirs. so I wanted to know your opinion and knowledge on this matter and whether this can work or not.  

Topic by Ahtasham Ahmad Mohtashim 2 years ago  |  last reply 2 years ago


How to generate power from water?

Hi.Some days ago I was thinking about power in the future and how we can generate it from resources like sea water(that contains solt!).Can any one help me to know more about this to improve my ideas?

Question by saeidhaghighipour1376 1 year ago  |  last reply 1 year ago


water diven dc generator

Construct a dc generator using a water pump driven by a garden hose.

Topic by alaskagene 10 years ago  |  last reply 10 years ago


Make the stream do the work !

I live 150' from a swift flowing stream (about 35 vertical feet from stream to house) and I am looking for a way to use the energy of the stream to pump water uphill to my garden and a "water feature" I'm building. My wife is more concerned about how the contraption will look in her yard, but I simply want something that will work. ANY advice would be appreciated ! Thanks

Question by noodledad1 6 years ago  |  last reply 6 years ago


How much water does it take? Answered

i was   curious if  anyone could  tell me    how  much  water   (pressure/ volume)  it takes   to turn  a  small  hydro  power generator?   I ask because i  have  about 120 ft. of fall  from   the  top of my   property  to the bottom.  I was curious   how  hard  it would   be    be to  gravity  water through  a  hydro station    at  the lower  end. I plan   on reading up  on  some     small  generators , but  thought someone has   probably already    knows  the answer.The  ones   i seen   on another post   did not    get into the   pressure    volume   information. Thanks  for any help  you   could   give.

Question by andy1917 8 years ago  |  last reply 8 years ago


NiChrome Power Source? Answered

So, I'm doing a project that needs to boil maybe 8-10 drops of water very quickly. I was thinking of using NiChrome wire to do this as in the included diagram (sorry low quality, MS Paint). However, I can't seem to find an appropriate power source. So, I need some easy to obtain powersource that is also relatively small. Something like batteries, a capacitor bank, or anything similar. Remember, it has to be able to boil of those 8 drops pretty fast, lest they condense in another part of the pipe before the desired pressure is reached. 

Question by LiquidLightning 8 years ago  |  last reply 8 years ago


Drinking Water Condenser

Does anyone have any plans or ideas for a DIY drinking water condenser? Something that can make water from the air would be fantastic, especially as climate change starts to have more and more of an impact on the availability of clean water. Electric powered should be fine, directly solar powered might be more difficult. Any thoughts?

Topic by foul_owl 5 years ago  |  last reply 5 years ago


iPod Power ... BUT!

Here's the challenge:I have a Belkin SportCommand iPod Remote and it works great. However, it uses the iPod's connector port and draws its power from the the player. I have this thing installed on a waterproof boombox that needs to play tunes for 8-10 hours at a given time and I don't want to have to open the box AT ALL (lots of water + electronics ...).So, I need a way to have both the iPod accessory plugged in and, at the same time, charge the iPod from a 12v power source (like most car stereo iPod adapters do. I think this is as easy as a little plug to go inbetween the iPod and the accessory, but I can't figure out which pins to tap into. There are a lot of different power pins on the connector, and I need to know which two (ground and V+) are the *charging* inputs.Ideas/suggestions/comments? Thank you!

Topic by tridens 11 years ago


Will this water pump work? Answered

 It is tought to be a wind-powered water pump and i wonder if the desing would work. I hope the picture is understandable.

Question by EdSe1991 9 years ago  |  last reply 7 years ago


Can I generate power from with a generator installed on my water pipes?

Every time I flush the toilet, have a shower, wash the dishes, I think to myself... what a waste of water flow energy. I'm no electronics expert, but I figure connecting a 12 volt dc pump (like a boat bilge pump or something off the hardware store shelf) backwards inline (when I say inline... I mean no leaks... and just operates whenever I use water day to day) with the water supply to my house could generate a little top up trickle to some batteries along with a little solar & wind electricity generation project. Then I think, hang on, as soon as I hook the pump up to a battery... it will just try to pump water back out of my hot water tank house back down the pipe... so looking for ideas here? Anyone out there had a play with this concept?

Question by bekarts 9 years ago  |  last reply 5 years ago


Help!! Hydro power

Hello! I need step by step instructions which shows how to build a hydro power system. I have to do this for a small hostel in the mountains. It needs to make 12v atleast and will use a alternator.I will need lots of help from you guys to build it all.Particulatly on the runner(what type for best efficiency,how to build it, cost, tools)and on the housing for the turbine(what material to use,it will have to be very durable and strong).I am an electronics expert so no need to explain to me what is what. Include a circuit which can charge a 12v battery bank . I am aware how a rectifier can be used to convert the alternator's AC to DC.I would like the rectifier circuit too.Added bonus if you show me how to make a housing for the turbine.Also I would like a homemade charge controller circuit too.The controller will have to have dump load options as well.If you can give a good way to water proof the whole thing... Kudos to you I will need all the plans for this project Alternator, Charge controller ,Blades, How to best wire battery bank etc. Please explain what materials to use etc. And please be aware this will be a rather low budget project.I prefer maximum efficiency and please do not worry yourself about where i will get flowing water etc.And please post your own pics if possible.It may not be possible for me to use power tools and a welder,I prefer simple tools, if not, no problem.

Topic by mhkabir 9 years ago  |  last reply 9 years ago



solar powered cooler

Using these ideas as a starting point:http://en.wikipedia.org/wiki/Icy_Ballhttp://en.wikipedia.org/wiki/Einstein_refrigeratorhttp://en.wikipedia.org/wiki/Gas-absorption_refrigerator"Another variant uses air, water, and a salt solution. Warm air is passed through a sprayed solution of salt water. The spray absorbs humidity from the air. The air is then passed through an evaporative cooler. Humidity is removed from the cooled air with another spray of salt solution. The salt solution is regenerated by heating it under low pressure, causing water to evaporate. The water evaporated from the salt solution is recondensed, and rerouted back to the evaporative cooler."Directions on how to make an icy ball. URL works occasionally.http://crosleyautoclub.com/IcyBall/HomeBuilt/HallPlans/IB_Directions.htmlhttp://blog.modernmechanix.com/2007/07/19/refrigerator-uses-solar-energy/Is a non-flammable, non-toxic, and low pressure version possible?

Topic by beforethought 10 years ago  |  last reply 2 years ago


Solar Water Heater?

Does anyone know where I can find a solar powered water heater? I have an outdoor kitchen & would love to have heated water. Small size-under 15gl would be just great. Thanks-txrosee@yahoo.com

Question by txroee 10 years ago  |  last reply 10 years ago


What is a good design for a pedal powered water pump, (maybe using a bicycle)?

We need to pump rain water from a holding container to a water tower, about 60 horizontal feet and 10 to 15 vertical feet.

Question by lindyloo 10 years ago  |  last reply 7 years ago


Home Water turbine power plant... Mini HELP!!

Hey all! Just thought I would try and save myself some time, by inquiring with you fine folk first.. I am attempting to build a mini turbine system to generate power from a home standard incoming water supply... The PSI is easily high enough to run a mini power gerenating system without a significan/noticable drop in water pressure of the home.. So anyway, this is the prototype that I just knocked up to give you the jist of it.. Any comments on improving the design would be appreciated.. eg.. flow, restrictions etc. The turbines will drive a belt connected to a dynamo... Thanks for your time.... LftnDbt

Topic by Lftndbt 11 years ago  |  last reply 4 years ago


Would a water/air powered CNC machine be feasible?

I was wondering if a water/air powered CNC machine would be feasible. Such a power method would allow the device to be powered by an outside compressor or pump or something else that supplies a flowing (pun) source of air/water. This would allow the only parts needed to be inside the CNC machine to be made by a CNC or small electricaly driven control valves and maybe some potentiometers for position sensing. I have noticed that most of the CNC plans that I see use stepper motors which if I understand right offer only 1 speed, but I do not really understand why. Please tell me what you think. I have been looking at these "build your own CNC printer" and "build your own CNC mill" sites alot lately, but I have no clue yet when it comes to such things.

Topic by nstenzel 6 years ago  |  last reply 6 years ago


How can I make/modify/find a small water pump that runs off battery power?

I'm looking to see if it's possible to either build, modify, or purchase a pump to circulate a small (<1 quart) amount of water up/down a slight incline. It needs to run on a battery, preferably a standard household battery (AA/A/C/D). In addition, I'm on a tight budget for this project, so it needs to be as cheap a solution as possible.

Question by MePerson 9 years ago  |  last reply 5 years ago


I want to power a water pump with usb port but their voltages dont match. What should i do?

A friend of mine showed me a project in a magazine he thought it was really awesome and unusual but i knew i could make it. Although the mag didnt tell how it works i made a design in my mind. i need to power a water pump via usb. I can easily access a 12 volt pump and 5 volt usb but the usb voltage isnt sufficient. Can i find a lower voltage pump or increase the voltage of the usb, please help?

Question by Venemot 7 years ago  |  last reply 5 years ago


Non-solar, non-mains power in the garden?

Looking for advice on low-tech ways of solving a prob, hope someone can help. I really want to create a very small waterfall in my mini-garden, maybe 6” at the most.  I can’t use solar power, as my tiny garden only gets about an hour or so of direct sun around noon (I found out that less then direct sun doesn‘t work; I have a floor-standing 4-bowl cascade that stops the instant a shred of cloud gets in the way). I can’t have mains electricity outside, partly because most of the area is paved and I can’t get the cables safely out of the way; I could get cable around the wall, but it’d have to go round three walls to get it where I need it, and I’m not sure about having the cable overhead. I’ve been searching for some time for some kind of power-pack that I could charge up on the mains, then plug into the feature; I don’t think household batteries would run for very long, I was thinking of something with a bit more punch. Either they don’t make anything like this, or I’ve not yet been able to find the right keywords to track it down; I get untold pages of “solar power” options.  So, basically, people, I’m asking: is there such a thing, or anything that would solve my prob?  I’d have to buy a tiny pump and all the rest of the stuff, but if I can’t power it, what’s the point? Some background: I’m visually impaired, so intricate work is out of the question; I’m not so much low-tech as no-tech; my only power tool is a small cordless drill/screwdriver;  I’m not confident about messing with electricity I live in rented accommodation so I can’t do too much to the structure (ie get the paving lifted and cables put under them, or even running round the walls)

Topic by HelenaTroy 6 years ago  |  last reply 6 years ago


Water Pump Sprinkler

I have a gas powered water pump at the creek for watering a garden and grass. I need a suggestion for building a 'sprinkler head' on the end of the 3" blue collapsable tubing. I have been having to move the water every 15-20 minutes. Thought of using a 3" pvc tube with holes drilled along one side and capping the other end. Any other suggestions? Thanks, Bill

Topic by willthon 9 years ago  |  last reply 8 years ago


Extract heavy water?

I can't get hold of any heavy water so I want to try extract it from normal water, I only need a drop or two. I was gonna use electrolysis to separate the atoms and increase the concentration if heavy water till it gets to around 70% (min.) but how much of power do I need to pass though the wires to only separate H2O and leave the D2O? (Need the deuterium for a fusor I'm building)

Question by JunaidA44 3 years ago  |  last reply 3 years ago


Poseidon- High Powered Modified H2O Rocket

Just thought I would give those interested a sneak peak at the Poseidon's main booster module.Construction-12 x 1.25L Soda bottles spliced with external sleeves using Sikaflex 11FC.The Poseidon's booster module is not yet complete, it has another 7L of capacity to be added. The booster will then be combined with several other modules before Poseidon is ready for launch.You may also like to note the quick attach/release fin system. They are saw toothed sign holders normally found in stationary shops. They allow the fins not only to be attached perpendicular to the body, but also provide a reproducible fixing method.Although this is not my preferred method of splicing, Aircommand.com has put together an excellent tutorial which can show you the principal. My method (which I DID NOT create) involves shrinking the inner bottle with our curled lip. Air command in that tutorial reduces the outside sheath from a larger capacity bottle to suit. The method I use does not call for the use of different sized bottles or a blow torch, just boiling water. Air Commands Splicing tutorialAircommand.com

Topic by Lftndbt 10 years ago  |  last reply 10 years ago


I need a design for a 3 tiered garden water fountain that is solar powered

I have many animals and birds that visit my garden and I would like to provide them with fresh water.  However since there are many raccoons I would like the water to tumble into a larger container at the bottom which they will inevitably make too dirty for the other animals to use.  I am trying to figure out a way to have the whole thing solar powered since I fgure they won't need it on rainy days and ideally able to recycle some of the water - not the stuff the raccoons have used.

Question by shadowdancer 8 years ago  |  last reply 8 years ago


Innovative solar powered radiator - will it work?

Ok, so i live in a rented flat (apartment) in London UK. Its a small flat but its old and doesn't have a gas heating system so i'm stuck using expensive electricity especially as the windows are single glazed and winter is on the way! Brrrrr! I desperately need a cheap and effective heatsource Now I know solar water heaters can be suprisingly effective even in the cold and that got me thinking. I have a south facing garden. Couldn't I use the sun to heat the flat? Specifically, I was thinking, can I use a solar water heater to heat an insulated water tank, then use the tank to heat a radiator after dark? (See diagram below) Bear in mind in temperature during the day at the moment is 11 degrees. Will enough heat be generated to make the system viable? I.e. will the water heat the tank hot enough during the day to keep the room warmish for a evening? Other pressing questions: Do i need a commercial panel or will an instructables model work? Oil filled radiator or water filled? Will it auto-siphon or will i need a pump? cheers a million guys and gals!!!

Topic by Tassle 10 years ago  |  last reply 4 years ago


how to make a water powered desk light ? Answered

I had i kit that was a water powered clock but is there an instructables on how to make a water powered desk light   please give links 

Question by sonic broom 5 years ago  |  last reply 5 years ago


Battery powered water - warmer / Thermostat possible?

Hello. I am looking to design an enema kit that has a simple built in battery powered thermostat.  I work with many patients with chronic pain & opioid induced constipation.   They use warm water enemas often to clear their bowels.  The number one complaint i here is "its too annoying to get the temperature right ' So i was thinking, how could i design a simple design.    It would have to be able to heat 1L of water up to 37-43 Celcius and be battery powered.   So a patient would fill up the 1L enema bag with water, hangit up an turn the heater on with their selected temperature.   THen an alarm will go off and they can administer it with the temperature stable.  So i guess what im asking is it possible to get a battery powered thermostat for this purpose?   If it needs a plug it won't be convenient enough. Thanks heaps! 

Topic by MichaelD361 2 years ago  |  last reply 2 years ago


Solar Power Well Pump Idea Thing

Hello, I've been thinking lately about moving out to the desert lately and living off the grid with a well, but I'm not sure my base idea for pulling up water from a well will actually work. My idea is to have a line running up from the well (ending in a one way valve) to the bottom of essentially a steel water trough with a glass lip on top making it airtight. A pvc would run from a hole in the top to a water storage tank to move water vapors up there and condense them. My hoped mechanism of action would be as the air heats up in the trough due to the sunlight it would force the water up from the well little by little and evaporate it. My question is, will this actually pull up water from the well or would I have to buy a solar pump?  I don't need lots of water fast or high pressure, the water storage will gravity feeds and collect throughout each day. My other idea which I'm pretty sure will work is having the showers, sinks, and washer (using a compost toilet) feed a one way line out to the hotbox too. If as little as 50% of the water makes it back into the lines that way then I will have cut my water usage in half. What does everybody think?

Question by Johanna_W 2 years ago  |  last reply 2 years ago


Can you use hydroelectric power for a water filter? Answered

 I'm surprised this hasn't come up before.. Hydroelectric power is great! could you use it to filter water into a jug on the bank?

Question by Houdinipeter 8 years ago  |  last reply 8 years ago


Battery powered outdoor water dish heater

I have 3 dogs who are kept outside at our Pennsylvania home.  None of the shelters are near an electric source. With winter freezing temperatures on the way, is there a way to keep their water dishes from freezing, especially overnight?   Is there a way I can use one of the electric dog dish heaters to run, say on a battery without it costing an arm and a leg (I have 3 dogs!!)??  I'd buy the dishes at a pet supply place (see site below) for about $30, but running electricity to their kennels is not possible.  Any advice? http://www.petfooddirect.com/product/15045/K&H-Thermal-Heated-Pet-Bowl;?utm_source=nextag&utm;_medium=cse

Topic by mrscloud 7 years ago  |  last reply 7 years ago


Generate Power from water leaving your home

It occurs to me that a lot of power is supplied to pump water into my home -- into my showers, dishwasher, sinks, toilets, etc. And then, as that water plummets from the second story bathroom back into the ground, it builds up a lot of power due to gravity -- and it just goes whooshing away. So let's develop some sort of mechanism that will harvest the energy of that moving water as it leaves our homes. The initial thought is turbines or wheels, sure, but you have to remember the stuff that is leaving the house in that water: hair, food scraps, and all your bathroom functions. So we need to either develop a system that cannot be jammed, filter & divert the water before it reaches our device, or develop a system that harvests the energy without interfering with the flow.

Topic by drbrettschneider 9 years ago  |  last reply 9 years ago


How to make water out of air?

I would like to know how to make a machine that is solar powered and turns air into water. There are devices that create 30 Litres of water in 24 hours. Even though the device that I would like to make is powered by solar it should still provide water during the day provided that there is suffecient humidity in the air. Please help!

Question by Louvan 6 years ago  |  last reply 2 years ago


make or convert water pump to solar power. How to do it?

I would like to add a pump to our little fish pound. I donot want to use the power grid. How cn I convert a store bought electric pump to solar power?

Question by beanco 8 years ago  |  last reply 7 years ago


A different water wheel design?

I posted this idea on the makezine forums recently and got 1 answer but it seems I did not explain what I meant too well so I thought I would try here to see what you think. See the diagram at http://www.nelliott.co.uk/maker/water-wheel.jpg Would this produce more power than a conventional water wheel? My theory is as follows: In the case of a normal wheel each bucket/segment when full of water has the turning power equal to weight of water x length of horizontal line such as the yellow one in the diagram. That is it's weight exerts a force to turn the wheel according to it's horizontal distance from the centre of the wheel. If instead of the normal wheel the 3 blue circles represent 3 sprockets.There would be a whole series of buckets attached to the red lines ( which represent a chain ).Water would pour into the buckets as shown, so it would simply propel the buckets vertically down.The turning power of each one of these would be equal to to weight of water x radius of large wheel. So each would have the turning power of the best one such as the line from H to the center of the wheel. As far as I can see this would mean a large increase in torque over conventional which I hope would easily offset the losses due to the chain drive. What do you think?

Question by buteman 9 years ago  |  last reply 9 years ago


Power supply cooling

I'm building a power supply for my cnc machine that gives off about 37volts at 8 amps, and 12 volts at 0.9 amps. All of the transformers are from radioshack (using 6 heavy duty, 25.2volts, 2 amps transformers, 4 in parallel giving off 25.2 vdc at 8 amps, and 2 12.6 volts in parallel. Together in series gives about 37 volts at 8 amps. using 1 25.2 volts 450mA transformer, center tapped) My case does not have enough room for proper cooling such as fans. My case is water tight though, should I fill it up with something like mineral oil to keep the transformers cool?

Topic by guyfrom7up 11 years ago  |  last reply 11 years ago


tec power options

I was wondering where the best place to ask a question would be, ive been playin with peltiers lately and the ones i have are 0-16v 026A i was wondering if there was any way to make a power supply for them or some way to usa like a car batt. i was just worried as my deepcycle is like 1200 amp dont really want to blow up my 30 a piece tec's  the goal eventually is to mount like 10 to the undersides of an old aluminum icetray  so i can submerge the bottom in water and fill the tray up, flip the power switch and in like 40 seconds have myself some icecubes

Topic by furry1 8 years ago  |  last reply 8 years ago


I would like to power a 12v dc 10amp water pump with a 120v power source...Ideas???

What could I use to do this without actually buying a $100 converter...I have read some instructables on using a pc power supply to make a bench power supply...but that seems like more than I need...any ideas???

Question by wingrider78 9 years ago  |  last reply 8 years ago


Biofuel powered water pump, no moving parts and modular!

I just added a video about how to make one. http://blip.tv/file/4142099 It is probably not what you are expecting. I made the prototype and it works. Brian

Topic by gaiatechnician 8 years ago  |  last reply 8 years ago


Power bill sky high, hot water leaking. Is my overflow valve wrecked? Answered

I went to look at a friends house to see what was causing the electricity bill to be double the cost compared to last years.  What I found was that the hot water cylinder was (1) turned up too hot, and, (2)is constantly trickling out of the overflow pipe. This cylinder isn't vented through the roof, it has a pressure doohickey on the top that vents water direct to the drain outside.  Is there a way to check that the pressure valve is working ok, or just get a plumber to replace it?

Question by Gaark 8 years ago  |  last reply 7 months ago


12v solar to heat water

Im looking to install a hot water cylinder with a 12v immersion heater powered by solar panels(to add wind later) to my hot tub. the idea is to either heat the whole thing all the time or to at least reduce my power usage on the heat side of the running cost. has anyone done anything like this and have any advice? the basic install idea i have is, solar panel/s to a controller controller to a battery controller to immersion heater was also thinking of installing a normally open relay onto the stat of the heater so when it is at temp a fan heater would kick in, but that would be a later install if the water heating would work. any info would be great, if i get enough info i will be doing this and making it into an instructable to further help adopt this to work better. thanks....

Topic by gareth.collier.1985 2 years ago  |  last reply 2 years ago


how to power 9 10 watt leds from a automotive battery?

I am building a under water array using 9pcs  10 watt green leds, and will be powering from a automotive battery. the led data is. 10 watt green 900 lumens voltage dc 9-10.8  current 900mA integrated approach 3 and 3 My current build has them in parallel due to not wanting to lose all leds if one fails but will change this if its not possible. I am having issues finding  a step up dc to dc adjustable driver that will allow a output of 10.8 volts an a current of 8100mA . Anyone have ideals or a better solution. Thanks.

Question by johnnytyler 2 years ago  |  last reply 2 years ago


Making a centrifuge(?) to pump water? Answered

Am I right in thinking a system draws water through a closed, sealed fan (of sorts) which is rotated on a rod powered by a motor that then pushes the water through an outlet? Ive never heard of an impeller or known anymore than the name of a centrifuge so have no idea, although obviously have basic theoretics devised from reading other instructables. What I am looking to create a DIY pump for 5 litre bottles of water. First prototype, I plan to just have a dispenser where you hold a lever (as in a finger length one, as on water coolers) but then I plan to build it up with cooling and mabye building a unit where I can hook up multiple bottles for an extended, no hassle supply. Obvioulsy I intend it all to be motor powered, although If you have knowledge on a manual pump as a backup system, that would be interesting to learn about.

Question by pyrosine 8 years ago  |  last reply 8 years ago


Ideas for powering a sliding gate?

Hi All, For three years now I have been driving in and out of this gate, and each time I do I rack my brain to come up with a clever way to power it. It would be great to have it open without getting out of the car. It's pretty heavy and I have to lean on it to get it moving, but then it rolls along its track nicely. In my work I have access to water pumps, pressure tanks and plumbing fittings, so I have been leaning toward powering it hydraulically. I don't know if this would be possible using town water pressure - if at all. If anyone has any clever ideas or suggestions I would love to hear them. Cheers, cammers.

Topic by cammers 7 years ago  |  last reply 7 years ago