Electret Mic, Quick & Dirty for PC

tommy_o · 20th June 2010, 03:58 AM

Hello there,

I'm trying to throw together a workable PC mic for skype and the like. I picked up a Radioshack mic element to put together, but need some advice on a simple circuit to use. The only lead I have is this one, but wanted to ask advice before I put it together. Does this circuit seem appropriate for my application?

Thanks everyone.

Th3 uN1Qu3 · 21st June 2010, 02:34 PM

Your soundcard already has the required polarization voltage on its microphone input. You need to do little more than solder two wires and a jack. On the mike, one of the leads is connected to the case. That is gonna go to jack ground. The other lead connects to the tip of the jack. Preferably use a mono jack if your soundcard has a stereo microphone input, so it detects it as such instead of playing the mike in the left channel only. That's all really.

tommy_o · 22nd June 2010, 02:22 AM

The first mic I put together from a salvaged element worked easily with just two wires and a jack, but this Radioshack element didn't. When connected, I could record audio but it was so quiet that I could not reasonably amplify it with software to regular listening levels even for Skype calls. Oh well, I'll put together a proper one in the coming weeks. Thank you though.

20th June 2010, 03:58 AM	#1
tommy_o diyAudio Member Join Date: Oct 2009	Electret Mic, Quick & Dirty for PC Hello there, I'm trying to throw together a workable PC mic for skype and the like. I picked up a Radioshack mic element to put together, but need some advice on a simple circuit to use. The only lead I have is this one, but wanted to ask advice before I put it together. Does this circuit seem appropriate for my application? Thanks everyone.

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21st June 2010, 02:34 PM	#2
Th3 uN1Qu3 diyAudio Member Join Date: Feb 2010 Location: Bucharest	Your soundcard already has the required polarization voltage on its microphone input. You need to do little more than solder two wires and a jack. On the mike, one of the leads is connected to the case. That is gonna go to jack ground. The other lead connects to the tip of the jack. Preferably use a mono jack if your soundcard has a stereo microphone input, so it detects it as such instead of playing the mike in the left channel only. That's all really.

22nd June 2010, 02:22 AM	#3
tommy_o diyAudio Member Join Date: Oct 2009	The first mic I put together from a salvaged element worked easily with just two wires and a jack, but this Radioshack element didn't. When connected, I could record audio but it was so quiet that I could not reasonably amplify it with software to regular listening levels even for Skype calls. Oh well, I'll put together a proper one in the coming weeks. Thank you though.

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