The Common Way Of Power Supply For Microphone

- Sep 28, 2018-

The phantom power supply is the most commonly used power supply in today's professional microphone field. The phantom power supply was invented by telegraph engineers. They use a balanced transmission line as a conductor, and the earth as a conductor to form a signal loop, which saves a wire. Since the power supply transmits a common mode signal, there is no influence on the differential mode signal on the balanced transmission line. Therefore, even if noise enters the power supply, it will not affect the transmitted signal.



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