provided on an output connector; the high-frequency current results from an electromagnetic wave radiated bya cellular phone.
To accomplish this object, the present invention provides an output connector of a 3-pin type in which three pins, a grounding first pin and second and third pins for signals are penetratingly provided on a connector base comprising an electricinsulator, the first pin being installed at an end of a conductive microphone case of a condenser microphone so as to electrically connect to the microphone case, wherein each of the pins contains a chip type inductor element that inhibits ahigh-frequency current.
According to the present invention, each pin contains the chip type inductor element that inhibits a high-frequency current as a choke coil. This reliably prevents the high-frequency current from entering the microphone case via the pin. It isthus possible to effectively suppress the generation of noise resulting from an electromagnetic wave.
In a more preferable aspect, each of the pins comprises a pin main body penetratingly provided on the connector base, a cylindrical chip holder comprising an electric insulator and having one end attached to an end of the pin main body which islocated inside the microphone case, and a metal cap that covers the other end of the chip holder so as to be electrically insulated from the pin main body, the chip type inductor element is placed in the chip holder, and the pin main body and the cap areelectrically connected via the chip type inductor element.
Further, an elastic conductive material is placed between one terminal portion of the chip type inductor element and the pin main body and between the other terminal portion of the chip inductor element and the cap. Thus, even if an externalstress is applied to the pin, particularly its cap side, the chip type inductor element can be protected from the external stress. Further, a reliable electric connection state can be established.
Moreover, a metal net is used as the conductive material. This makes it possible to reduce the resistance value of the connected part. Furthermore, the metal net can be easily obtained and machined and is inexpensive. This minimizes anincrease in costs associated with the containment of the chip type inductor element in the pin.
An output connector for a condenser microphone, and more specifically, to a technique for preventing an electromagnetic wave of a high frequency generated by, for example, a cellular phone from entering amicrophone case through an output connector.
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Pages: 1 2 Social tagging: Condenser > Connector > Microphone
