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    Material Choice: Durability, Cost, Weight

    Gokul43201, I had a followup question on 02/18/06 , i did not recieve an answer.I know no one is obligated to answer any question , but you did reply to my topic. if you dont know the answer , at least say so. https://www.physicsforums.com/showthread.php?t=111198
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    Designing a three phase permenent magnet generator

    Thanks for the reply , i really appreciate it
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    Designing a three phase permenent magnet generator

    Gokul43201, have you checked your private messages , i sent you one on feb 7th. i dont know who else to turn to for an answer, the gap is adjustable and is essentially the same @ 0.460" , for both tests. my test coils are 0.390" thick. i have several. 0.035" space top and bottom.. this...
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    Designing a three phase permenent magnet generator

    yes i have diagrams , but would like to ask first , are my thoughts on doubling the thickness , and hence getting double the voltage , essentially correct?
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    Anyone ever used Multisim?

    what are you trying to do? the input to your AND gate is from the same source, your output will allways be a logic one..
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    Designing a three phase permenent magnet generator

    I am designing a three phase permenent magnet generator , and have a question. as a magnet pair passes over a coil , inducing a voltage, that voltage is most dependent on ? 1) the angular velocity ( thats a given) 2) the pole strength 3) flux density 4) energy product. 5) thickness of...
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    Flow battery

    Good point Willib! what exactly is a flow battery? Willib replies : a flow battery is an electrochemical device that uses vandium ions to tranfer charge held in solution to terminals in an ion exchange unit. willib tell me more: :smile: willib replies :Well a flow battery is a technology...
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    Flow battery

    Do a google on " flow battery " this woman from Austrailia did some recent work with them ,really interesting stuff.. in Japan they use them to supply Grid Power from a windfarm ..
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    Toyota Prius hybrid car

    How about the new Honda FCX, which uses a bank of super caps and has a hydrogen oxygen fuel cell , damn what a combo !! http://www.world.honda.com/FuelCell/FCX/ultracapacitor/charging/ [Broken]
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    YOU!: Fix the US Energy Crisis

    i read the article , but can not figure how they are going to get power from osmosis.. below , this was also on the same page anyone see anything wrong with the statements above..?? for one thing the aurora is an effect of solar wind interacting with the magnetic poles of the planet , its...
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    Energy storage in quicklime (CaO) by a sunparabol?

    because if your device liberated H2 & O2 you could burn that too.. Say that you have this large pile of Ca(OH)2 , you might need some way to get the stuff in the center to the outside , where it can be heated . or just heat smaller portions of it..
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    Gear ratio ?

    94.62 : 1 thanks fred .. how did ya know it was a motor :wink: :smile:
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    Gear ratio ?

    they are number of teeth.
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    Gear ratio ?

    Hi , is anyone studying gear ratios?? i need some help with calculating the final gear drive.. i've calculated it at 94.97:1 is this correct??
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    Energy storage in quicklime (CaO) by a sunparabol?

    Very interesting proposal.. it sounds plausable to me.. one question , are you saying the sun does not shine in winter in sweden? you seem to be (roughly) at the same lattidude as southern alaska.? another question , during the heating process ( with sunlight) is the hydroxide given off as...
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    Hydrogen from water

    Ok i've improved the collecter That H2 , O2 Flame is colorless isnt it ?? It lights with a little pop .. I wasnt sure it was lit , till i burnt my finger with it..:bugeye: :wink:
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    Hydrogen from water

    In its current configuration , i was putting 4.09 V at 2 A into the device.. which is a calculated 2 Ohms ( approx).. it actually started bubbling at less voltage and current.. thanks for the reply Edit : pic 2 ; Is a set of 12 plates alternating copper and zinc , seperated by little...
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    Hydrogen from water

    Thanks for the reply , iwas wondering wether or not the gas would be mixed , or would it be mostly hydrogen at the top , of the collector?
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    Hydrogen from water

    second pic.
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    Hydrogen from water

    last night i tried to get hydrogen from water using the aparatus shown. i have to improve my collection tecnique but i was able to collect about a third of a cup ful .. say i collect it from the top of a dome shape device . my question is how will i mix it with the oxygen , to burn it
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    Ultra capacitor

    the reason i posted that, was , ehem , *clears throat , hesitates* in the hope that soon somone with a lot of cash , will fund a lightning project.. with ultra capacitors super low ESR ( equilivent series resistance ) on the order of a few tenths milli ohms, (0.18 milli ohms for the 5000 Farad...
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    Ultra capacitor

    Ultra caps have come to Digikey ...YAY.. you can now buy a 110 Farad capacitor with a working voltage of 2.5V for $31.20 in quantities of one.. for more info google ' UltraCapacitor ' or the newest ' nanogate ultracapacitor.' or check out whats happening at Maxwell technologies...
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    Why does my battery behave like this?

    They will only last 1/2 an hour ,but i dont think it will hurt them , no..
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    Questions about a Hydrogen Economy; Scientific American

    i understand , i was looking for a ballpark figure.. :smile: Thats a lot of Hydrogen , no ?
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    Questions about a Hydrogen Economy; Scientific American

    220,000 kg of hydrogen from one wind turbine , thanks.. :smile:
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    Questions about a Hydrogen Economy; Scientific American

    How much hydrogen could be produced by a Large (1MW) wind turbine in a year??
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    Katrina: Lessons learned

    What the hell!! the Levee broke again , ok , What is the army corp of engineers doing ?? NOTHING !!.... Ooo its too windy and too wet... waaaahhhh waaaaahhhhhh so they are going to wait till the ninth ward fills up again,, idiots... there was a camera guy filming the water comming in ...
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    Why does my battery behave like this?

    your sealed lead acid batterys are 4V each, if you charge them at 16A ,i believe they may in fact be damaged.. you should limit the time they are charging..and test the voltage periodically...
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    Lets talk Turbines

    Oops my mistake.. please disregard..
  30. W

    I need a formula

    no one ( i think ) has mentioned this, if you had access to a machine shop , you could create an exhaust manifold that circulated the exhaust gasses through a heat exchanger , heating your water .. if it is a large diesel engine you could use the cooling water itself !!and use the...
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