CONDENSER MICROPHONE UNIT AND CONDENSER MICROPHONE
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United States of America Patent
Stats
-
N/A
Issued Date -
Jul 14, 2016
app pub date -
Jan 6, 2016
filing date -
Jan 6, 2016
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A condenser microphone unit and a condenser microphone are provided that can prevent intrusion of RF current into the condenser microphone unit. The condenser microphone unit includes an electroacoustic transducer 30 including a diaphragm 32 and a fixed electrode 33 that constitute a capacitor; a printed circuit board 50 including an impedance converter 40 connected to the electroacoustic transducer 30; and a unit case 20 having bottomed tubular shape and an opening, the electroacoustic transducer 30 and the printed circuit board 50 being installed in the interior of the unit case 20, a hole being formed on the printed circuit board 50 across the thickness of the printed circuit board 50, a first filter element L being inserted into the hole 50h, the first filter element L being connected to the impedance converter 40.
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