Handset microphone

摘要

A handset microphone includes: a microphone unit, a first switch for turning on or off the output from the microphone unit, and a second switch for enabling or disabling the output from the microphone unit; the first and second switches have contacts operated by a magnetic field; the contact of the first switch is closed and short-circuits the output terminals while the first switch is being affected by the magnetic field; and the contact of the second switch is opened and disconnects one of the output terminals while the second switch is being affected by the magnetic field.

主权项

1. A handset microphone comprising:
a microphone unit; a first switch connected in parallel to output terminals of the microphone unit; and a second switch which is a transfer contact switch and is in contact with a normally open contact and a normally closed contact for opening and closing a circuit of the output terminals and output terminals of the handset microphone, wherein
the first and second switches have contacts opened or closed by a magnetic field;the contact of the first switch is closed and short-circuits the output terminals while the first switch is being affected by the magnetic field; andthe contacts of the second switch is in contact with the normally closed contact and connects one of the output terminals of the microphone unit to one of the output terminals of the handset microphone through the second switch while the second switch is being not affected by any magnetic field, and is in contact with the normally open contact and disconnects the one of the output terminals of the microphone unit and the one of the output terminals of the handset microphone while the second switch is being affected by the magnetic field.