A power transformer is a critical component in the electrical grid, responsible for stepping up or stepping down voltage ...

Careful selection is vital, with in this case a toroidal mains transformer and good quality capacitors being chosen. The choice between a linear power supply such as this one and a switching ...

Even with the kinds of coils used in chokes and transformers for ham radio ... to pass a small spool of magnet wire through the toroid’s core while simultaneously rotating the toroid to spread ...