Generator Definition and 1000 Threads

Many sites describe their windmills in terms of wind speed, minimum or max etc. Can anyone share with me how much force in terms of how much torque or kg force is needed to get it rotating? Is there any conversion formula to it? I'm sure different size of generator would require different force...

If a person in USA makes a wind turbine or some sort of other power generator and has more power left over,can he supply that to the national power grid and earn money?If so how much?

I have problem after purchasing a Subaru 1700i inverter generator on ebay. The AC 240 doesn't work but the DC 12V works. It is written on the DC 12V "Only for battery charge" I tried to put a small inverter and a 230W halogen light directly on the battery + and - . The light started to work but...

Few questions about Synchronous generator. A rotor is rotating with angular frequency ω. In this rotor we have windings, which produce magnetic field, through a DC supply. This supply is connected to a rotor with brush contacts. Now this field induces a emf in windings, which are in...

Hi, this problem is from 'Electromagnetism' by Grant & Phillips and it states, Homework Statement 'http://i1129.photobucket.com/albums/m505/physicsbird1/126fig.png" shows a cross-section of the cylindrical high-voltage terminal of a van der Graaff generator, surrounded by an 'intershield'...

Hi Physics Guys, I'm not a physics guy myself but some google searching lead me to this site so I signed up so I could ask a question. I'm into amateur motor sport and I'm currently driving a 1999 Subaru WRX. Anyway I'm always looking out for anything that will increase it's performance...

I have a question that iv been stuck on for wile. I am in year 2, electronic engineering and I am having a little trouble with this. A separately excited shunt generator has the following nameplate data, 50kW, V(FL) = 125, R(A) = .01 ohms, R(F) = 16 ohms and an excitation voltage of 125 VDC...

Hello, I want to use a DC permanent motor as a generator in order to use it to charge a battery. This generator will be rotated by hand. The speed is varying as it rotates by hand. I would like to know what is the circuit that I could use it to charge 12 V chargeable batter? Best wishes,

To compute the checksum for some frame with m bits, corresponding to the polynomial M(x), the frame must be longer than the generator polynomial. Why...?

I was reading about synchronizing of two AC generator. As an aid to grasp the concept, I tried to analyze what will happen if two generators of same frequency and voltage but slightly different phases were paralled. I am slightly surprised to find out that active power flows in there...

Hi, I have seen this pdf (http://homepage.ntlworld.com/julien.dourado/zeph_tech_web/academic_research/1_permanent_magnet_generator.pdf), on page 2 they show a picture of the stator and rotor discs. From what I can see here, they have magnets on either side of the copper wire coils (top and...

Hi, I hope someone can help me. Looking at a magnetic generator, we will have a ring of magnets which will rotate, and then we have the copper wire static. I understand that if I have a ring of alternating magnets, all placed right next to each other, thereby creating a solid magnet surface...

Hi, I hope someone can help me. Looking at a magnetic generator, we will have a ring of magnets which will rotate, and then we have the copper wire static. I understand that if I have a ring of alternating magnets, all placed right next to each other, thereby creating a solid magnet...

Ok here's an idea that isn't a perpetual motion machine (it's no more perpetual than solar cells): Using a big magnifying lens or parabolic mirrors, what are the formulas when either of them are used to evaporate water into water vapor steam to move a turbine to power an electric generator?

Square wave generator...what? Okay, so I built a square wave generator using a 555 timer and schematics that I found off the internet. Upon completion, I dumbly realized that there is only an output. I wanted to use the square wave generator in resonance inductive circuit, but seeing as there...

When I have the Vphase (254 V) S phase (6.2KVA) and I (24A) ? Help !

I need to do some calculations to know if a metal sphere (iron, steel, whatever) that is 0.25kg is dropped from 2 meters, will it produce enough torque (kenetic energy?) to start a generator with the specifications below? Furthermore, if a metal sphere was dropped every second, continuously...

I have a huge generator 2.5MW and I need to calculate the mechanical energy (kinetic energy) it contains when it is running at rated speed (2975 R/min). How can I do that and I quantities do I need ? My goal is to relate how much electric energy the generator produces as depending on its...

I just bought a new rigol DG1022 function generator and I noticed that when I turn the voltage higher than 2V peak to peak, the FG emits a faint high pitched sound. It's barely audible; maybe around 15 kHz. Is that normal for a digital function generator, or does that mean that something is...

I am currently working on a small personal project. It is a small under-water generator/ motor so the setup is as follows. The generator and gearbox are mounted on steel struts within an air-tight nacelle of sorts which is cylindrical and made of steel. The nacelle is submerged in cold water...

hello , i wanted to get a random number generator for colored as well as white noise. all numbers in the range should be equally likely to be produced.. ie, say within 1-100, 50 shouldn't hav an extra high probability. on the net i found this fortran program. http://fortran.com/gauss_random...

hi, thank you for taking the time to read my post, im looking at how to convert the force from a piston moving at approximately 1 meter per hour into electrical power via generator, any ideas appreciated the piston will be slow moving but generate an extremely large force, its a question...

Hi Everyone. I'm new here and glad to find a community with ideas and creativity. I have a stream behind my house that I feel could be utilized for hydro electrical power. I am no engineer but I've been reading up on it's potential for electrical energy. Trouble is that this stream has very...

I'm writing a paper on MHD. I wanted to know briefly about 1. why is MHD no longer a very popular idea. 2. Whether its worthwhile to think about it as a possible feature of hypersonic planes in the future inspite of its dwindling popularity. If possible, please provide links.

Homework Statement Vande Graff generator is used to generate potential difference to the order of 107 volts to accelerate charged particles. Homework Equations My question is, " Will this voltage can be used to accelerate electrons or it is merely confined to accelerating positive...

I am studying Electrical machine course on my engineering semester. Can you you people provide me links for animation pics or video for working of dc generator and dc motors? Thanks for your help.

We have a slip-ring asynchronous (induction) Motor than runs a generator needed for electrical tests. We are trying to improve the energy efficiency of the set-up. The generator spends most of the time running idly and the motor has to keep running during this process to maintain the speed...

I run a 4.2 kw chinese diesel gene which has a 15 ùF capacitor on it. This capacitor keeps blowing up regularly. It cost 18Au$ to replace each time and the city is 100km away... Obviously it does 'nt like my big 2.4 kw grinder or my MIG welder (though the 10hp engine and 4.2 kw gene can handle...

Where do the electrons that electromagnetic induction mobilizes come from? If electrons are waves as the double-slit experiment demonstrates, couldn't they be generated just as mechanical and light waves are generated?

hey all, i recently had an idea to combine the concepts of a magnetic bearing i.e. using the repulsion of magnets to lift a rotating object so that the object may rotate without mechanical friction , as well as an axial-flux alternator where coils of wire are exposed to a regularly fluctuating...

My research involves using a detector that I am trying to test with a pre-experimental setup. To test the functionality of the detector, I am pulsing a light source near the detector using a Picosecond Pulse Labs pulse generator. Here is where my troubles/question comes in: the pulser is...

I was just thinking that if you set something spinning in space it keeps turning, so does this mean once you started an electrical generator turning would you get ‘free’ energy?? Will the force from the magnetic field eventually case the wire to stop spinning?

In a recent discussion the output of a single-phase permanent magnet alternator was the topic. The alternator has a 6-pole rotor and 8 coils in series wound on 4 cores. Output is taken from the opposite ends of the series wound stator. Another fellow made the statement that with the...

I recently bought a hand-crank phone charger. When I opened it up, it looks like the generator is simply a repurposed electric motor. I have not yet tried to flow current through it to see it if would spin. However, I wonder how similar a motor is to a generator. I have heard of electric cars...

I will buy an electric bicycle in a couple of months and want to modify it. I will install a motor that has a max rating of 6,000 watts - common use is about 3k watts. I am also looking for a small, lightweight gasoline engine to connect to another motor - to make a small generator - so that I...

Let's begin. I have been assigned to build a homopolar generator, but I really don't know where to start. I searched the net for some info, but I couldn't find anything useful (for me). I tried to read and understand the wiki-page about this faraday disc, but it's kind of hard to understand...

5000 watt 3600 rpm 120V generator to charge 10 12V Automotive batteries. Will this work? Less or more batteries? Im wanting to put together an electric car. If i use the items above (which is what I have laying around) What size motor would best for longevity, speed ? HP? RPM? AMPs?

Recently I have learned of the Piezoelectric effect. I have seen several videos where people have made small generators using this effect. Can anyone give me step-by-step inscutions o point me in the right direction?

Homework Statement An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231-Ω resistor and a 0.250-µF capacitor. Obtain the voltage of the generator and the phase angle between the current and the voltage across the...

Ok, I used one of these in an experiment the other day but i did not fully understand it. I was setting up an RC circuit, and a pulse generator was connected to the circuit setting a repetition rate of 1ms. But a) What was the role of the pulse generator b) Is the repetition rate like inverse...

Hi, what cheap device is available where a quantum choice can be made.. for example.. particle that goes to left or right path or other similar? I'd like to experience what it is like to split myself between going to work or stay at home. According to Many World Interpretation, when I observe...

Hi everyone. This is my first time trying this. So please be gentle. My question is to do with a dc motor. I want to build a wind generator and I am trying to figure out what size motor to start with and try to size the blades to get the best out of it. I know that their is a lot of other...

can anyone tell me if it is possible to run a asynchronous generator from a capacitor bank and what it may entail.

What would happen if I hooked up a generator at my house (voltage and frequency identical) to the power grid and it was 180 degrees out of phase?

Hello all, I am interested in placing a static charge on a conductor by means of an electrical circuit. One way to do this is by means of a Van de Graaff generator which uses the triboelectric effect to generate net charges, then places them onto two conductors having equal but opposite...

I am using co = 0; co++ If[Mod[co, 20, 1] > 10, 1, 0]; which is used in an iterative function which produces 10 1' s 10 0' s, 10 1' s 10 0' s and so on ... Could I use a similar method to produce 10 1' s then 5 0' s, 10 1's 5 0' s and so on...

Sorry, I had a long post that just got eaten by my computer so I am having to re-type my question. It will need to be brief: Here is an example of a van de Graaff generator: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/vandeg.html It notes that the bottom brush is "given a positive...

hello fine people, some days back saw a signal generator. it has buttons labelled as 1hz, 10hhz,1k,2k,5k,etc. it does not has its own display. you can connect it to some external device for display. me do not have access to it now. it had a dial which could be turn with markings 0.5,2.5,0.1...

Homework Statement Let phi be a homomorphism from the group G under * to the group G' under #, where G = <a>, the cyclic group generated by a. Show that phi is completely determined by the image of the generator a of G. Homework Equations Phi is a homomorphism, therefore phi(x*y) =...

Has anyone come up with a design for an HBO generator to run an engine just on hho? How many lpm would I need to produce to run a 6.4 litre v8