300 ac adapter question

retro · 09-27-2009, 09:49 AM

The 300 charges well with the mini usb ac adapter for my phone and mp3 player. The adapter is 5v 1a output and I believe the dumb usb plug adapters are the same.

I have a usb to barrel-end adapter that came with my gps that is 3.3v 110mA. The barrel-end plug fits in my 300 and the red charging light comes on. I can't identify the plug tip type or what the 300 requires and wanted to know if it will damage the 300 to use it? It looks the same as some I've looked at online, but it's black instead of yellow which is what the Sony adapter is. I could use it plugged into my pc without syncing or my usb plug adapter and would be a nice backup.

Anyone know what tip type the readers use?

kenmark · 09-27-2009, 10:00 AM

The readers use a 5.2 V A/C adapter but most users use a cheaper PSP (PlayStationPortable) charger which is 5.0 V and works fine.

Charger tip should be yellow.

I'm not sure if using a lesser voltage will damage the reader or not.

HarryT · 09-27-2009, 10:03 AM

Quote:

Originally Posted by retro

The 300 charges well with the mini usb ac adapter for my phone and mp3 player. The adapter is 5v 1a output and I believe the dumb usb plug adapters are the same.

Are you quite certain that your PRS-300 charges with a USB mains adaptor? Unless the PRS-300 is different, no other Sony Reader does!

retro · 09-27-2009, 10:24 AM

Quote:

Originally Posted by HarryT

Are you quite certain that your PRS-300 charges with a USB mains adaptor? Unless the PRS-300 is different, no other Sony Reader does!

Yep, it does with a usb cable and a usb ac adapter or the mini usb ac adapter that came with my phone.

Juliette · 09-27-2009, 10:34 AM

Quote:

Originally Posted by retro

Yep, it does with a usb cable and a usb ac adapter or the mini usb ac adapter that came with my phone.

Very interesting. Which brand of phone do you have?

HarryT · 09-27-2009, 10:35 AM

You seem to have found the only USB mains adaptor in the world which does work, in that case

. With every other one, the charging light on the Reader comes on, but it does not charge.

MSJim · 09-28-2009, 05:26 PM

retro:
To answer your original question, the plug that fits the Sony PRS, PSP et al is the EIAJ-02. It is an industry standard, and is available from many sources.
The Radio Shack Adaptaplug equliavent is Size B. They also sell a two pack for hobyists (Model: 274-1532 | Catalog #: 274-1532) if you are comfortable with soldering and want to build your own cable/adapter.

09-27-2009, 09:49 AM	#1
retro Groupie Posts: 195 Karma: 245 Join Date: Aug 2009 Location: USA Device: Kobo Clara Blue PRS 350	300 ac adapter question The 300 charges well with the mini usb ac adapter for my phone and mp3 player. The adapter is 5v 1a output and I believe the dumb usb plug adapters are the same. I have a usb to barrel-end adapter that came with my gps that is 3.3v 110mA. The barrel-end plug fits in my 300 and the red charging light comes on. I can't identify the plug tip type or what the 300 requires and wanted to know if it will damage the 300 to use it? It looks the same as some I've looked at online, but it's black instead of yellow which is what the Sony adapter is. I could use it plugged into my pc without syncing or my usb plug adapter and would be a nice backup. Anyone know what tip type the readers use?

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09-27-2009, 10:00 AM	#2
kenmark Addict Posts: 204 Karma: 250000 Join Date: Jan 2009 Location: Great White North Device: PRS-505	The readers use a 5.2 V A/C adapter but most users use a cheaper PSP (PlayStationPortable) charger which is 5.0 V and works fine. Charger tip should be yellow. I'm not sure if using a lesser voltage will damage the reader or not.

09-27-2009, 10:35 AM	#6
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	You seem to have found the only USB mains adaptor in the world which does work, in that case . With every other one, the charging light on the Reader comes on, but it does not charge.

09-28-2009, 05:26 PM	#7
MSJim Bookworm Posts: 104 Karma: 26 Join Date: Sep 2009 Location: Central Georgia, USA Device: PRS-600, Nook STR	retro: To answer your original question, the plug that fits the Sony PRS, PSP et al is the EIAJ-02. It is an industry standard, and is available from many sources. The Radio Shack Adaptaplug equliavent is Size B. They also sell a two pack for hobyists (Model: 274-1532 \| Catalog #: 274-1532) if you are comfortable with soldering and want to build your own cable/adapter.

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