[NTLK] Power supply check method

Victor Rehorst victor at chuma.org
Thu Mar 31 08:58:42 PDT 2022

I just checked my own Newton 9W adapter with my multimeter, and it read 

Newton 2x00 and eMate 300 units have a 9.1V zener diode protecting the 
power input circuit. It's been well documented that input voltages over 
7.5V run a high risk of blowing the zener diode, at least.

Don't use it!


On 2022-03-31 04:42, Vladislav Korotnev wrote:
> Hello list, nice to see everyone still around.
> After a long time I have suddenly got a chance to give my home a visit and so decided to
> go ahead and power on my gear, including the Newts that I had over the past years.
> However when checking with a multimeter the Newton 9W Power Adapter, labeled as 7.5V
> output, produces a 9.2V open-circuit output voltage.
> Is it safe to use or did it go bad over the years of being unused?
> Thanks and best regards
> ----------------------------------------------------------------------
> http://newtontalk.net
> http://twitter.com/newtontalk

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