3 ms·
Magnetocapacitance
- thesuperbigfrog 7y agoHow it is being used in industrial products: https://youtu.be/aW2LvQUcwqc https://youtu.be/aW2LvQUcwqc
- Jupe 7y agoThanks for sharing - clear as mud now! ;)
- anfractuosity 7y agoInteresting not heard of that before. There's also - https://en.wikipedia.org/wiki/Magnetoresistance https://en.wikipedia.org/wiki/Magnetoresistance along with the hall-effect, which are used for sensing magnetic fields. This is quite a nice video of someone making a DIY hall effect sensor - https://www.youtube.com/watch?v=T1eLp4xfrRo https://www.youtube.com/watch?v=T1eLp4xfrRo
- myself248 7y agoNot tagged as a stub, but it sure could use some love. I wonder whether it's enough of an effect to be useful. Hall-effect sensors are all over in certain types of motors and encoders; might there be cases where they're not suitable and a magnetocapacitive effect would be applicable?
- yummypaint 7y agoThis sounds vaguely similar to how electret microphones work, where the sound waves compress a dielectric and change the capacitance. If you apply a bias beforehand to put some amount of charge q across the capacitor, q=cv so the voltage v measured accross it changes inversely with capacitance. This is probably best for capturing dynamics. An alternative method is to make the device part of an oscillator where its capacitance modulates the frequency. This would be better for precision measurements on a slower timescale. I wonder how the repeatability would compare with a hall probe.
- MichaelZuo 7y agoThis is related to the idea of the memristor https://en.wikipedia.org/wiki/Memristor https://en.wikipedia.org/wiki/Memristor