Build a Home-Made Generator: Get Answers Here

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Discussion Overview

The discussion revolves around the construction of a homemade generator capable of producing electricity to power small devices like a fan and a bulb. Participants explore various aspects including the type of magnet required, the generator's RPM, and potential energy sources for operation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about the size and power of the magnet needed for the generator, as well as the required RPM.
  • Another participant asks what source of energy the generator will use, suggesting options like hand crank, wind, or water.
  • A suggestion is made to start with a small DC motor as a generator for initial experimentation.
  • It is noted that modern magnets are quite powerful and that a suitable design for the generator can be achieved with a proper yoke for the coil.
  • Discussion includes the design of automotive alternators, which produce AC that is converted to DC, with typical outputs mentioned.

Areas of Agreement / Disagreement

Participants express various ideas and suggestions, but there is no consensus on the specific design or approach for the generator. Multiple competing views on the energy source and generator type remain present.

Contextual Notes

Participants have not provided detailed information on their prior research or specific design plans, which may limit the depth of the discussion.

Who May Find This Useful

Individuals interested in DIY projects, renewable energy solutions, or basic electrical engineering concepts may find this discussion relevant.

shubhranshu_s
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hey i want to create a simple working generator that can be used to produce electricity so that i can operate a small fan and a bulb. power produced should preferably be ac in nature but dc can also be made to work.

i just wanted to know how much powerful and what size of a magnet is required to fulfill the criteria ? and also the rpm of the generator needed be produced .
can anybody help..?
 
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shubhranshu_s said:
hey i want to create a simple working generator that can be used to produce electricity so that i can operate a small fan and a bulb. power produced should preferably be ac in nature but dc can also be made to work.

i just wanted to know how much powerful and what size of a magnet is required to fulfill the criteria ? and also the rpm of the generator needed be produced .
can anybody help..?

Welcome to the PF.

What research and reading have you done on your own so far?
 
What source of energy were you planning to use to operate it? Hand crank? Wind? Water? Hamster wheel (my favourite)?
 
i just wanted to know these facts so that i can get my head straight and i have ample data before i really dive into this project...
 
Nowadays, the magnets you can buy cheaply are really impressive. It will be easy to produce a strong enough field if you can make yourself a reasonable 'yoke' to rotate your coil in. Have you found information about the basic design of a generator? If you do not specifically need DC (and your applications don't) then and alternator (AC) is the easiest to make.
We like to help but I don't think anyone here will provide you with an actual design so, as berkeman has asked, what do you know so far? Which sources have you used? Spoon feeding is not in our nature - it's not good for you. :smile:
 
Perhaps just try using a small DC motor as a generator first.
 
You could study the design of automotive alternators. A typical alternator produces 3 or 4 phase AC which is converted to DC internal to the unit. Typical DC outputs are 100 - 150 amperes at 13 - 15 volts
 

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