The vertical type buzzer in order to make groan sound decrease/the earphone

摘要

(57) Abstract Each electromotive part while mobile radio telephone to become vertical to the printed circuit board where the coil is located inside external handset of the mobile radio telephone, is arranged. Through the coil and the etched circuit baseplate which are related to the device by arranging the electromotive part with this method, it is possible to make the electromagnetic coupling with the magnetic field of the pulse electric current decrease which is supplied to the mobile radio telephone transmission amplifier. With the decrease of electromagnetic coupling, it can hold down the noise which accompanies the audio input of the mobile radio telephone/output generally.