Speaker Power Bracket For PC

  • Thread starter Thread starter CW
  • Start date Start date
C

CW

Greetings! I'd like to power my external PC speakers with my computer
instead of using the bulky AC wall transformer/adapter that they were
shipped with. The wall adapter is rated for +9VDC @ 1A. When I measured the
output with a DMM, I get +12.5 Volts, so I presume the voltage goes way down
once it is loaded. So, what I'd like to do is drill out a card slot blank,
put in a cheap coaxial plug and wire that to one of the +12VDC PS connectors
in my PC. What I don't know is whether or not my amplified speakers can take
the somewhat regulated +12VDC. I really don't want to put a 3 Ohm, 3 Watt
resistor in series with the speakers, and would prefer not to have to build
up a DC to DC regulator circuit (i.e. LM317T). What I guess I'm looking for
is whether or not someone has already done this, and what the results were.
Anyone?
 
Being lazy I used a 8.2V 10 Watt Zenier and the 3? resistor.

I used the LM317T for a digital camera. A real pain in the neck.

Henny
 
I'd like to power my external PC speakers with my computer
instead of using the bulky AC wall transformer/adapter that they were
shipped with.
Click to expand...
. What I guess I'm looking for
is whether or not someone has already done this, and what the results were.
Click to expand...

IMHO, you could do that w/o problem . ..
time ago here in my country a small firm was producing an PC amp
fitting in the 5,25" PC bay ...
 
Greetings! I'd like to power my external PC speakers with my computer
instead of using the bulky AC wall transformer/adapter that they were
shipped with. The wall adapter is rated for +9VDC @ 1A. When I measured the
output with a DMM, I get +12.5 Volts, so I presume the voltage goes way down
once it is loaded. So, what I'd like to do is drill out a card slot blank,
put in a cheap coaxial plug and wire that to one of the +12VDC PS connectors
in my PC. What I don't know is whether or not my amplified speakers can take
the somewhat regulated +12VDC. I really don't want to put a 3 Ohm, 3 Watt
resistor in series with the speakers, and would prefer not to have to build
up a DC to DC regulator circuit (i.e. LM317T). What I guess I'm looking for
is whether or not someone has already done this, and what the results were.
Anyone?
Click to expand...

http://www.bit-tech.net/article/76/

Might be of interest?
 
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