Inductive sensor - have coil will travel

9-28 — elektor september 1982 inductive sensor Most readers will remember the old principle of induction, forced upon us by enthusiastic teachers in our school days. No? Never mind we had to look it up as well! The universally accepted principle is that when a current flows through a conductor, a magnetic field is created around it. Winding the wire (conductor) into a coil will mean that the magnetic field of each individual winding is added to the relatively homogeneous field at the core of the completed coil. The result is that a type of electro-magnet is created which has a negative and a posi- tive end or pole, very similar to a perma- nent magnet. On we go with the physics lecture! The coil"s inductivity can be calculated by using the formula: L = Po • pr • N2 • D/I. So, besides the number of windings N Inductive sensor have coil will travel Anyone wishing to measure something by electronics means will often require some kind of converter. This article introduces a di...