EEVblog #616 - How Microphone Phantom Powering Works

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Australia EEVblog
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Published on ● Video Link: https://www.youtube.com/watch?v=e5xenXTwAzo


Category:
Vlog
Duration: 20:12
82,275 views
1,748

Doug Ford, former head designer at Rode Microphones explains 48V phantom powering of microphones and how it works.
There is a ton of stuff here:
Electrostatic and electromagnetic noise, differential amplifiers, common mode noise, transformer magnetisation current, JFET differential driver circuits, balanced impedances, phase splitters, miller capacitance and how it matters, and he explains how the Schoeps amplifier topology works.
Forum here: http://www.eevblog.com/forum/blog/eevblog-616-how-microphone-phantom-powering-works/
All the videos in this series with Doug: http://www.youtube.com/playlist?list=PLvOlSehNtuHv98KUcud260yJBRQngBKiw

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Tags:
Phantom Power
microphone
Schoeps amplifier
amplifier
circuit
design
preamplifier
tutorial
transformer
common mode noise
xlr connector
jfet
transistor
48v phamtom power