Mechanical Resonance (Projects)

[Magluvin]

Hey Mags,

just noticed this topic!... great demo and idea to start experimenting with mechanical resonance.

I may play around also as vibration is one of my interests which I've not yet taken the time to experiment with.

Thanks for sharing

Luc

Hey Luc

Your very welcome to join in. You come up with a lot of good ideas.

The vid was meant to be very simplified so that anyone could understand my recent idea on resonance. It doesnt seem that we use it much. Except in radio, where the receivers are 'designed' to pull in a minimalist amount so that it can be amplified into something substantial.

I think the ideology of the fact that the pendulum being affected by input that is out of the resonant(even lower multiples) range(Ill call it the dead zone from here on in) is very similar to operating a transformer in the dead zone, and calling it under unity and basing the efficiency scale on that.

Anyway, Im working on some coils to work with here like Brad has done and see what might come of it.

Mags

[gotoluc]

Hey Mag's

Check this out.

Thanks for the idea

How is it we can draw energy from a resonant system,while at the same time,reduce the P/in?.
The video should show all that is required to believe that resonant systems are far more efficient.

I have since made a second system--well same system,but different oscillating arm,where the frequency is higher. It seems that the higher we go in frequency,the more energy we can draw from the system,and the more we reduce the P/in.

I will keep at it for a while,and see how you go with your setup.
It is my guess that you will be able to use less power to run your motor,than it would use running on it's own--they are the results i have gained so far.


https://www.youtube.com/watch?v=7wD6aDzEVdQ


Brad.

P.S--i think your on to a winner here

Great mod of the concept Brad

Reminds me of another topic ... has he showed up yet?

Luc

[Magluvin]

Thought of doing this....

I do a lot of car audio stuff. I have some stock speakers around so I took one apart for its coil and former. Its 4 ohm so I can run an amplifier on it with a sig gen.

So I extracted the coil and cleaned up most of the glued parts. Some of the glues they use are stupid strong. So there will be a bit of that left.

So I just connected a AAA bat to the coil and held it by the mags as seen in the pic and there was surprising pull while tapping the lead on the battery.

So it gave me the idea for some odd reason to try to make the thing control its own freq.  Working on the scheme. Will most likely need a hand start to get the pendulum to reach the reed switch and then it should go on its own.  There are obstacles. like dose the reed trigger a push or pull when activated.  So I thought further and having a pull will work if it is only a pulse. But it needs to not have continuous hold on the pen and also not another pulse on the way back from full extension.

So im thinking of the Tesla igniter patent circuit.  It has a battery, a capacitor and a large inductor all in series, with the addition of a diode here in series. Then you have a low inductance drive coil that is connected across the cap when the reed switch closes. This will allow a pulse to be sent to the drive coil, and while the reed switch is still on, the large inductor charges up. Then when the reed releases, the cap gets charged up. Very simplified solution to the switching problem. Will have to experiment with cap values and large inductor.  Be neat to see the thing swing with maybe a AAA bat.

Going to make coil brackets after I pull apart the other speaker for it coil.  Going to make some standoffs for the mags so the stainless strip is less involved in consuming drive fields.

Mags

[mariuscivic]

Hi guys!
Spent some time with this ideea. All I remember is that when tried to extract something from resonance, it stoped resonating. Keeping the resonance while extracting something tooked a lot more energy than the one produced.
This is the setup used      www.youtube.com/watch?v=H55vrAfmMNQ

[Magluvin]

Hi guys!
Spent some time with this ideea. All I remember is that when tried to extract something from resonance, it stoped resonating. Keeping the resonance while extracting something tooked a lot more energy than the one produced.
This is the setup used      www.youtube.com/watch?v=H55vrAfmMNQ

Hey Marius

Try to use steel strips like I did, or if you can get spring steel, both are better than the plexi.  I have to admit that Milehigh taught me that one as I had used pexi first and the oscillations stopped sooner.  Hysteresis loss I believe the term he used.

Next is to look at my full vid in the second post. You dont seem to be operating the wheel to a speed that hits the freq of resonance of your arms with the magnets.  If you notice that when you spin the wheel slowly, there is a certain amount of movement, then spin a little faster it is nearly the same amount of movement. But when you hit the resonant freq of the arms, of which they will need tuning to be at the same freq, the arms will possibly reach out so far and hit your wheel magnets. So you may have to space the arms out some once you get there.

But I think its possibly in need of higher freq(wheel speed) to get the arms on your setup to be in resonance.  If when you speed up the wheel beyond what you have shown and there is less movement of the arms, and even higher speeds even less, then maybe you are hitting resonance in the vid.  Those are large mags and you just may be finding resonance there due to more mass weight, lower freq.  Not sure.

Thanks for showing that.

Mags