Hello everyone!

I recently bought a Knowles EK-23132-000 electret condenser microphone (http://www.digikey.com/product-detail/en/EK-23132-000/423-1008-ND/458519) and have serious problems wiring it, as this is the first time I am trying to do something similar.

As I suspect, the microphone has to be powered by an external battery and also needs resistor(s) and capacitor(s) connected in order to be functional.

Can someone provide me with a wiring diagram, showing all the connections, battery voltage and capacitor(s)/resistor(s) values??

Cheers,
KostasN

 

Hello,

Did you see this on the given page:
http://www.knowles.com/download/file?p=EK-23132-000.pdf

Bertus

 

Hello,

Did you see this on the given page:
http://www.knowles.com/download/file?p=EK-23132-000.pdf

Bertus

Hello Bertus thanks for the prompt reply.

Yes I have seen this, can you please help me understand what information I can get from that?

Thanks

 

Hello,

On the digikey page is given a supply voltage of 1.3 - 10 volts.

I assume the - of the powersupply goes to the NEGATIVE TERMINAL and the + of the powersupply goes to the POSITIVE TERMINAL.
The OUTPUT TERMINAL will give the signal, I would connect it via a capacitor to the amplifier.

Bertus

 

Thank you again for your help Bertus.
In page 2 of the same document Output Impedance Ohms with minimum, nominal and maximum values are stated. Are these relevant to any resistor that needs to provide the 1.3 V dc voltage drop from a supply of 10 V dc?

 

Hello,

Have a look at fig 8 on the following page:
http://sound.westhost.com/project93.htm

Bertus

PS I must say that the choosen microphone is very expensive.

 

Thank you very much Bertus, you are the man! As for the cost, I don't really care as long as it works!