Small DIY Generator Build/Purchase?

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In summary, it would be easy to construct an electric generator that can generate a single ampere without a gearbox. The generator could be small, and could be made from items found at a hardware store.
  • #1
Macgyverasb
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TL;DR Summary
An electric generator with a 1 AH output?
How easy/difficult would it be to construct an electric generator that can generate a single ampere without a gearbox? How small could this generator be?

I didn't want to jump down the rabbithole of research without asking all of you first. Thanks!
 
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  • #2
These will produce about 0.5 or 1 amp: https://www.walmart.com/ip/Universa...MIyq6H79r_6QIVC0WGCh36WwlwEAYYBSABEgJWrPD_BwE. Also from Amazon: https://www.amazon.com/bicycle-dynamo-light/s?k=bicycle+dynamo+light&tag=pfamazon01-20. Get the set, throw away the lights, take apart the generator, and copy the design.

The tire friction generators require a fairly high speed, so if you want a lower speed design with similar power output, look at bicycle hub generators: https://www.amazon.com/dp/B00OMB7DAI/?tag=pfamazon01-20, or https://www.nashbar.com/shimano-alf...MIxZGgp9z_6QIVFUmGCh0cIQy1EAQYBCABEgIsUfD_BwE.

Use search term bicycle hub generator to find other hub generators. You will need to decide for yourself how easy or difficult it would be to make your own generator. You should be able to get a good idea by taking apart a proven design.
 
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  • #3
@Macgyverasb
The important parameter is power. You need to specify; volts * amps = watts. W = V·A
You mention 1 A·h current, but not the voltage required, or if you require AC or DC.

1. What voltage?
2. What current?
3. AC or DC?
4. What will you use to drive the generator?
 
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  • #4
Baluncore said:
@Macgyverasb
The important parameter is power. You need to specify; volts * amps = watts. W = V·A
You mention 1 A·h current, but not the voltage required, or if you require AC or DC.

1. What voltage?
2. What current?
3. AC or DC?
4. What will you use to drive the generator?

1. 7.5 volts
2. 1 A
3. Whichever requires less materials/components
4. This is where I'd like to experiment with things.
 
  • #5
So you are clearly in the lab experiment range of power. I suggest with something easy to build, and then you can measure the volts and amps that it could make. Below is a very simple one using a cordless drill.

1592154032614.png


That and other lab scale experiments are described on this page.
http://www.creative-science.org.uk/gen1.html

Edit: The reason for the suggestion is the advanced calculations to see how much power you get can be more difficult than just building something.

Stay small, low voltages, be safe.
 
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  • #6
IMHO, the neatest way is to get a chunky stepper-motor and add bridge rectifiers...
 
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Related to Small DIY Generator Build/Purchase?

1. How much power can a small DIY generator produce?

The power output of a small DIY generator can vary depending on the size and type of the generator. However, most small DIY generators can produce anywhere from 100-1000 watts of power.

2. What materials are needed to build a small DIY generator?

The materials needed to build a small DIY generator typically include a small gas or diesel engine, a generator head, a fuel tank, a battery, wiring, and various tools for assembly.

3. Can a small DIY generator be used as a backup power source?

Yes, a small DIY generator can be used as a backup power source in case of a power outage. However, it is important to properly maintain and test the generator to ensure it is in good working condition when needed.

4. How difficult is it to build a small DIY generator?

The difficulty level of building a small DIY generator can vary depending on the individual's mechanical skills and experience. Some generators may be easier to assemble than others, and it is important to carefully follow instructions and safety precautions.

5. Are there any safety concerns when using a small DIY generator?

Yes, there are several safety concerns when using a small DIY generator. It is important to read and follow all safety instructions and precautions provided by the manufacturer. This includes proper ventilation, avoiding carbon monoxide poisoning, and using the generator in a dry and stable location.

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