Charge over USB

[Guest Nik Louch]

I'm going on a trip soon, and the airline advertises "USB charging ports" (for chargin iPods, etc).

Is there any way to charge a Vega over USB?

[Guest TylerDurdenK]

What is the output of the Vega charging pack? - 12v 1A and I believe the adapter is a 4mm Outer and 1.7mm Inner.

What is the power output of USB?

Is there a lead you can buy with USB one end and the correct adapter for the Vega charging input in the other?

Edited February 8, 2011 by TylerDurdenK

[Guest TylerDurdenK]

I found this info which may help.

USB provides 5 +/- 0.25 volts to power an otherwise unpowered device or charge a battery in a self powered device. A USB controller or hub is required to power one unit load (100 mA, a low power load). It can optionally power up to 5 unit loads (500 mA, a high power load).

This is the source http://www.girr.org/mac_stuff/usb_stuff.html

[Guest TylerDurdenK]

I winder if something as simple as this will work?

http://cgi.ebay.ie/USB-Male-DC-Power-Cable...#ht_3272wt_1205

[Guest Lennyuk]

I winder if something as simple as this will work?

http://cgi.ebay.ie/USB-Male-DC-Power-Cable...#ht_3272wt_1205

then you can turn it to host mode and make the vega charge itself to have never ending power...... bwahahahaah (this is of course a joke...)

[Guest dannight]

then you can turn it to host mode and make the vega charge itself to have never ending power...... bwahahahaah (this is of course a joke...)

Damned it I thought you had discovered a perpetual energy source! Shame!

[Guest pdej]

I winder if something as simple as this will work?

http://cgi.ebay.ie/USB-Male-DC-Power-Cable...#ht_3272wt_1205

Am I right in thinking this would charge, but just more slowly?

[Guest TylerDurdenK]

Found this monster on Ebay.

http://cgi.ebay.co.uk/Multi-10-1-USB-Charg...1#ht_1947wt_905

It does have a 4.0mm plug on it, so could work!

[Guest TylerDurdenK]

I have also discovered that the Sony PSP has the same tip dimensions as the Vega (4mm outer and 1.7mm Inner) so charging cables for that may also work.

Such as this one for £1.41 delivered.

http://cgi.ebay.co.uk/NEW-RETRACTABLE-USB-...b#ht_1386wt_905

Edited February 8, 2011 by TylerDurdenK

[Guest thedicemaster]

doubt it would work, especially considering the vega takes a much higher voltage than usb supplies.

but it can run for quite some time on just batteries.

[Guest Uzi74]

It won't work: 5,5V vs 12V

[Guest gingercat]

There's no way you can convert USB power which is limited to 5V 500mA to 12V 1A

5V*0.5A = 2.5W

12V*1A = 12W

That's expecting the USB port to magically multiply the juice it can supply by nearly 5! It's a shame we can't trickle charge somehow at USB supply levels.

p.s. A simple circuit for converting voltage (but not with enough juice!) can be found here

Edited February 8, 2011 by gingercat