It's great that some chicks just love to play with technology. However, the "two billion watts" statement is *very* incorrect. Every chick who has even a little knowledge of electronics will know that (for DC circuits anyways) W=V*A. It will be 10w.
My design is 90% complete, and I just need to stress test it with a large load. I'm thinking of a 2.5A load (for the Axim, worst case is 2.41A).
I'll probably use some of those large resistors left over from an old project.
So far, the only changes from the reference design are:
1. Change the input and output capacitors to 1000uF.
2. Add a diode in series with the input.
3. Use a 1k resistor for the lower resistor of the voltage divider and 2.2k in parallel with 4.7k for the upper resistor.
You shouldn't have to stress it much above 1.5 amps. The dell brick is capable of 2.4 but it shouldn't ever have to go there. designers usually have about double of the needed current as overhead due to inneficiancies of componants.
I have an iGO adapter with a 6V plug that I just plug into the charger adapter that came with my X50v. It works great. Charges my Axim while using Navigation software.
Kozak, it's not putting out a full 6v. At 6v the protection circuits on the Axim cut in and block it from the electronics. It's good it works for you, but others may find that 6v units that really do provide 6v don't work, so this post is for them. I have one of those.
Gigi, the mystery is easily solved... upon inspection of the "ebay" power converter, it says "12V 400mA".... using unknown's model AC08 transformer (but Google came up empty on any datasheets for exact specs)... anyway, even if they did a 100% efficient power conversion, this wall transformer should max out under 1A of current, and as demonstrated in the other threads, the Axim can demand much more (the Dell brick provides 2.41A).
If I could find their spec sheet, it might be easy to find a way to upgrade the device, but prob not someone most people want to do (I find the form factor appealing, so I'd prob do this one day).
LOL, I wonder how bad the car adaptor is (will investigate later).
I guess I'd say you might have a "charger", but not a "during use" charger, at best (same for me).
Mike
Thanks Mike, for checking this out for the rest of us. I do not fully understand the technical aspects of what you have described, but your conclusion makes a lot of sense and confirms what I have observed myself. A further question, though: when you talk about upgrading the device, do you mean replacing the transformer?
Thanks Mike, for checking this out for the rest of us. I do not fully understand the technical aspects of what you have described, but your conclusion makes a lot of sense and confirms what I have observed myself. A further question, though: when you talk about upgrading the device, do you mean replacing the transformer?
Yes.. in theory one could find a better AC -> 12VDC transformer that would supply more current... of course this then assumes their 12V -> 5V conversion would be capable of handling the current (unconfirmed)
All in all I think this is the most disappointing piece in the kit.
FWIW, I sorted thru my collection of misc AC/DC bricks (from dead gadgets of yesteryear).. none of them put out > 500 mA. We have a collection at work that I will check tomorrow.
Untested hypothesis.... pure speculation on my part.... if one were to open the USB/sync cable and disconnect the jumpers to the AC power pins, leaving only the USB-power pins, then I think this charger would be equivalent to USB charging (ie. it can supply in the realm of 500mA I think)... which I believe USB charging is always possible????? just not neccesarily fast. (ie. does Dell state anywhere that USB charging is always capable of doing the job?)
All in all I think this is the most disappointing piece in the kit.
That's very disappointing to hear because I bought this kit specifically for the wall charger component!!! I guess I should have just bought a regular one.
Ahh... and why it can not sync and charge while on, instead of only charging while off, correct?
That makes sense... I think it was designed that way purposely. As you can see, it's not impossible.
Originally, yes. However, the thread turned into a discussion about the limitations of the USB wall charger despite that fact that it does not draw power from a USB port.
You shouldn't have to stress it much above 1.5 amps. The dell brick is capable of 2.4 but it shouldn't ever have to go there. designers usually have about double of the needed current as overhead due to inneficiancies of componants.
Dell designed the power supply to be able to supply 2.41A for a reason. Do realize that it's a digital power supply that can supply a lot of power.
Quote:
FWIW, I sorted thru my collection of misc AC/DC bricks (from dead gadgets of yesteryear).. none of them put out > 500 mA. We have a collection at work that I will check tomorrow.
Many of the high current power supplies are digital. You probably have a collection of analog power supplies.
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Originally Posted by A friend of mine who has a Linux kernel named after his girlfriend.
If I was VirtualBox, I could load my virtualization module into Hannah and boot up another kernel in the same address space.
Ok, so can someone tell me if there are any sync cable that I can use that are safe. Mostly I just need something that I can plug into my X50v while it's in the belkin executive case because I can't use it with the cradle and the wifi syncing won't work for some reason. Thanks, AximLegionnaire
Ok, so can someone tell me if there are any sync cable that I can use that are safe. Mostly I just need something that I can plug into my X50v while it's in the belkin executive case because I can't use it with the cradle and the wifi syncing won't work for some reason. Thanks, AximLegionnaire
my wallpaper on my pc is the same picture as your avatar. that's a nice car.
I have an iGO adapter with a 6V plug that I just plug into the charger adapter that came with my X50v. It works great. Charges my Axim while using Navigation software.
Can you tell me wihch IGO adapter you plug into the Charger adapter that came with the X50v. Like - what is the number? I want to give it a shot. I carry the IGO now for my IBM laptop and my V710. I would be great to simply carry one more plug. The B07 that they used to advertize does not work. It sounds like I need to plug in one of the other ones originally meant for a laptop or something.
Thanks!
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I guess I should have just bought a regular one. 
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