One magnet no bearing Bedini motor vid3

This is a one magnet no bearing Bedini motor.In this video i am testing the bemf recovery from the 12v relay coil which is in series with the resistors in the trigger circuit.I can recover bemf in both directions across the relay coil with no effect on the running off the motor.
I am also replicating an aircore pickup coil by Xenomorph and can confirm his great findings.Thanks Xenomorph

Category:

Science & Technology

Tags:

• one
• magnet
• bedini
• motor
• newman
• pulse
• electric
• joule
• thief
• joulethief

[Dem0D1ck]

Have you laid the pickup coil on it's side and spun the magnet inside the hollow core? If so, would you share your results?

[knowledgemonger]

The coil has resistance and inductance so there will likely be another effect that follows

Y = 1/sqrt(1 + Z^2)

where Z=1 at the the frequency where F = 1/(2 * PI * L/R) L being the inductance R being the resistance

If you can do a little math and run a spreadsheet, you should be able to make an estimate of the frequency content.

[knowledgemonger]

If you know the RPMs and the angle over which the current pulse flows, you can work out how long (in time) the pulse is. You can then make a very inaccurate estimate of the frequency content of the current.

Every cycle of the pulse looks like all the others so the only frequencies in the pulse are the harmonics of the fundamental frequency.

If the pulse was perfectly rectangular, the frequencies would have to follow the rule: Y = sin(X)/X

where X = 2 PI when one cycle fits exactly.

(MORE)

[jonnydavro]

Hi knowledgemonger.The meters Frequency response is 40hz-400hz so i presume that is not high enough?and thanks for the tip on the shunt.Regards jonnydavro

[knowledgemonger]

Scopes are not all that hard to use. They are really just a machine that draws a graph of voltage vs time.

Did you look up the meter's bandwidth?

A trick for making a more accurate average current measurement is to build your own current shunt and a low pass filter to filter the voltage on the shunt. You then measure the output of the filter with the DVM.

Your local surplus electronics store may even have the shunt.

[Drevtoobe]

For the RPMs not changing when the spinning magnet goes near a pick-up coil, I can suggest a simple experiment: Try different load resistors connected to your pick-up coil, 100 ohms, 200 ohms, 500 ohms, 1K, etc. You should find some resistor values that make the magnet slow down. That's because now you are really extracting energy from the spinning magnet through the pick-up coil attached to a load. The multimeter does not act as a load. You should feel the resistor get hot.

[jonnydavro]

coil.The angular spinning magnet stays still so pickup coils can be arranged around it quite easily.I did a test yesterday and i can get over 50v from one aircoil so the voltage generation is working good.I think tha magnet is made from magnetite which is a mineral off iron so is very hard.

I have also experimented with concave lids and i have one which is similar to what you describe so i will test it and let you know what happens.Thanks for your comment regards jonnydavro

[jonnydavro]

Hi Drevtoobe.I have 2 magnets.One spins verticle,thats the one used in this vid and the other has an angular rotation.You can see this one in my other vids.I think the verticle one has higher rpm but like you noticed it wanders about.This actually is quite useful as when it bumps into a coil it seems to make the voltage jump up a couple of volts and does not have much of an effect regarding rpms off the magnet so if you have 4 arranged in a square the wandering magnet is never far from a pickup

[jonnydavro]

Hi knowledgemonger.I realise you have an electronics background and accurate measurements are important or they mean nothing but i am doing the best i can with what i have.I too would like to see this on a scope.I hope to get one in the future but then it is just the not so small matter of learning how to use it.Regards Jonnydavro

[Drevtoobe]

Actually you can's just add all the voltage outputs. It's not about adding voltages, it's about adding power. The real question is how much power can you get from each of the three coil setups and to compare that to how much power you are consuming to run the motor.

As Knowledgemonger stated, making precise power measurements is not easy but it can be done.