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 | @DionResearchLLC | PO BOX 12786 | WINSTON-SALEM NC 27117



On Sat, Sep 19, 2020 at 12:02 PM Randy Reichenbach via People <people@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@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


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