Ideas for using 12-48V phantom power to drive a 3v electret condenser microphone
Not many sound cards I have found have multiple inputs for 3V electret condenser microphones. Maybe that makes sense, since such small mics are often used with headsets and as lapel/lavalier microphones, and those tend to be wireless if you're handling more than one.
Still, it would be fun to make a thingy that converts 48V phantom power to work with an elecret. Actually you can buy such an adapter off the shelf from Røde for about €20. That is probably the sane thing to do:
However many people have thought about and designed their own solutions for this.
- links
- audio - Phantom Power supply for Electret mic - Electrical Engineering Stack Exchange
- Convert 48V Phantom Power to 9V
- This one is more about powering electrets in general, good read! Especially intrigued about just using two batteries in series and that's it:
- Powering microphones
- One of TI's examples is downregulating from 48V for the below circuit:
- LM317HV 60V Input, 1.5A Adjustable Output Linear Regulator | TI.com