Noise signal suppression coil for supply network filter has signal winding coupled to optical signal device for indicating saturation of magnetic core resulting from asymmetrical noise

摘要

The noise signal suppression coil (7) has a magnetic core (8) and associated choke coil windings (9) for compensating the magnetic flux in the magnetic core, with an auxiliary signal winding (10) coupled to an optical signal device (12), e.g. a LED, for indicating asymmetrical noise signals.