AC adapters

[im]

HI,
I own a t41 thinkpad, i got with it two ac adapter- one bigger with a led and the other twice smaller, i can't figure out whats the difference between them, they both seem to function equally, does sombody know whats the difference?

[jdhurst]

You need to post the model number and type of your T41, the FRU number for each adapter, and the output voltage and amps of each adapter. The T41 generally (if not always) needs a 72 watt adapter at an output of 16 Volts at 4.5 amps. I have not seen an adapter with an LED except for some very old ThinkPads. ... JD Hurst

[edelrc]

If the adaptor is no an IBM adaptor designed for that ThinkPad model, to be compatible it needs to fullfil these parameters;
- DC output with + in the inner layer and - in the outer layer of the plug
- 16V output
- 4.5A output (The power will always be 72W because 16V x 4.5A = 72W)
- Stability on any parameter mentioned above. (Usually electronics can tolarate up to a 10% in the margings) Any modern adaptor of any laptop brand should be ok with this requirement.

[slagmi]

Ditto jdhurst
the one with the LED is old.
though you should be ok using it as a spare.
sounds like that's what the previou owner did.

[im]

Thanks...
Its starts to make sense.

[jdhurst]

I just looked at the old adapter I have with an LED. It is from a ThinkPad i (2611-410), has a 19 volt 2.4 amp output, and has a noisy output (when viewed on an oscilloscope) that is not healthy for modern electronics. As I noted earlier, please post the output specs of your adapters. The one I have and was thinking of earlier is NOT proper for any T. Do not use that one, even as a spare. ... JD Hurst

[rhema83]

While we are on the topic of adaptors, does anyone use the iGo Juice or Power Everywhere? Are they reliable and stable? I plan to get one because I take 12-time-zones flights and don't want to be bored to death. (I've taken a few and they are unbearable!)