My 4 Foot Bedini

[aidrenegade]

What A Beast!

Why-Me, wow that must have lots of momentum! What magnets are you using? I'm still in build mode of my first wheel with my wire and spools on order. I've used 16 85kg pull neodinium magnets I already had as well as lots of strips of lead flashing to build momentum into my bicycle wheel. I've used a bit of 12mm threaded bar with some 12mm bearings for the axle (again already had these).

When I spin it up by hand it will spin for just over 15 minutes before stopping.



I used lots of high viscosity super glue to hold all the lead together and taped it crossways because I felt it was a safer option for holding everything in place. Coil next, I've ordered .91mm wire, 19 awg I think.

[Why-me]

Eeeeeeeww!! That thing is ugly! Not! Das Good work! Scavenging for parts is my forte. My monster build is oooglie. The magnets I use are 6 inch by 4 inch by 1 inch and are ceramic. They weigh 4.5 pounds apiece and are very strong. They can break your fingers if you are not careful and are hard to pull apart.

Here is a flow chart for builders who want to change things in their build.

[Why-me]

Shorted coils = Shorted circuits

I accidently dropped a small wrench on a circuit board and it shorted the coils and circuit board.

[Why-me]

Coils

Here are the bad coils. I probably could use it as a generator pair for charging the battery bank.

[Why-me]

Fixed......

Well, I did the coil pair replacement in a matter of hours. I also hooked up another 8 transistor circuit board. I used J6920 transistors because I already had them.

The J6920 series handles more voltage and amperage, but it has an internal capacitance which helps with the neon bulb overload safety.

It may also deliver a little less to the charge batteries but I can live with it for now. As long as it does render a charge to the batteries, I'm happy.

I hope to see if I am wrong.

UPDATE COMPLETE. bzz bzz bzz bzz...........

[Why-me]

The voltage to the batteries only goes to 30 volts. It seems that the J6920 does limit the input to output ratio. To desulfate the battery bank I will have to either use battery chargers or add another circuit to reach 32.4 volts.

I have to rebuild and add a new surround frame for adding more coil pairs.
Now I wait for a rainbow to find a pot of gold to buy materials.
Wood is not so costly but wire and solder plus coils and circuit board with components is very costly.
Hmmm...perfect english.
Is there anyone out there who wants take a working vacation and help me construct the wood frame?
Bring women who can cook, clean, do gardening and are good conversationalists.

Let's start a community!

[Why-me]

Repair job

This is the repaired circuit board. I did old school wire soldering.

[Why-me]

I forgot to hook up the charge batteries. Now only one circuit works. Now to cry and rebuild everything. Donations welcome.

[Why-me]

Thinking

I have thought about using the same parallel coil setup. This time maybe using one half of each coil for one 8 transistor setup. Both triggers would still be used. The other half of each coil would be for ac to dc rectification to be fed back into the primary battery bank.

Are there any members who wish to post their thoughts on how this would affect the output of each separate use?

I ask for input to perhaps make a more useful contribution to the member community.

Thanks for your participation.

[Why-me]

Rebuild

Photos of my rebuild after the accident.

[Why-me]

More photos of the build.

[Why-me]

More photos of stuff.

[Why-me]

Use What You Have

Here is a drawing of what I am going to do to increase the dc voltage output.

[Why-me]

More photos. The output is about 2.5 amps and a combined voltage of about 18 maybe more.

[Why-me]

Question

How do you combine two rectified DC outputs to make the voltage twice the output?

The outputs I have now are two rectified outputs from a/c to DC using the coil setup I put together. Both are 9.5 volts dc. Together they are not doubled in voltage.

That is to say, positive and (negative connected positive) and negative.
9.5 + 9.5 should equal about 19 volts.

The coils are split at each end and connected parallel in between.

Each end has two outputs connected to two bridge rectifiers.

Anybody who is not shunning want to add their understanding?