AC Generator

As a Inventor/Scientist/Maker/Designer I have always been interested in the creation of energy.

Now I am not talking about the crazy claims to free energy or perpetual motion.

What I am talking about is taking some ordinary items and with a little bit of work you have something that is now providing electricity.

About 3 years ago I first created my AC generator it had four coils and used four magnets to produce AC voltage.

After cleaning up my work room I came across the project that I started 3 years ago and decided I would upgrade it simply out of curiosity and wanting to be inventive.

My previous result with the four coils I was able to produce a whopping 1.2 VAC. That was awful considering I was using 3V to drive the DC motor.

So the first thing I did was to change out the DC motor. I took a old CD-Rom drive apart and used its motor which I could run on 1.5 vdc and used the spindle that holds the cd in place. I then decided that the four coils that I was using were not enough and did some research. I started by looking at wind generators and found that they for the most part are using 9 coils in 3 phase and 12 magnets alternating N/S/N.

I had a old CRT type TV that was going to go to the scrap heap so I tore it apart and used the copper wire for the what I believe is the focus to create my coils. Each coil has 41 turns on it and they are connected together in pairs of three. I was surprised as I was able to get 21 VAC out of a set of three coils. Now this in no way is going to power my house or end the energy crisis but it was still interesting.

I used a couple different configuration of magnets. The first was some small round 1" rare earth magnets, I used 12 of them placed every 30 degrees around a old CD. Then I took apart a couple old hard drives and used a configuration of 4 Neodymium magents. While I do believe that the configuration of 12 magnets would work better if the magnets were stronger the configuration of 4 did a better job as they were stronger.

Upon further thought remembering that AC has a pulse to it I thought what if I hook the output of the coils to a transformer, better yet a motorcycle ignition coil. Well we got lots of voltage, over 700 VAC as my meter only reads AC to 700 V. So what can we do with 700 VAC that has a small amount of current. Well we can light up a CFL bulb, Yeah thats right a CFL bulb. Now in order to make this work I had to detach the actual bulb from the circuit. Upon hooking it up I was surprised it worked and provided a decent amount of light. Taking all this into consideration I might just build a Wind Generator and see what I can do. Who knows with larger coils and larger magnets maybe I could charge some batteries.

Below are some pictures of the project.


Submitted by Roxanna77 on Fri, 2016-05-13 15:15

Roxanna77's picture

I want to make some type of generator myself. 

Submitted by viswesh on Mon, 2016-05-16 22:30

viswesh's picture

i did build one generator similar like this, but this looks good than mine... nice project you are building sir.....


Submitted by JeffRo on Tue, 2016-05-17 13:19

JeffRo's picture

Viswesh thank you, it was just a fun little experiment that I want to finish. If I used larger coils (More Windings) I would probably be able to produce more voltage, I thought about creating a capacitor bank to store the juice.

Submitted by Roxanna77 on Wed, 2016-05-18 11:28

Roxanna77's picture

I have a bunch old wire... going to have to try also!

What is the overall diameter of this? and diameter of the coils?

Thanks for sharing this! 

Submitted by JeffRo on Wed, 2016-05-18 18:59

JeffRo's picture

I used a 1/2" Diameter piece of PVC to wrap my coils. The coil height is 1/2". I used two old CD's, One to mount the coils to and the other for the magnets. The gap distance between the coils and the magnets is 3/16".

If there is anything else you need to know please feel free to ask.

Submitted by nschreiber0813 on Sun, 2016-05-22 13:31

nschreiber0813's picture

Dear: Jeff

Wow very intresting!!! I love it!!! All you need is one of those patents on google for making a permanent magnet motor and you are all set. Well done!!!

From: Noah