NewtonTalk.net April 2009 archive: Re: [NTLK] Jaggies with adapt

From: Ryan Vetter <physicalconstants_at_yahoo.ca>
Date: Wed Apr 29 2009 - 21:53:45 EDT

This is actually common and not something to be too alarmed about - assuming it is not happening when batteries are in.

In the Newton's Law book, the authors actually discuss this problem. The reason this is happening is that there are more variable currents when plugged into AC power than with batteries. The fluctuations in current cause the digitizer in the screen to mis-localize the stylus, in this case ever so slightly. This would also explain why it happens more as you move your stylus towards the power source.

In short, the Newton was not necessarily designed to be used whilst tethered to AC power. Just get Eneloop rechargeable batteries and and battery tray for your Newton, or obtain a rebuilt battery pack.

All the best,

Ryan

----- Original Message ----
From: Andy Hill <adhill@fastmail.co.uk>
To: newtontalk@newtontalk.net
Sent: Wednesday, April 29, 2009 1:48:49 PM
Subject: [NTLK] Jaggies with adapter

Hi there
Whenever I plug the adapter into my MP2000 instead of using batteries I
get a small case of the jaggies. Nothing major but definitely noticeable
and gets worse the higher up the screen towards the plug end I write. If
I pull the adapter out it stops happening. It's only a minor irritation
as I don't use the adapter much.
I just wondered if anyone else had experienced this.
Thanks

Andy

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Re: [NTLK] Jaggies with adapter