[AudioI] zero soundcard with phantom power

[Matt]

This is all good information. I got a bit more to add.

The zero will give you power for an electret capsule microphone - 
typically < 3V power.

The analogue breakout standard (AI-ABS) implements the 48V phantom power 
for you : 
https://github.com/Audio-Injector/AudioInjector-Analogue-Breakout-Standard

https://github.com/Audio-Injector/AudioInjector-Analogue-Breakout-Standard/blob/master/AudioInjectorAnaBreakStdv1.pdf

The power header gives > 48V power. You will want to regulate this with 
a 48 V linear regulator before using it.

Our first soundcard to implement the AI-ABS is the Isolated soundcard 
(already available for purchase). You can design a preamplifier for this 
board which uses the phantom power. Alternatively you can wait for a 
later preamplifier release which will implement an optional phantom 
powered microphone preamplifier.

Let us know which direction you plan to go, plenty of Audio Injectors 
here with great suggestions and willing to help.
Matt

On 20/9/20 3:00 am, Francois Dion via People wrote:
> Behringer PS400 is about $30 street price and does the job. Provides 
> about 30mA on 48V. Can also power phantom 12V.
>
>
> Francois Dion, Chief Data Scientist
> Dion Research LLC | Analytics, Data Science & Visualization
> dionresearch.com <http://dionresearch.com> | @DionResearchLLC | PO BOX 
> 12786 | WINSTON-SALEM NC 27117
>
>
>
> On Sat, Sep 19, 2020 at 12:02 PM Randy Reichenbach via People 
> <people at lists.audioinjector.net 
> <mailto:people at lists.audioinjector.net>> wrote:
>
>     That would be nice, right?  You could certainly add phantom power
>     to a Zero card, but understand that Pro mics like the NT5 require
>     48VDC phantom power, and the Pi and AI Zero just have 5v and 3.3v
>     onboard.
>
>     So, you could add a separate phantom power supply. Plenty of
>     examples of that if you google.
>
>     Or you could use a buck/boost converter to take the 5V and boost
>     it to 48.  Mics only require single digits of mA, so the power
>     requirement is actually rather low.
>
>     Here's an example of a 9v to 48v.
>     https://www.electronics-lab.com/project/9v-to-48v-dc-dc-converter/
>
>     The spec for that regulator:
>     https://www.sparkfun.com/datasheets/IC/MC34063A.pdf
>
>     suggests it'll work down to 3v, so there you go.
>
>     OR it's likely that AudioInjectors Preamp board would have you
>     covered, though strangely, it doesn't mention phantom power.  As
>     much as I love my AI cards, I find the available info about them
>     to be rather lacking.
>     http://www.audioinjector.net/xlr-preamp
>
>
>
>     On Sat, Sep 19, 2020 at 1:55 AM Serge Ortega via People
>     <people at lists.audioinjector.net
>     <mailto:people at lists.audioinjector.net>> wrote:
>
>         Hi everybody
>
>         I would like to know if it is possible to use a standard electret
>         microphone (like Rode NT5 for instance) with a zero soundcard ?
>         Is the power like a phantom ?
>
>         Thanks for your answer
>         Sergio
>
>
>         -- 
>         People mailing list
>         People at lists.audioinjector.net
>         <mailto:People at lists.audioinjector.net>
>         https://lists.audioinjector.net/mailman/listinfo/people
>
>
>     -- 
>     People mailing list
>     People at lists.audioinjector.net <mailto:People at lists.audioinjector.net>
>     https://lists.audioinjector.net/mailman/listinfo/people
>
>
-- 
Join the community discussion forum :
https://lists.audioinjector.net/mailman/listinfo/people

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.audioinjector.net/pipermail/people/attachments/20200920/3bd30939/attachment-0001.htm>