A generator is a device that generates electricity from mechanical energy via different energy sources such as heat or kinetic energy of water.
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1answer
71 views
I have a 220v /60Hz generator, I want modefie it into 220V/50HZ [closed]
I have a 220v /60Hz generator, I want modefie it into 220V/50HZ....Is it possible?
9
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2answers
406 views
The electricity grid: what keeps small power generators from being 'driven' by large ones?
This is a two part question and pertains to power generation:
What prevents a larger plant (say nuclear) from turning an itsy-bitsy gas generator into an electric motor and drive current through it? ...
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1answer
76 views
How to measure the RPM of a portable home generator ? [closed]
How to measure the RPM of a portable home generator? which meter should be used to do this job?whats the method and procedure ?
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2answers
102 views
What is the difference between an alternator and a generator? [closed]
What is the difference between an alternator and a generator ?
Thank you
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3answers
165 views
ways to generate (small amounts of) electricity
I'm searching into ways of generating very small amounts of electricity, by small I mean enough to light a couple of leds, nothing more
The main idea is to have toys that my daughters (2 and 4) can ...
0
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0answers
26 views
Regarding voltage regulation of a synchronous generator
My textbook somewhat ambiguously defines the voltage regulation of a synchronous generator as the difference between the induced EMF and the full load terminal voltage, divided by the full load ...
3
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4answers
156 views
Sawtooth generator not working - transistor wont discharge my capacitor
I have been trying to build a sawtooth generator using current source which linearly charges my capacitor and a comparator which was supposed to discharge my capacitor, instead it doesn't. Here is the ...
0
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1answer
123 views
Solid State Switch for magnet DC Generator
I'm using a flywheel-driven permanent magnet DC generator to charge up a bank of supercapacitors, 35 farad rated to 25V. For safety I limit the max charge to 22V via a comparator and a zener ...
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2answers
505 views
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0answers
68 views
Ultrasonic agitation of cooling bath [closed]
I am chemist, sorry for being incompetent in my "language".
I would like to create a (heat insulated) cooling bath in which the temperature is maintained by adding solid carbon dioxide (dry-ice) to ...
0
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1answer
199 views
Building a new dynamo bike light
So here is the deal, for the 2nd time in less than a year, my halogen bike light on the front has popped due to cold. This is rather bothersome and I can't find any nice inexpensive LED alternatives ...
2
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1answer
186 views
Simple generator to light a series of LEDs question
Playing around with a simple circuit idea with friends but none of us have really worked with circuits since college so we need a little guidance. The thought is to have a small generator (someone ...
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1answer
114 views
DC Generator to AC Alternator Retrofit [closed]
I want to put together a proposal into retrofitting the damaged DC generator with an AC alternator, and fitting the two other working generators with AC alternators.
The diesel engine is still ...
0
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2answers
196 views
How to create a square wave signal with 120MHz
What is a cheap way to generate a square wave with a frequency of 120MHz. I've been thinking of the following solutions:
* Use a Raspberry Pi, then use a timer or something from that board
* Use an ...
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1answer
371 views
How to make function generator at least up to 5 MHz? [closed]
It should be the most reasonably analog and more than 4 MHz. I only found desings for up to 500 KHz, I don't know if the same principle applies with more frequency. I would apreciate any block ...
0
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1answer
119 views
Electrical Generator Windings - Is there an “ideal” way to wind?
I've got a question that's been bugging me for a while. Is there a "best" way to position a magnet and wire coil inside a generator? I saw a "how-to" on how to build a wind power plant and they had ...
0
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1answer
148 views
What is this equipment called?
In this video at 0:40, what is the equipment he is using to power the motor? It seems to be some sort of torque leveraged device (forgive my ignorance).
...
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2answers
150 views
How can I add white noise to a low-noise 2 Mhz sine signal from the signal generator?
I want to add a defined level of noise to a low-noise/exact signal generator which produces around 2 Mhz.
I heard Zener diodes should be good for that job.
But how can I get a defined level of noise ...
0
votes
1answer
267 views
What's the best method for generating 5V at 2A?
I'm trying to make a crank DC charger. I understand the voltage regulation circuitry and (if needed) the bridge rectifier circuitry, but I'm still a total noob. I'm wondering what is the ...
1
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1answer
72 views
Help with grounding a generator on a running vehicle
Ok, this may be basic, but I can't seem to find a solid answer. If I have an AC generator in use on-board a running vehicle (that is being driven), is a GFCI enough or must some sort of grounding be ...
5
votes
3answers
874 views
Explanation for Differing Stator Winding Orientations
As a layperson, I'm trying to understand the basic configuration for an induction motor or generator. I've looked at many diagrams and photos/cutaways of stator wiring and I've noticed two different ...
3
votes
3answers
411 views
What is the slip factor for an induction generator in an island network?
Most textbooks covering induction machines cover only the motor use-case scenario. When the machine is used as a motor, the slip factor is determined by the frequency of the stator current by the ...
1
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3answers
225 views
How to fake an encoder signal with one function generator?
I wish to be able to have a encoder quadrature signal that I could set the frequency to some specified values (from 10 to 60 Hz). I have a function gen that fulfills the freq requirements but it has ...
4
votes
1answer
160 views
Why not run high power truck-mounted electronics from the truck's engine?
At Burning Man, I see a lot of "art cars" based on internal combustion engine platforms using generators separate to the original vehicle's engine to power their LED displays and sound systems.
Why ...
3
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3answers
207 views
How is electricity typically generated?
I am a pure physics guy, so I understand the fundamental processes behind the generation of electricity, but I'd like to know how to apply it. I was wondering what kind of methods were used in the ...
7
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2answers
2k views
Is it possible to use Kinetic energy to power small devices?
I've tried looking around for as much information as I could gather to build really small wearable electronics that could power themselves by generating energy with movement.
I know that the ...
1
vote
1answer
294 views
Will a gas generator survive an EMP?
Not really sure where to ask this question. I was watching an episode of a TV show involving a gas generator and it got me wondering whether electricity could still be generated by a gas generator ...
2
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1answer
299 views
FEM: How to calculate impedance in stator circuit for loaded generator
I am modeling a synchronous generator and in the stator circuit consisting of 3 phases at the alternator output, I have resistances and inductances of the end windings. Thus I have a 3D approximation ...
2
votes
5answers
820 views
Hand crank DC generator - a simple dummy load that won't burn out?
I'm working on a project that allows a user to crank a hand generator while current and voltage sensors measure the output. After the user finishes cranking, software displays information about how ...
3
votes
4answers
171 views
For a vehicle, what is the most efficient way to store energy from various inputs?
Background
For the past few years I have wanted to make some sort of recreational vehicle that runs on multiple-source renewable energy. For example, a kayak with a trolling motor that gets its ...
2
votes
2answers
135 views
Given a source of mechanical input, can an RC motor charge it's own battery without extra cicuitry involved?
Background
I took my RC quadrotor to a windy field this weekend to fly it around. After the battery died, I retrieved it and while carrying it back home, I noticed that the wind was spinning the ...
2
votes
3answers
554 views
How to get half frequency square wave from sin wave?
The task is to get such wave:
I can get square wave from sin wave, but I have no idea how to make it half-frequency. Have some advices?
1
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3answers
360 views
Regulating a steam-powered model generator
In this age of questing for ever-more-efficient circuit designs, I have been presented with an anachronistic design problem: I need to keep a roughly constant load on a steam-powered turbine ...
1
vote
1answer
192 views
How to divide signal level from function generator
I looked for this answer but was unsuccessful so I want to ask the experts here. I have configured an op amp in non-inverting mode (the first in a chain of 3 stages). It is for amplifying extremely ...
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1answer
568 views
Parallel Operation Problems
I need information about how to set a load sharing devices (woodward brand 2301 A), because when it's working parallel is always take over the load to high and caused reverse power protection active, ...
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2answers
501 views
How do I modify a DC electric generator to get the same power at a lower speed?
This will be a theoretical question.
Suppose that I have a DC generator, and I'm getting 300VA power from it when it rotates at 2000rpm.
I want to make it run at a lower speed of about 700rpm, and I ...
3
votes
2answers
195 views
Which parts of this rotor can be made out of plastic?
I'm asked to redesign a rotor, by making as much parts of it as possible out of plastic. The issue is its weight, we want to make it as light as possible. Especially the shaft & axis of it is the ...
0
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2answers
212 views
3 phase vs 1 phase alternator
I have an automotive alternator, and would like to rewind it for higher voltage for wind power application. Since I am going to use it for Battery Charging, should rewinding it for single phase ...
5
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3answers
1k views
Putting far more mechanical energy into a generator than its electrical load
Funny how I was pondering about this question for a long part of the day yesterday, and today I was at stackoverflow and in the box with the featured questions from other SE sites this very related ...
4
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2answers
270 views
Will a 3 phase induction generator fight its own rotation?
So in a 3 phase induction generator with coils for the stator and magnets for on the rotor, I am wondering if the the current induced in the coils would create a magnetic field that would oppose the ...
8
votes
4answers
375 views
Is there a device that converts any AC frequency to 60 hz?
If I have something like a windmill generator that generates AC current, but at variable frequency, what device(s) would I need to convert that variable frequency into a constant 60hz frequency, so ...
2
votes
1answer
139 views
Alternation of Magnet Poles in DC and AC Generators
I want to create a generator. The current design I am looking at has several magnets along a wheel, with coils around the outside of the wheel. The wheel then spins generating current.
I know that if ...
20
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4answers
2k views
Can I pedal power a laptop device while the device is being used?
I want to research how easy it would be to use a small laptop device while powering it by pedaling on a stationary frame. (For example, using a tablet on an exercise bike, or using a netbook while ...
3
votes
2answers
293 views
How to measure the “efficiency” of a generator?
I've built "linear generators" (a coil on a tube, with a free magnet inside), with different layouts and I want to measure which is one "is the best", or, at least, make some kind of profiling on ...
3
votes
2answers
239 views
why electric motor or alternator have stack of plates?
i have noticed that all of the transformer/motor/alternator/electric actuator have a stack of metal for stator ( or where winding is done. ). why is that needed ? can same thing not achieve by using a ...
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1answer
1k views
Penalty Factor in Generator Dispatching
Can anyone please explain me what is meant by penalty factor in generator dispatching (power systems)...? I know this is used when we define the lagrangian equation for non linear variable costs, but ...
4
votes
1answer
437 views
Compact Fluorescent Lamp Load Calculations
I help build/wire up large illuminated carnival/parade floats, and in the past we have used around 11,000 40w/60w GLS BC light bulbs in festoon sockets, powered by a 800KVA 3 phase diesel generator. ...
4
votes
1answer
264 views
How does a wind turbine protect the bank from a reversal in polarity when spin direction is reversed?
This is a follow-up question to an answer to How does a wind farm prevent the fastest spinning turbine from driving the slowest one?
Spinning a DC motor will generate electricity on it's terminals. ...
4
votes
3answers
197 views
Will a faster rate of change of flux improve electricity generation?
From what I remember about electricity generation, a varying magnetic field is used, either the magnetic field or the coil moves to generate electricity.
e = dB/dT
where
e = voltage induced
B = ...
3
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2answers
1k views
Can I Test Bug Zapper's Voltage With Multimeter?
I have The Executioner bug zapper:
Although it uses 2 AA 1.5v batteries, it also has voltage multiplier like Cockcroft–Walton generator i guess and would like to know if it is safe and would make ...
