Frequency dependence of output voltage generated from bundled compound magnetic wires

The output voltage generated from bundles of twisted Vicalloy wires was stu died. When the magnetically soft layers of the wires were reversed by an ap plied external magnetic field, a pulse voltage, owing to a large Barkhausen jump, was induced in a search coil wound around the wires. The output did not depend on the exciting frequency of the applied field for the bundled w ires with n (number of bundled wires) <5. The frequency dependence for n = 10 was attributed to the demagnetizing Held in the thicker shape of the bun dle. The bundled wires of n = 25 exhibited dispersed peaks in output wavefo rm due to a self-biasing effect, which was advantageous for obtaining a rec tangular output waveform.