Many of these supplies are not internally voltage regulated. Therefore, if
the supply is over rated in its current handling, it may put too much
voltage across the phone. Normally you should be able to use as large a
supply you want, as long as the voltage is correct. Ideally you should use
the correct size of supply, unless the universal one you have is voltage
regulated.

If you can measure the supply output across the phone while it is connected,
this would give you a good indication if its voltage is too high. If you
exceed about 14 Volts across the phone, it can start to do damage by
overdriving the internal components.

--

Jerry G.
==========================


"Deceptor" wrote in message
news:1094541628.320373@webserver...
Hi all, new in here. A friend gave me a cordless Panasonic telephone without
the power source. I picked up
one at a charity shop for $2 and I am hoping it will be OK to use with it.
It was given to me because a couple
of the dial out buttons misbehave a bit. (especially the common two required
for dialing out local calls)
I thought it would be a good idea to take out in the backyard whilst
relaxing having a few beers to receive calls
to save me running into the house to answer calls.
The sticker on the bottom of the phone requires:
Power Source 12V 150mA AC Adapter
The one I bought is: 12V 300mA AC Adapter
Plus the sticker says "Use only with Panasonic AC Adapter" which I'm sure
would be a ploy just to buy
an expensive Panasonic replacement part.
I am assuming it will be OK to use?? Or will it damage the rechargable
battery inside?
Any advice from you electronic guru's muchly appreciated!!!
BTW What is the "oily like substance" between the rubber keypad and the
circuit board?
I have seen this on another one I pulled apart recently which was playing up
so much I couldn't use it.
Thanks
Greetings From Downunder