Prs 505 - Sony md walkman: can share charger ?
Posted 09 July 2011 - 04:16 AM
I have a prs 505 sony reader. Charging with the supplied usb cable is, sometimes, not so handy.
So I am wondering if I can use the charger includer with another sony product I have, the minidisc
walkman MZ RH1.
In fact I've already tried but the reader does not get charged ..
any suggestion ?
Posted 09 July 2011 - 08:27 AM
I am surprised that the 800 milli-amps is too low to charge your device. I know that I use a Kensington iPhone charger at work to power and charge my RH1, so it is unlikely that the RH1 is expecting some sort of signal from the charger other than the +5V. It is possible that your reader is looking for some signal to identify the charger. This is something Sony would do, Dell does it for their laptops.
Is the USB cable for the reader the standard larger connector on one end and the mini-USB connector on the other end? Will the reader charge from the USB port on a PC or Mac? I suspect not as USB 2.0 is limited to 500 milli-amps as a current supply.
Posted 09 July 2011 - 09:46 AM
The RH1 charger is an odd one. I have some devices that need to charge by USB (no dedicated power jack), and they won't work either with the RH1's charger, though they are fine with a $10 pocket charger from the local store.
I'm sure there are folks here who can explain this - but I think we have to live with the fact at least for now, or until someone makes a little (adapter) kit.
However you can get a $10 charger that will charge the reader through the round charge socket.
There's no way to tell what specs will work, so you must go into a store and try it. Or at least buy from someone with a good return policy.
Hope this helps.
Posted 10 July 2011 - 07:59 AM
The output is 5 V and 800 mA.
Spec of the reader tells 5.2 V. May this little difference (.2) explain the problem?
>Is the USB cable for the reader the standard larger connector on one end and the mini-USB connector on the other end? Will the reader charge from the USB >port on a PC or Mac?
Yes it is the connector USB standard on one end and mini usb on the reader side. The reader charges perfectly from a laptop running vista.
The only problem is that sometimes I don't want to switch on the laptop only for charging (for 4 hours...) the reader ...
>However you can get a $10 charger that will charge the reader through the round charge socket.
>There's no way to tell what specs will work, so you must go into a store and try it. Or at least buy from someone with a good return policy.
Is this kind of testing safe for the reader ?
I mean: it is not possible to damage the reader trying an incorrect charger isn't it ?
thanks to both of you for sharing your experience
Posted 10 July 2011 - 08:54 AM
Voltage variations won't do it. The problem is more than that - has to do with the way USB support (in the device) accepts a charge. Forget the USB socket.
Posted 10 July 2011 - 04:41 PM
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