The iron wire is plugged into a variac. Typically 70 or so volts is required. DO NOT turn the variac on with the voltage turned up - you will blow a fuse. DO NOT touch the wire - it is HOT both ...

Recall the 60-lb. square bales barely restrained by soft iron wire. The wire-tie baler changed more than just how we fed forage; it created a whole family of applications for the wire byproducts.

This article will discuss three examples of the numerous types of material: silicon steel, soft iron powder and ferrites. We'll also focus on understanding the properties of inductor core material ...