Acoustic signal source for automobile has interference suppression components mounted on insulating circuit board with contact pads for connection to electrical circuit of acoustic signal source

摘要

The acoustic signal source has an electromagnetic oscillatory drive, employing an armature, a cooperating energizing winding and a current interrupter, inserted in an electrical circuit for the acoustic signal source, provided with one or more interference suppression components (35,36) mounted on an insulating circuit board (22a) with contact pads (29,34a) for connection to the electrical circuit.