Magnetisches Aufzeichnungsgeraet

摘要

The multihead recording device and a method of making same wherein a row of energization windings is constructed from a single printed circuit assembly of parallel wavy lines of conductor material on a nonmagnetizable sheet. The sheet is folded concertina fashion to form helices of the parallel wavy lines. A hole is made axially through each helix and a single core piece of magnetizable material is fitted therein. The assembly is thereafter encapsulated in a block of potting compound, with the end of each core and the last turn of the corresponding windings being flush with the recording surface of said block.