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Anyone know what happens if	by AndyA	2004-12-21 10:36:39
I know what happens when you plug a	by Havoc	2004-12-21 10:52:41
Is there a typo there?	by AndyA	2004-12-21 10:56:46
Nope - the 900ma is what is supplied,	by Havoc	2004-12-21 11:00:54
Weird supply.	by AndyA	2004-12-21 11:06:00
All supplies are like that, aren't they?	by Havoc	2004-12-21 11:10:34
No.	by AndyA	2004-12-21 11:45:37
They supply a certain voltage at _up to_ a certain current. If you try and pull more current the voltage will start to drop a bit and the adaptor may start getting a little too warm. If you pull less current than the rated maximum then everything is happy, the voltage may be a little higher than rated but not by more than a few percent. That is the normal mode of operation. You can also build what is known as a current source, they will supply a fixed current out of their output at whatever voltage (up to a limit) is required to cause the selected current to flow. You will never find any consumer equipment that requires a current source as its power input. They are all fixed voltage inputs. It is physically impossible to build a power supply that supplies a fixed voltage and current into any load you connect to it. That would break Ohms Law. What probably happened to you is that sometimes the outside of the barrel is positive, sometimes it is the negative connection. If you get a power supply that has positive on the outside and connect it to equipment that has negative on the outside things will go pop. All supplies and equipment has a logo on it indicating which way around power should go.
[ Reply ]
Did it really take me 10 minutes to type that?	by AndyA	2004-12-21 11:47:33
Hmm. Not all gear tells you its polarity.	by lonegunman	2004-12-21 14:28:46

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