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If it's a dynamic (moving coil) microphone you shouldn't have to use aI want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
On Tue, 19 Apr 2005 15:59:14 GMT, "Radio Man" <puns@verizon.net
wrote:
I want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
If it's a dynamic (moving coil) microphone you shouldn't have to use a
capacitor at all.
--
John Fields
Professional Circuit Designer
I want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
If it is an electret type, you will need a phantom power circuit.
"Radio Man" <puns@verizon.net> wrote in message
news:mV99e.34101$hB6.25763@trnddc06...
I want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
If it is an electret type, you will need a phantom power circuit.
Basically, the mic - is ground
The mic + connects to a resistor. The other end of the resistor connects
to
the battery.
The exact value depends on the voltage you supply and the current you want
to provide
but something like a 3k would be a start and 1.5 volts.
To extract the audio, connect a 1uF or so capacitor to the mic+ / resistor
junction and send
this to the sound card.
look here:
http://www.eclectic-web.co.uk/index.php?jump=http://www.eclectic-web.co.uk/mike/electret_a.htm
---Since i'm presently using an electret mic which derives it's power from my
computer, i thought i would need a blocking capacitor for a "moving coil"
mic?
"Radio Man" <puns@verizon.net> wrote in message"Radio Man" <puns@verizon.net> wrote in message
news:mV99e.34101$hB6.25763@trnddc06...
I want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
"Lord Garth" <LGarth@Tantalus.net> wrote in message
news:faa9e.442$l45.5@newssvr12.news.prodigy.com...
If it is an electret type, you will need a phantom power circuit.
Basically, the mic - is ground
The mic + connects to a resistor. The other end of the resistor
connects
to
the battery.
The exact value depends on the voltage you supply and the current you
want
to provide
but something like a 3k would be a start and 1.5 volts.
To extract the audio, connect a 1uF or so capacitor to the mic+ /
resistor
junction and send
this to the sound card.
look here:
http://www.eclectic-web.co.uk/index.php?jump=http://www.eclectic-web.co.uk/mike/electret_a.htm
Gotcha! first that would be very odd for any Sound Blaster compatible toGarth,
My question refers to a "Dynamic Mic (Moving Coil),
not an electric mic!
"Radio Man" <puns@verizon.net> wrote in message
news:mV99e.34101$hB6.25763@trnddc06...
I want to experiment using a dynamic mic
with my computer. I believe i would have to
connect a capacitor in series with the hot or negative
side of the mic? Also what type & value of cap?
"Lord Garth" <LGarth@Tantalus.net> wrote in message
news:faa9e.442$l45.5@newssvr12.news.prodigy.com...
If it is an electret type, you will need a phantom power circuit.
Basically, the mic - is ground
The mic + connects to a resistor. The other end of the resistor
connects
to
the battery.
The exact value depends on the voltage you supply and the current you
want
to provide
but something like a 3k would be a start and 1.5 volts.
To extract the audio, connect a 1uF or so capacitor to the mic+ /
resistor
junction and send
this to the sound card.
look here:
http://www.eclectic-web.co.uk/index.php?jump=http://www.eclectic-web.co.uk/mike/electret_a.htm
"Radio Man" <puns@verizon.net> wrote in message
news:8ha9e.34107$hB6.1278@trnddc06...
Garth,
My question refers to a "Dynamic Mic (Moving Coil),
not an electric mic!
Gotcha! first that would be very odd for any Sound Blaster compatible to
provide power.
They don't so if that is what you have, just plug in the dynamic mic. If
you need to block
DC because your sound card really does supply power, add a series cap...
1uF would be fine
be aware that the low end may suffer a bit since Xc=1/(2*pi*F*C). You
might
simply
reduce the high frequencies a bit to adjust the response.