Month: May 2021

161 Magnet and Coil

The easiest way to make sense of the induced voltages is to first figure out the how the magnetic flux linkage (of the coil) varies with time. Obviously, the flux linkage is strongest when the magnet is centred with the coil.

1 Fall Through

(a) magnet approaching coil
(b) magnet is centred with coil
(c) magnet left coil

2 Bungee Dip

(a) magnet at the top
(b) magnet at the bottom
(c) magnet at the top

3 Aligned

(a) magnet at the top
(b) magnet centred with the coil
(c) magnet at the bottom
(d) magnet centred with the coil
(e) magnet at the top

4 Cross-over

(a) magnet at the top
(b) magnet centred with coil
(c) magnet at the bottom
(d) magnet centred with coil
(e) magnet at the top