Microphone phantom power supply? - condenser 48v
If I were a 48-V power supply for condenser microphones'm building, should the stability of the output voltage? What was my mistake as in 48.0 + / - X-volts for a solid, functional?
Monday, February 15, 2010
Condenser 48v Microphone Phantom Power Supply?
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2 comments:
Some 24-volt phantom power only to draw, and most microphones work very well.
Normally there is a high value (~ 50k to 100k) resistor in series with phantom power and XLR, and is used for the delivery of audio isolation, and limit the current (~ 5 mA). That is the key - so make sure there are some tensions above 15 V @ 5 mA, * AT * the micro-(a man with a normal condensder FET amplifier).
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You do not need energy, extremely precise, because the signal can be regarded as a voltage difference. An error of + / - 5% is very good.
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