Sandman
In article <3u33t9hp8pgarkammqojuln1k13hb5s8m4@4ax.com>, Eric Stevens wrote:

The battery is not a PSU either,

Whisky-dave
A battery can be said to be suplying power to the device.

Sandman
Supplying power != Power supply. Then again, it was Eric's claim initially, and he is a laymen so it isn't odd that he would mix these things up.

Eric Stevens
Apart from the fact that I probably have had a far better technical education in these matters than have you

Sandman
Haha, you're a hoot!

Eric Stevens
and that I have spent more time fiddling with electrical and electronic devices than you have been alive, I would not be so foolish as to claim that a device which supplies power is not a power supply. I don't know why you persist in this inanity.

Sandman
See what I mean? This reminds you of your "black box" laymen analogy of the word "protocol". When you don't understand how things work, you use the simplest words. It's akin to you saying "Eh, it does stuff, and then voila, power". :-D

the PMIC (power management integrated circuit) chip in the iPad is a the PSU.

Whisky-dave
That is the unit it is NOT the power supply as it doesn't have any power

Sandman
A PSU never has any power. A PSU has a power input and a power output. It never has any power of its own.

Eric Stevens
I can just see you plugging your car into the electrical main supply to enable you to start it. Either that or you get the local kids to give it a push.

Sandman
A battery is a power *SOURCE*, just as your wall socket is a power *SOURCE* (or rather, the power plant that produces the power). A PSU takes power from a power source and regulates it for the load. It does not - I repeat - it does not have any power on its own.

You're way out of your league here. If you want to think a battery is a PSU, go right ahead while I'll laugh my ass off.