Messages

1

C1000/3x00 Hardware / Info On Sl-c3000 World Voltage Ac Adapter Specs

« on: April 18, 2005, 02:09:46 am »

Thanks for all your help Omega,

I was able to find an adapter that produces exactly 1000 mA and 4.5 Volts and yesterday charged my Zaurus without any problems. It is not 5.0 V but 4.5 is very close to 5 V, so I hope this will not damage my Zaurus in the long run  

Thanks again for your patient efforts to explain me this charger specs details  

Irfan

2

C1000/3x00 Hardware / Info On Sl-c3000 World Voltage Ac Adapter Specs

« on: April 14, 2005, 03:37:39 pm »

Hi, what you need is a 5volt 1amp power supply with a positive centre tip on the plug.  5v 500mA will probably not be sufficient, especially if you have the zaurus turned on at the same time, and is not recommended. It is recommended that you get a good quality power supply that is regulated...

BTW, Voltage * Current = Power (Watts) so 5v 1A = 5w power supply

To explain about the battery:
The battery is 1800mAH or 1.8Ah. This means that if you draw a current from it of 1.8Amps it should last for one hour. 

Lack of Reverse polarity protection means that the zaurus does not have protection against the wires in your plug becoming reversed and so the flow of electricity is reversed. This protection can be as simple as a diode but Sharp don't include it because they waste power, take up board room, and are unnecessary in normal usage.
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Hi Omega,

Thanks for your help and explanations, I would be grateful if you can tell me if I can use my old Zaurus's AC charger instead ?

OLD SL-5500 Adapter [Model EA-70]:
100-240 V ~ 50/50 Hz
0.27-0.17A
23-32 VA    13 W
output: 5V==2A

on my broken SL-3000's US adapter it doesn't read VA and/or W values but only reads :
AC 100 V 50/60 Hz 11 VA [I really don't have an idea on what VA means   ]
DC 5.0 V 1.0 A

The difference is 1.0 A => 2.0 A and 23-32VA => 11 VA
Can I use my old charger instead ?

Again much thanks for your help

3

C1000/3x00 Hardware / Info On Sl-c3000 World Voltage Ac Adapter Specs

« on: April 14, 2005, 04:32:52 am »

Hello,

I have recentlly purchased a new SL-3000 and I think this one is great, I had SL-5500 beforehand I think that 640x480 resolution is really worth the price

Unfortunately my wife put the AC Adapter charger directly to 220 Volts but it was not a World Adapter but was for US 110 Volts, so blew off  

I was planning to use my previuous converter [220=>110 Volts] that I used for charging my previous SL-5500 but now the 110 V US Adapter is not working  

I am planning to use an external adapter and searched this forum for the specs. As far as I can see I just need an adapter that has DC 5.0 V and 1.0 A. Unfortunately I could only find an adaptor for 5.0 V but 0.5 A. I am by no means an electronics expert so I don't know whether this one will damage my new SL-3000 or not. Can someone please tell me if it is OK to use 5.0 V / 0.5 A for charging my SL-3000 ?

I had searched these pages/forum on on https://www.oesf.org/index.php?title=C3000_General_Info
I saw that :
  *  Battery & Power
  * 1800 mAH, external charger
  * warning, no reverse polarity protection so be VERY careful if using a non-standard power supply

but on my broken charger charger it reads 1.0 A not 1.8000 mAH so I am a bit confused.

Also the following information written there has left me deeply worried :
warning, no reverse polarity protection so be VERY careful if using a non-standard power supply

As I said, I don't know what is a "reverse polarity protections" and I am further worried for finding a suitable charger that will be ok for my SL-3000

Could someone with electronics background please tell  me exactly which spesi fications are neeed for charging my SL-3000 from 220 Volts ?

- Volts ?
- Ampers ?
- Watts ? [I do not know if watts is relevant here or not]


Or can I use my previous SL-5500's charger for charging my new SL-3000 temporarily for a few times till  I find a new charger according to specs ?

Any directions/help would greatly be appreciated
Thanks in advance  
Irfan