Power supply

On Fri, 30 May 2008 10:12:01 -0700 (PDT), Marcel put finger to keyboard and composed:

That would be the MP3 player's maximum charging/operating current when connected to an AC adapter.

A USB port can only supply a maximum of 500mA. That would be the MP3 player's maximum charging current when connected to a PC.

Creative's web site claims that the adapter can "charge your ZEN in less than half the time of USB charging". This begs the question, does the MP3 player need to detect when it is connected to a USB host in order to limit its current demand? Would this mean that a dumb 500mA adapter would be overloaded?

ZEN Power Adapter:

- Franc Zabkar

From what you are indicating, your power supply is under sized. The voltage is correct, but there is another very important issue. If your unit is asking for a supply of 2.4 Amps, and your supply is able to only put out 400 ma, there will be a problem. Your supply will not last very long.

When your unit is in a USB port, it probably can sense that and the limitations are regarded. When you connect the external supply, it will expect a very different spec.

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JANA _____

We bought a Creative ZEN V mp3 player. It comes with a USB-cable to charge the li-ion battery through a pc. I want to charge this player with a power supply (220V in). I think the ZEN needs 5 V at 2.4A (max) it says at the internet. I do have already a power supply witch says: input 100-240V-50/60Hz 120mA, output 5V === 400mA. Is this save to use??? Will it work?

Thanks for helping

Marcel