baby microphone has two leads and SMT component

[NOPE9]

I removed the cover on a microphone for a bluetooth headset.
( IOGEAR GBMHkit )

you can see to images at
http://oh-god.com:5080/dir/microphone/
( imaged using a MacBook built-in camera with magnifying lens  
magnetically attached in front of the camera )

There is a small SMT component between the two leads.
What might this be ?  What kind of mic is this likely to be ?

Gus
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[Spehro Pefhany]

At 03:07 PM 30/10/2009, you wrote:

>I removed the cover on a microphone for a bluetooth headset.
>( IOGEAR GBMHkit )
>
>you can see to images at
>http://oh-god.com:5080/dir/microphone/
>( imaged using a MacBook built-in camera with magnifying lens
>magnetically attached in front of the camera )
>
>There is a small SMT component between the two leads.
>What might this be ?

Looks like a ceramic capacitor.

>  What kind of mic is this likely to be ?
>
>Gus

Probably an electret mike like these ones:

http://industrial.panasonic.com/www-data/pdf/ABA5000/ABA5000CE25.pdf

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@...             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com



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[Alan Smith-10]

Looks like a cap to me...possibly one of the Johansson XY devices, used for electrostatic discharges

--- On Fri, 10/30/09, NOPE9 <yes@...> wrote:

> From: NOPE9 <yes@...>
> Subject: [EE] baby microphone has two leads and SMT component
> To: "Microcontroller discussion list - Public." <piclist@...>
> Date: Friday, October 30, 2009, 12:07 PM
> I removed the cover on a microphone
> for a bluetooth headset.
> ( IOGEAR GBMHkit )
>
> you can see to images at
> http://oh-god.com:5080/dir/microphone/
> ( imaged using a MacBook built-in camera with magnifying
> lens 
> magnetically attached in front of the camera )
>
> There is a small SMT component between the two leads.
> What might this be ?  What kind of mic is this likely
> to be ?
>
> Gus
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>

     

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[Herbert Graf-5]

On Fri, 2009-10-30 at 13:07 -0600, NOPE9 wrote:

> I removed the cover on a microphone for a bluetooth headset.
> ( IOGEAR GBMHkit )
>
> you can see to images at
> http://oh-god.com:5080/dir/microphone/
> ( imaged using a MacBook built-in camera with magnifying lens  
> magnetically attached in front of the camera )
>
> There is a small SMT component between the two leads.
> What might this be ?  

A cap.

> What kind of mic is this likely to be ?

Pretty much ALL mics out there in consumer electronics are electret.
Some of the only exceptions I've seen are things like mics for
Rockband/Guitar Hero.

TTYL

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