Magnetic mechanical Resonance ideas

[dom444]

I have had this idea for a while so i thought i would put them out there, I have not had a chance to test them except the second one i know that the center magnet does move well, i used a glass tube for low friction.

[Berto3]

Thanks dom444 for sharing your ideas. Can you produce next time smaller drawings? Say 800x600 pix or so. Later I will contribute in this retro thread with practical examples and measurements. 2 weeks ago I started with the setup of mechanical resonance circuits with only 'passive' components. I hope more people will join this vintage OU subject.

[Berto3]

@ dom444
From the drawing above I made the setup of idea 2.
As said in my previous reply I am exploring the magneto/mechanical resonance in a linear system. Why always rotational
systems? Exploration of the behavior of coils and magnets is so much easier in the linear way.   
As basic unit I use a shake flashlight. The tube with the coil and magnet; all is there to make a linear actuator and generator.
The setup of the project is done at a wooden board of 40 x 40cm. The 'flashlight' is positioned in the middle and rest upon
a piece foam plastic for muting. At both sides of the magnet i glued 2 sticks of fiberglass for future experiments. Above the
coil I made a strip iron, from a transformer core, for lifting the magnet. A kind of magnetic bearing. In the video I go to show
the effect on the system. No transistors or IC's are used, only 2 reedcontacts, 1 relay, some diodes, led's and resistors.
Less is more! Anybody can make this project to explore electromagnetism at the kitchen table. More info is on the go.
Berto

[Berto3]

In an earlier stage I did some experiments with a 555 IC oscillator as driver for a relay with 2 change-over switches.
Frequence and pulswidth can be changed. In the next video I will show some effects on the movement of the magnet
by this circuit. You have to place bumper magnets (M1 and M2) to regulate the swing of the magnet.

[Berto3]

Making electromagnetic coils is no easy job. I made a simple coil winder from a fishing reel.
With just some aluminium strips the job is done.
Watch the video how this is done: https://www.youtube.com/watch?v=ns7jTKHjEZY