[AudioI] Microphone Input impedance?

[Ron]

Hi Matt,

Just a follow up for you and folks reading this thread.   After 
researching how electret microphone elements work,  I found that most 
computer type headsets use an electret microphone element.  A standard 
computer type headset works fine when attached to MIC and PHONES 
connections on the zero.

73,
Ron / W4MMP

On 4/22/2020 01:35, Matt via People wrote:
>
> Right, looks good.
>
> For the mic. Ground goes to the terminal with the solid white 
> silkscreen paint around it. The Red "Microphone" connection goes to 
> the other terminal next to it which has the "+" sign.
>
> On 22/4/20 1:16 am, Ron via People wrote:
>>
>> Hi Matt,
>>
>> We will be wiring the audio hat to a TRRS female connector for the 
>> headset to plug into.  We will use the MIC holes and the phone holes.
>>
>> On 4/21/2020 06:28, Matt via People wrote:
>>> Ok, I think it is an electret microphone.
>>>
>>> Do you have a connector on the headset ? Do you have a link to an 
>>> image ?
>>>
>>> On 18/4/20 1:55 pm, Ron via People wrote:
>>>> Hi Matt,
>>>>
>>>> When I say real microphone,  I mean a microphone of the type that 
>>>> is used in a headset.  Should I use the RCA port or the MIC port?
>>>>
>> -- 
>> 73,
>> Ron / W4MMP
>>
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