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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One shot pulse generator (5ns)
I tried looking and I found that DS1040 capable to generate one shot 5ns but the component already obsoleted. Is that any replacement part for DS1040 or any others IC with same features?
Datasheet: ...
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1answer
44 views
How should I make a generator-powered rectifier/regulator charge a battery?
In my bicycle, I have a hub generator which provides alternated current, at nominal 6V / 3W.
I have built a regulator/filter/rectifier, using a rectifier bridge, a 6800 uF electrolytic capacitor, and ...
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2answers
180 views
Is electricity wasted when energy generated by power plant is not in immediate demand?
After my second series physics course I have begin to wonder how power plants control energy production to match the usage of a city.
There are several possible answers in my mind listed below:
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1answer
102 views
Improving an existing half wave rectifier circuit on generator
Background: Just upgraded my old Generac portable generator by replacing the rectifier which had gone bad. Here is the schematic. The old style rectifier that this unit used is no longer made or ...
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1answer
109 views
Clock generator with two inverters - how does it work?
I recently assembled a little electronics toy that flashes 10 LEDs one after the other. Unfortunately I do not understand why this circuit is able to provide a clock signal- it looks to me like the ...
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7answers
159 views
What's the name of this component?
What's the name of the thing that creates electricity if you add hot things to one side and cool to the other?
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2answers
85 views
Simple Gas Generator question
I'm a bit new to this stuff so please excuse my elementary question.
A gas generator rated at 700 watts and 120V puts out about 5.8 amps. Is it possible to step down the voltage to 12V with a power ...
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1answer
127 views
Why would I get electrocuted if I touched a non-isolated power line with my feet on the ground?
AC is being produced at a power plant using, let's say, a giant dynamo. A coil is being rotated rapidly through a magnetic field thus generating AC current. This current is then regulated, transformed ...
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2answers
161 views
How to generate 30Hz sine wave?
I'm building a voice ring modulator. Part of it involves a 30Hz carrier sine wave to modulate the voice with. Since I'm trying to build a portable device it will be DC powered, and since a function ...
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1answer
64 views
Where are the losses in an inverter-type portable generator?
I have an inverter-type portable gasoline generator that is rated at 3kW / 3.3kW surge.
In the service manual, the engine's power output is said to be 4kW. (The engine's displacement is 269cc).
I am ...
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1answer
272 views
What is 'load' in percentage?
Aircraft Airbus 320 has two 110/220v 400 hz 90 kva generators, run by two engines. There is an electronic display in the aircraft that also shows the parameters of the electrical system. One of the ...
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2answers
198 views
what happens in a seperately excited DC generator when load increased
A book about electrical machines states as below
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1answer
95 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?
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2answers
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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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2answers
260 views
What is the difference between an alternator and a generator?
What is the difference between an alternator and a generator ?
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3answers
199 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 ...
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0answers
44 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 ...
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4answers
298 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 ...
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1answer
211 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
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1answer
472 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 ...
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1answer
212 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
134 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 ...
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2answers
224 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
169 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 ...
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1answer
153 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
165 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 ...
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1answer
400 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 ...
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1answer
90 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 ...
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3answers
2k 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 ...
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4answers
707 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 ...
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3answers
357 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 ...
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1answer
170 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 ...
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4answers
275 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 ...
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2answers
5k 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 ...
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1answer
402 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 ...
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1answer
374 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 ...
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5answers
919 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 ...
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4answers
191 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 ...
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2answers
146 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 ...
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3answers
671 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?
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3answers
418 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 ...
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1answer
226 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
713 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
669 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 ...
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2answers
244 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 ...
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2answers
300 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 ...
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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 ...
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2answers
301 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 ...
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4answers
475 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 ...
