Hi All!

Hope someone can help me here

I keep paying over the odd for power supplies from a well known
components distributor, around =A320 to =A330 just for 12V 500mA DC plug
pack, you know, the ones which come with the variety of connectors for
plugging in to various equipment such as personal CD players.

Does anyone have any idea where I can buy small quantities (say 20 at a
time) of 12V 500mA to 1A DC REGULATED power supplies? I also need the
option of using UK or US mains outlets, so I like the idea of the
laptop style ones that take the figure of eight connector.
Thanks for your time!

Richard

On 23 Jan 2005 16:05:11 -0800, "Scottiedog"
wrote:

Hi All!

Hope someone can help me here

I keep paying over the odd for power supplies from a well known
components distributor, around =A320 to =A330 just for 12V 500mA DC plug
pack, you know, the ones which come with the variety of connectors for
plugging in to various equipment such as personal CD players.

Does anyone have any idea where I can buy small quantities (say 20 at a
time) of 12V 500mA to 1A DC REGULATED power supplies? I also need the
option of using UK or US mains outlets, so I like the idea of the
laptop style ones that take the figure of eight connector.
Thanks for your time!

Richard

Jameco below has a lot of power supplies.

http://www.jameco.com/

Try a computer vendor who takes trade-ins.

A non operative unit is usually very cheap and the Power supply may still be
working.

You get 12 v. and lots of 5 v capability from a ATX machine.

Not a lab supply but reasonably well regulated

Poppa J

I wanted to use an ATX power supply to provide 12vdc to car radio in my
house, but was told that it would not operate unless it was physically
connected to a motherboard.

Is there a way to use it without it being connected to a motherboard?

Thanks.
"Dick Johnson" wrote in message
...
Try a computer vendor who takes trade-ins.

A non operative unit is usually very cheap and the Power supply may still
be
working.

You get 12 v. and lots of 5 v capability from a ATX machine.

Not a lab supply but reasonably well regulated

Poppa J

On Wed, 26 Jan 2005 15:03:02 +1100, cb wrote:
I wanted to use an ATX power supply to provide 12vdc to car radio in my
house, but was told that it would not operate unless it was physically
connected to a motherboard.

Is there a way to use it without it being connected to a motherboard?

Sure, not a problem. Two requirements...

First the power supply will need a reasonable load to operate properly.
I attach one of the connectors to an old disk drive that draws an amp or
two of +5v and also an amp or two of +12v. Works well.

Second, one of the wires on the ATX connector needs to be connected to
ground (also known as "common") to turn on the power supply. This wire
is in the middle of the connector, and a ground is adjacent. The pin
number is 14, and the wire is supposed to be green (and the ground
black). I usually use a little pair of spring-closing tweezers to
connect the two.

Here is the google "lucky" reference for a pinout diagram:
http://xtronics.com/reference/atx_pinout.htm

sdb

--
Wanted: Omnibook 800 & accessories, cheap, working or not
sdbuse1 on mailhost bigfoot.com

Hi, I used a 12V lamp from a car (25 watt) or similar for the load on my
power supply, used a cable tie to hold it on the inside of the case behind
the vent slots.

--


Thanks, Kiwi Pete.

"cb" wrote in message
...
I wanted to use an ATX power supply to provide 12vdc to car radio in my
house, but was told that it would not operate unless it was physically
connected to a motherboard.

Is there a way to use it without it being connected to a motherboard?

Thanks.
"Dick Johnson" wrote in message
...
Try a computer vendor who takes trade-ins.

A non operative unit is usually very cheap and the Power supply may
still
be
working.

You get 12 v. and lots of 5 v capability from a ATX machine.

Not a lab supply but reasonably well regulated

Poppa J