Magnetic Pendulum 

5:16

Amazing, I love it. It really works . Once my pendulum start oscillating in a Perfect harmonic movement I was amazed. Thanks a lot

What an amazing circuit! Great for learning! Thank you very much for the schematic at the end and the component values. You are Very kind.

I am so happy that you take the time to actually describe verbally how to actual make the circuit you explain in detail how to make the circuit and project so thank you very much for that

Indeed that cool device is the basics for a brushless motor. It's all about timing and that cap/resistor = delayed discharge approach was most brilliant...

You don't need a Reed switch or any other sensor to drive the magnetic pendulum. You can use the coil as sensor and actor of the circuit. As the magnet passes the coil it induces a voltage in one direction during approach to and in the other direction during detachment from the coil. A comparator can detect the detachment signal and trigger a pulse to push the magnet away from the coil. I have used a micro-power dual op amp as comparator and monostable multivibrator and a low power n-channel MOSFET as switch for the electro magnet. In case that it doesn't push you simply have to change the coil wires on the connectors and it works.

Ludic , you have solved my problem of 20years, a night mare really! I accepted that the Baskaras wheel would never work, but always thought a magnetic nudge would help (garden sculpture using bicycle wheels in frames) I imagined magnets on the rim and now I need your input, John from Oz

That capacitor takes hugh currentspikes and waistes energy while in fact short shortcircuits youre powersupply where that waiste appears as unnescesairy heat.

Thanks for all the interesting videos. I used to sell battery powered pendulum clocks with that type setup but they ran off an AA battery, the pendulum was obviously just for looks.

Your videos are great. Your circuit descriptions on how it works are easy to understand.

Great idea of adding the cap.

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Alternative... Use a tungsten weight with a steel rod through it for your pendulum. Use the magnet to attract (accelerate) the rod until it is vertical. Then allow the magnetic field to collapse. You can recapture some of the energy from the coil in a capacitor to be use in another circuit.

you can build it with hallsensor and condensator , just 2parts also ... , the hallsensor have also a intern little transisot driver , i like all your videos

It's intriguing to see the pendulum inherently want to speed up. Obviously, the speed at which the magnetic field is passing through the coil, generates more voltage for the cap to store. More zap from the cap...more magnetism in the coil upon discharge : ) Thanks Ludic !

Very Nice! It might not be the most efficient, but it works really well and is easy to build yourself!

Very helpful for solenoid lick I want to make on my back door...

Interesting one.. At some point when pendulum made full rotations i was expecting the counter wait to fly away ☺

Felicitari pentru sistem o aplicatie buna cred ca sti de la cine🎉

Thank you for sharing your ideas. Great work and circuitry!