Electronic components, namely, capacitors, potentiometers, magnetic heads, slip rings, transformers, inductors, sensors, and resistors

Condenser; magnetic induction coil; magnetic coil; electricity transformer; [ optical encoder; ] electric collectors, namely, slip rings, wound magnetic components; electronic components in the nature of filters; potentiometric sensor; ferrite electronic components, namely, capacitors, filters, position sensors, slip rings, wound magnetic components