Generator Definition and 1000 Threads

  1. J

    Generators for Home Natural Gas: Find Yours Today

    Hi! I am trying to figure out what kind of generator I need for my home. I am the sole owner to the natural gas under my property and I want to run my house on it's own power. What kind of generator do I need for continuous use?
  2. N

    Designing a Generator: Magnetic Spacing & Volts Generated

    How do I determine magnetic spacing when designing a generator which has magnets placed evenly in a circular pattern so that each magnet do not affect one another when they are going to be spun around a wheel full of coil. How do I determine the Volts generated? How do I determine the...
  3. X

    Can a 2 HP DC motor drives a 5 kW DC Generator?

    Sorry for this noob idea but I'd like to know what happens if: A 2 HP DC electric motor is coupled to a 5kW DC Generator, will the 5kW DC Generator produce a 5kW output? What will happen to these two equipment. Thanks for the Reply!
  4. M

    Calculating Number of Turns Needed for Generator

    Homework Statement A generator is designed to produce a maximum emf of 180 V while rotating with an angular speed of 3900 rpm. Each coil of the generator has an area of 2.0×10−2 m^2. a) If the magnetic field used in the generator has a magnitude of 4.1×10−2 T, how many turns of wire are...
  5. B

    Reactive current to lower the voltage at the generator?

    I had a little discussion with a friend about how reactive current influate voltage drop in a distribusion line. The case: If I have a generator on one side of a line and a load on the other side. The load needs a specific voltage. Now, I'd need a bit higher voltage on the side with the...
  6. D

    Generator used in a power station

    What sort of generator is used in a power station? (synchronous, asynchronous)... And what is the difference between. - Asynchronous Generator - Synchronous Generator - Alternator - Dynamo Thanks!
  7. L

    Rotation Rate of a Generator Coil

    Homework Statement If the rotation rate of a generator coil is doubled, what happens to the peak emf? Homework Equations The Attempt at a Solution I think it stays the same. Am i right?
  8. F

    High axial vibration at permanent magnetic generator

    hi guyz, I have Turbiine(5500RPM)-Gearbox(output 1500RM)-Generator-Exciter-Permanent Magnetiic Generator(PMG). I have problem with high axial vibration at ball bearing permanent magnetic generator. Axial vibration at 5500RPM, but it rotate at 1500RPM. This overall is 3-5 times radial...
  9. O

    Sin Wave Generator IC: Find Availability in Your Country

    can anyone please give me aname of sin wave generator IC .but many ICS as you know as it might be not available in my country
  10. Phrak

    High-Precision 60 Hz Sine Wave Generator for Circuit Elements

    As a circuit element I need a 60 Hz sinewave with low harmonic distortion (maybe 1-2% max.) and precision amplitude (1-2% max) of about 2.5 volts. It should be syncronous with an input reference frequency. The reference is about 30KHz and is some as-yet-undetermined multiple of 60 Hz.
  11. O

    Understanding the Van de Graaf Generator and its Role in MeV Particle Production

    This is on my syllabus for my physics synoptic exam on tuesday so help would be much appreciated and reads as follows. Explain how the Van de Graaf generator leads to the production of MeV particles. NB this is not an exam question or homework - would just like an explanation
  12. T

    Building a Hand Cranked Generator to Charge Your Cell Phone

    I need to build a hand cranked generator that can create enough electricity to maybe charge a cell phone. How would I do this?
  13. R

    Can a 9V Motor Produce 200mA as a Generator?

    Dear Experts, I tried using a small dc motor to generate electricity. Assuming a 9v motor turns at say 2000 rpm and draws a current of say 200mA. If used as a generator will this generator produce exactly the same 200mA if the generator spins at 2000 rpm? I tried spinning the generator...
  14. P

    RPM independent grid tie induction generator

    Through our research we discover that an AC induction motor can act as a DC amplifier, as long as there is torque making it turns. Applying the process we are able to build RPM independent grid tie induction generator. Tested with variable US grid at consumer configuration. Similar to PMA...
  15. I

    Solving Generator Problems to Power 60 Watt Light Bulb

    Alright for a few days now I have been working on a small little cute generator. I want it to power a 60 watt light bulb and that's about it Now my design goes off of what I know and what I have been able to scrounge up but of course it is almost impossible to find anything relevant without...
  16. S

    What Is a Function Generator Used For?

    hi all I have seen in my dc lab that there are some devices which are called function generator I want to know what is function generator? for which purpose this is used and how to operate it?
  17. R

    Generator Power vs Magnetic Field Power: What's the Difference?

    In my experience, seems you can't get something for nothing (or little) but was just curious. What is the difference in conventional generator power and power generated simply by passing a conductor through a stationary magnetic field.
  18. A

    Help with Geothermal Electric Generator from a hot spring

    Hi, I have access to a hot spring. I was thinking it may be ideal to construct a small geothermal electric generation unit using the steam. Question is, if I have access to the hot spring, is this enough as a source to go ahead with a geothermal generating unit of say 100 kw - 200 kw, which is...
  19. J

    How can I build a large alpha particle generator for He++ production?

    I am looking to source (build) a large alpha particle generator that creates (mostly) He++ and not He+ particles. Thanks.
  20. W

    Using a computer as a signal generator

    Hello. I am trying to build a version of a Chladni plate, which is a device that uses a modified speaker assembly to mechanically resonate a dish containing salt or some other powder. When the input signal reaches the resonant frequency of the plate, crazy patterns start to appear in the salt...
  21. S

    Designing a lundell(clawpole ) Type Generator

    Homework Statement I want to know the affect of stator design on bicycle dynamo performance using magnetic circuits, and power output. The bicycle dynamo is a single phase AC generator with permanent magnets on its rotor (mounted on hubshell) and a lundell type armature(mounted on bike axle)...
  22. M

    Top High Torque Low Pressure Steam Power Generators for 1kW Output

    Does anyone know a suitable engine / turbine / expander that can run under 2 bar (30 PSI) of pressure and generate upto 1 kw power output? Basically a high torque, low pressure...i have been searching like crazy everywhere, cannot find anything...Also will a manufactured tesla turbine be able to...
  23. C

    PM generator direction vs. polarity

    Hi, I have a 24v 250w PM DC motor that is being used generate electricity. Problem is that the way it is installed, it can be turned in either direction which of course gives me a polarity problem. I'm sure there is a simple solution, but could someone tell how I maintain a constant...
  24. K

    Power Calculations for Home made generator

    Hello all, This is my first forum post and any problems with the post are openly accepted. I would like a sanity check on my approach to this problem. I have built a permanent magnet three phase AC generator. I need help in properly calculating power values for this. This is for...
  25. E

    What makes a Kelvin Generator work?

    I am wondering how a Kelvin water dropper works and can generate sparks. Basically, water drips onto two sides, and the apparatus attracts positive charge to one side and negative charge to another side. The charge eventually builds up high enough to make a spark. You can see more information...
  26. C

    Understanding and Utilizing a Level Generator for Scientists

    Hello, being attracted by old lab instrumentation ( the more switch, led, displays and knobs, the better ) I purchased for approx 20$ a level generator ( W & G PS something ) from a surplus store. The equipment is without user manual. Fact is, I don't have any idea about what I bought ...
  27. S

    How much uranium-235 does a nuclear power generator consume to generate 1.5 GW?

    SOLVED thank you for the helpHomework Statement The total thermal power generated in a nuclear power reactor is 1.5 GW. How much uranium-235 does it consume in a year? ANSWER m(235U)=-----kg Homework Equations E=mc2The Attempt at a Solution E=mc2...
  28. P

    How to calculate output of a motor used as a generator

    Does anyone know how to figure out how to calculate a motor's output when used as a generator based on the manufacturer's specs for its operation? ie. Small, but powerful DC motor. 0.40" x 0.32" x 0.66" long. Operates on 1.5 - 3.6 Vdc. 110mA @ 3Vdc, no load. 500mA with load...
  29. R

    Is Flat Wire More Efficient for Generator Windings?

    Hello all, I have a simple question about copper windings on generators. From what I have read, magnetism only penetrates the skin of a copper wire by very little. Dosnt this mean that most of the copper in a winding is wasted ? And wouldn't it be more efficient to use flat wire "-"...
  30. H

    Good way to test variable-speed generator output?

    I need to test a variable-speed generator attached to a small wind turbine (lets say). I want to see how much power its producing, as well as the current. It outputs in three-phase Y configuration at frequencies varying from 3 to 9 Hz. The generator is rated at 1.2 kW at 550RPM, with an open...
  31. T

    Can Relativity Help Create a Powerful Energy Generator?

    I'm thinking that if you had a fan, rotating really really fast, then according to relativity the ends of the fan blades would think that the center of the fan has less energy than they do, and the center would think that the ends have less energy than it does right? So if this fan was made of a...
  32. J

    What is the graph of power generator output voltage?

    Homework Statement A generator is made from a 100 turn coil, 5.0 cm by 4.0 cm, placed in a magnetic field of strength 0.20 T. The coil rotates at 50 revolutions per second. http://two.xthost.info/joeykeys/Picture%205.png Sketch a graph of the output voltage of the coil for one cycle if...
  33. brainpushups

    How does Lord Kelvin's water drop electrostatic generator work?

    I recently made a small version of Lord Kelvin's "thunderstorm" while I was bored at school one day, and I'm still mystified as to how such a large potential gets generated. I have two hypotheses, but I haven't had a chance to test them yet and I was wondering if anybody knew how the generator...
  34. W

    Marx Generator Circuit Properties?

    Hello. I have several theoretical questions about Marx generator circuit operation. Note that I am in no way attempting to build one of these, as I would surely never compromise the integrity of this board by intending to build such a risky device. I am curious about the recommended value of...
  35. I

    How Can a PM Generator Be Reconfigured to Drive a Turbine Compressor?

    URGENT: PM Generator in Reverse If you have a permanent magnet generator being driven by a turbine and the generator outputs some power level, how would the configuration of a generator change if it is suppose to drive a turbine's compressor stage with the same power? I think the meaning is...
  36. U

    How Does an AC Generator Produce EMF?

    Homework Statement Need to draw a graph of the emf generated by a simple single-phase generator which has a coil of 200 turns. The coil is 14cm long and 9cm wide. The magnetic field in the generator is 0.15T. The generator coil is turned at a rate of 3000 revolutions per minute. Can someone...
  37. B

    Concept of slip speed in Self Excited Induction Generator (SEIG)

    Hi Guys, :smile: In case of an Induction Generator (IG) connected to grid, the rotor runs at super synchronous (above synchronous) speed exhibiting -ve slip. This is possible since the grid frequency is fixed at say, 50Hz. However, in case of a Self Excited Induction Generator (SEIG), it...
  38. I

    Generator Shaft Power (Input) to Generator Out

    Hi, I am working on a project and my friend said to me the gas turbine shaft power is 'x' amount of power. It is directly coupled to a generator so the power to the generator is the same 'x' amount of power. How does that shaft power relate to the output of the generator? The shaft spins...
  39. W

    Design of Wave generator mechanism

    Attached is a drawing of my Proposed mechanism. Am I right to say the period of the waves could be determined by changing the length of the Rod? Any comments on the design?
  40. E

    Generator types in wind turbines

    What are the percentages of types of generators commonly used in wind turbines? To clarify, what percentage are regular squirrel-cage machines? What percentage are doubly-fed machines, permanent magnet machines, synchronous machines, and so on. I'm looking for a general idea of these statistics.
  41. K

    I need generator which at 150000 rpm give 42A at 10kW current

    Hello, I need Your help. I am looking for generator and I don't know were to find it. I need generator witch at 150000 rpm give 42A at 10kW current. This generator I will use at my car turbine, so it should be smoll. Thank you for your help.
  42. N

    Recovering the generator of rotation from canonical commutation relations

    I'm having a course in advanced quantum mechanics, and we're using the book by Sakurai. In his definition of angular momentum he argues from what the classical generator of angular momentum is, and such he defines the generator for infitesimal rotations as...
  43. J

    Proof of Fermat's Little Theorem: g Generator of Fp*

    Prove that: g is a generator of Fp* if and only if g^(p-1) = 1 (mod p) and gq ≠ 1 (mod p) for all prime divisors q of (p – 1). I am thinking about applying Fermat's theorem...but don't know how... Request help, thanks.
  44. R

    Calculating Charge & Radius of a Van der Graaff Generator Dome

    [b]1. A spherical dome of a Van der Graaff genenerator can be raised to a maximum electrical potential of 600 kV; then additional charge leaks off in sparks as the electric field reaches 3.0 MV/m. Determine the charge and radius of the dome. [b]2. Homework Equations [E=kq/r^2 and...
  45. W

    What Are the Best Ways to Store Energy from a Perpetual Magnetic Generator?

    please help me with this problem... I'm sure someone on here has put this idea in there head on how perpetual magnetic generator would work so i don't need to explain. I have made one and I am making energy LOTS but and trying to figure out the best way to store it. Ideas?
  46. E

    Can Scientists Create Focused Beams of Subatomic Particles?

    What kind of subatomic particle streams are scientists able to generate and how do they do it? I know that LHC is banging together proton-protons streams and protons are large bulky particles and interested in finer grained particles. I am like asking if they can emit quark, gluon, boson...
  47. A

    Orientation of coil in electric generator: Important?

    Hi, I'm working with my granddad on a project to build a (simple!) electricity generating windmill. We're not trying to make the most efficient design possible, just a reasonably efficient design given the simple tools and materials we're using. It's mostly just a project for fun! :) So, we...
  48. K

    Will this linear generator (NIB magnet) work to light infrared pulses?

    Hi. I want to make an assembly in which when one clicks a switch, it lights an infrared LED for 1/30 of a second. Basically, instead of having a switch and a battery, i use a linear generator as a switch, giving current only when pressed to light LED. Like any linear generators, when one...
  49. R

    Twin Prime Sieve - A Unique and Efficient Method for Generating Twin Primes

    http://forums.anandtech.com/messageview.aspx?catid=50&threadid=2331345&enterthread=y" I discovered this sieve a couple of weeks ago and could not find anything similar in the liturature. I made a very ugly proof and sent it off to JAMS, where it was rejected immediately. Since then, we...
  50. neduet

    What Is the Best Low-Cost Material for Generator Windings?

    Hello friends friends, which material generator coil is made and are they insulated of current but not magnat flux or can we use same wire which is used in electrical motors winding, Q:which is low cost and best material winding for generator? thanx
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