Annular core (ring core) for current sensors

摘要

Annular cores for saturation-pulsed current sensors and very high operating frequencies have to be minimised with respect to the number of turns of the control winding and to the core cross-section. According to the invention, the core cross-section can be minimised by using a wire which is made from a low-loss amorphous alloy having a diameter of less than or equal to 50 mu m and which is wound in at least two layers.