Hi Jason,

this has probably been answered but if it hasnt ...

Disclaimer.  The following statement are correct as far as I am aware,
however there may be some errors.

The device will only draw the current it requires if you apply the correct
voltage.

In Australia for example the GPO (General Purpose Outlet) in houses ie the
wall socket are generally rated at 240V with a maximum current draw of
10amps.

Here you can clearly see that you can plug in a huge variety of devices that
vary in the current they draw (and power they consume).  However, they are
all designed for 240V operation but will only draw the current they require
(except under fault conditions).

Again with a car battery with a nominal voltage of 13.8 volts can have a
variety of devices from the starter motor which draws significant current to
the clock which draws only a small amount current but they are all connected
directly to a 13.8 volt battery.

You just need to ensure that the current that your power supply can provide
is greater than or equal to the devices current draw (and that the voltage
is correct.

It is a very different story if you have a power supply designed to provide
x volts and you want to connect a device that is designed to accept y
volts.  Here you will need to add some additional devices to correctly
regulate the voltage (or current depending on the device)


Cheers Justin


On 24 April 2010 10:30, Jason White <whitewaterssoftwareinfo@gmail.com>wrote:

> ya ... sorry about that
>
> On Fri, Apr 23, 2010 at 8:24 PM, cdb <colin@btech-online.co.uk> wrote:
>
> > I think his question is meant to read something along the lines of,
> >
> > I have a device that is capable of providing 5v @ 100mA. I need to
> > connect this to a device that requires to be supplied with 5v @10mA
> > how do I reduce the current?
> >
> > Colin
> >
> >
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> > cdb, colin@btech-online.co.uk on 4/24/2010
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