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echo: pro_audio
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from: MARTIN HILL
date: 1995-04-08 01:06:00
subject: microphone power supply

Hi everyone.  Got a slight question here.
How do you make a simple power supply for a microphone?  I have a Sony
Professional Walkman that has a small pair mic.  It will only work in
the Walkman and my (also Sony) vido camera.  On other equipment, the
signal is to faint to record.  A quick circuit diagram in ascii will
suffice.  Both the Walkman and the Vido camera say "plug in power" next
to the mic jack so I figure it is some kind of phantom power-type thing.
If I connect a lead to the mic jack it shows about 1.5 VDC on my
voltmeter in record mode.
Also does anyone have a circuit diagram for a transformer to convert
standard coax cable to 3 pin XLR?  I want to build one into a small
project-thingie.
... Pentium:  Housing with central heating built in.
~~~ ReneWave v1.00.b3a+
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