[NTLK] Error with Sony power adapter SCP-114

[SonyTEL]

On consumer equipment, as long as you don't exceed 5%, everything is fine 👍 
7.5V + 5% = 7.87V
7.5% - 5% = 7.12V
It's traditional math ;-)

If the input is 7.5V, there is a regulator in the Newton...
Like all electronic devices.

 BrUnO


> Le 20 juil. 2025 à 19:09, Morgan Aldridge <morgant at makkintosshu.com> a écrit :
> 
> There is a well-documented history regarding the fragility of the MessagePad & eMate hardware having _very_ strict power requirements, as Pawel has described. There are some details in the Newton FAQ, including your new suggestion of the Sony adapters:
> 
> <https://newtonfaq.com/newton-faq-hardware.html#IIB7>
> 
> Pawel is correct that anything more than 7.5V is extremely risky for the Newton power circuitry and because many devices are more forgiving with fluctuations, third party adapters are prone — if not likely — to temporarily spike above 7.5V.
> 
> For  some of the technical details, see the "Power Adapter Designer's Guide" which is archived on UNNA:
> 
> <http://www.unna.org/unna/apple/documentation/n2platform/n2-padg.pdf>
> 
> Morgan
> 
> On Sun, Jul 20, 2025 at 12:12 SonyTEL via NewtonTalk <newtontalk at newtontalk.net <mailto:newtontalk at newtontalk.net>> wrote:
>> 
>> A voltage measurement (7.5V) cannot be taken when the device is empty...
>> But when it is connected to the device, i.e. the Newton ;-)
>> 
>> In my opinion, Sony had no intention of blowing up its PlayStation One consoles...
>> 
>>  BrUnO
>> 
>> 
>> > Le 20 juil. 2025 à 16:25, Pawel Piotrowski <newton at indigi.co.uk <mailto:newton at indigi.co.uk>> a écrit :
>> > 
>> > Yes, can be a problem if power adapter deliver higher voltage than 7.5V. Many power adapters do that and they deliver more than nominal without any load. And that what Newton does not like. And that can even break the Newton.
>> > 
>> > The fact that the nameplate shows 7.5V does not guarantee that the multimeter will not show a higher voltage when you do not connect the power supply to any power receiver.
>> > 
>> > 
>> > Cheers,
>> > Pawel
>> > 
>> >> On 20 Jul 2025, at 14:41, SonyTEL via NewtonTalk <newtontalk at newtontalk.net <mailto:newtontalk at newtontalk.net>> wrote:
>> >> 
>> >> 
>> >> There is no error...
>> >> 
>> >> The voltage is 7.5V.
>> >> The current CAN deliver up to 2A.
>> >> 
>> >> If the Newton requires 0.5A, for example, it will only consume 0.5A...
>> >> If the Newton requires 1.2A, for example, it will only consume 1.2A...
>> >> 
>> >> As this Sony power supply CAN deliver up to 2A, it will generate less heat in all cases! And as a result, it will last longer...
>> >> 
>> >> Nothing but advantages!!!  Positive ones ;-)
>> >> 
>> >> BrUnO
>> >> 
>> >> 
>> >>> Le 20 juil. 2025 à 15:22, Pawel Piotrowski <newton at indigi.co.uk <mailto:newton at indigi.co.uk> <mailto:newton at indigi.co.uk <mailto:newton at indigi.co.uk>>> a écrit :
>> >>> 
>> >>> 
>> >>> 
>> >>>> On 19 Jul 2025, at 14:33, Fabrice Braun <f at fabricebraun.de <mailto:f at fabricebraun.de>> wrote:
>> >>>> 
>> >>>> As it was recommended in this list, I bought a (used) Sony SCPH-114 power adapter (European/German version) for my eMate. 
>> >>>> 
>> >>>> But now, when I start my eMate I get this error message: 
>> >>>> 
>> >>>> „POWER The adapter is providing too much power. The battery cannot be charged with this adapter.“
>> >>>> 
>> >>>> Does anyone know, what’s wrong? The orange light on the meat is on.
>> >>>> 
>> >>>> Fabrice
>> >>> 
>> >>> 
>> >>> Hi Fabrice!
>> >>> 
>> >>> I would check if that Sony adapter does not exceed 7.5V (check with any multimeter). If the voltage is even more higher than 7.5V, you have your problem.
>> >>> 
>> >>> The original Apple power adapter for Newton has 7.5V, 1.2A, so the voltage is fine, and the 2A on your Sony shouldn’t be a problem. The only problem (I guess) may be voltage higher than 7.5V.
>> >>> 
>> >>> 
>> >>> 
>> >>> Best regards,
>> >>> Pawel Piotrowski
>> >>> 
>> >>> Worldwide Apple Newton Users Map: http://user-map.applenewton.co.uk <http://user-map.applenewton.co.uk/> <http://user-map.applenewton.co.uk/> <http://user-map.applenewton.co.uk/>
>> >>> 
>> >>> NPDS Server: http://newton1.applenewton.co.uk:8079 <http://newton1.applenewton.co.uk:8079/> <http://newton1.applenewton.co.uk:8079/> (powered by Newton 2100)
>> >>> NPDS Tracker Server: http://tracker.applenewton.co.uk:3680 <http://tracker.applenewton.co.uk:3680/> <http://tracker.applenewton.co.uk:3680/> <http://tracker.applenewton.co.uk:3680/> (powered by Raspberry Pi)
>> >>> 
>> >>> Facebook: https://www.facebook.com/applenewtonfan/
>> >>> Instagram: https://www.instagram.com/AppleNewtonFan/ <https://www.instagram.com/indigi_newton/>
>> >>> Twitter: https://twitter.com/AppleNewtonFan/ <https://twitter.com/indigi_newton/>
>> >>> ----------------------------------------------------------------------
>> >>> 
>> >>> https://newtontalk.net <https://newtontalk.net/> <https://newtontalk.net/>
>> >>> https://bitbang.social/@newtontalk
>> >>> https://twitter.com/newtontalk
>> >> 
>> >> ----------------------------------------------------------------------
>> >> 
>> >> https://newtontalk.net <https://newtontalk.net/> <https://newtontalk.net/>
>> >> https://bitbang.social/@newtontalk
>> >> https://twitter.com/newtontalk
>> 
>> 
>> 
>> 
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>> 
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