How much volts from USB?

[Stankia]

Hey guys, I recently found a unused USB cable in my closet, cut one end off , attached the two wires to my M401 atomiser and the other end to my PCs USB. And wow the vapor production and throat hit is amazing! I was wondering how many volts does a USB port produce? Since my atty is rated at 3.2V I think and it's still holding up. Thanks.

 

[Digs]

5v i think

 

[jasezero]

USB ports are all rated at 5v. The difference will now be in the mAh you are getting. Typically USB is rated at 500mAh +/- 50. If you have a wall adapter, you can get more amps.

 

[the86d]

500ma will not charge my phone.

All USB ports on ANY computer I have plugged into have charged it, so I am assuming that 500ma is the old standard. I am thinking that it is 1A.

(I really have no background in electronics, just computer hardware that functions. Assuming I am not soldering Caps, and that is about it.)

 

[jasezero]

500ma will not charge my phone.

All USB ports on ANY computer I have plugged into have charged it, so I am assuming that 500ma is the old standard. I am thinking that it is 1A.

(I really have no background in electronics, just computer hardware that functions. Assuming I am not soldering Caps, and that is about it.)

Newer computers will provide more power than 500mA...but not all...you have to check the spec on what your computer provides...

Also, that power is shared between other USB ports...so you could be getting the full power, or not...really depends.

Best bet anyways is to get a AC to USB wall adapter that does 1A or higher. Or the enercell with variable voltage, usb adapter, and provides a full 2A.

 

[woodman]

I dont trust my PT safety device so I just took an old computer PS and and old usb port from old...whatever to make a usb power source. Good use of old junk! and very easy.

 

[mendnwngs]

500ma will not charge my phone.

All USB ports on ANY computer I have plugged into have charged it, so I am assuming that 500ma is the old standard. I am thinking that it is 1A.

(I really have no background in electronics, just computer hardware that functions. Assuming I am not soldering Caps, and that is about it.)

'lsusb -v |grep MaxPower' or similar under root will give you an overview of the max amps the ports can output, as reported by the hardware.



-Jason

 

[5cardstud]

This site will tell you every thing about power of usb 1 and usb 2: USB As A Power Source

 

[bassnut]

Careful.
I've heard that using direct-line PTs can fry your PC. The inline batteries are there for a reason.

 

[Switched]

Careful.
I've heard that using direct-line PTs can fry your PC. The inline batteries are there for a reason.

Bull cookies. It will fry your port not your PC. PCB on your PT should protect your USB port. If you are concerned at all, by a wall adapter or a powered by the wall USB hub.

 

[bassnut]

Bull cookies. It will fry your port not your PC. PCB on your PT should protect your USB port. If you are concerned at all, by a wall adapter or a powered by the wall USB hub.

Whatever....
Be concerned! It needed mentioning.

 

[48lowes]

Voltage is kinda a relative thing. With and atty, without and atty, new computer, old computer, USB hub, regulators, resistors, dioeds....................
Whoaaaaaaaaa
I've found a 120volt to USB works great. It doesn't fry attys, doesn't scorch liquid, and has enough punch to make it worthwhile. I haven't tried the 12volt (for the vehicle) to USB yet as Madvapes was out at the time. Last I checked Madvapes had them in stock. Get the ones rated 2amp and your problems are over. If you want to delve further into the voltage thing then knock yourself out, but in the meanwhile you have a reliable source with your adapters.
Welcome to MadVapes LLC
and since the car adapters were outta stock and I liked this one.
usbfever.com - Accessories for USB Gadgets, PC, iPhone / iPod, PDA / Phone Accessories, Charger, Bike / Car Mounts

I was wondering how many volts does a USB port produce? Since my atty is rated at 3.2V I think and it's still holding up. Thanks.

 

[Carlosg]

im charged mine in my pc takes like 30 mins, wall takes like 20, but in my AT&T uverse box it takes like 5 minutes =O

 

[Scubabatdan]

500ma will not charge my phone.

All USB ports on ANY computer I have plugged into have charged it, so I am assuming that 500ma is the old standard. I am thinking that it is 1A.

(I really have no background in electronics, just computer hardware that functions. Assuming I am not soldering Caps, and that is about it.)

Newer computers will provide more power than 500mA...but not all...you have to check the spec on what your computer provides...

Also, that power is shared between other USB ports...so you could be getting the full power, or not...really depends.

Best bet anyways is to get a AC to USB wall adapter that does 1A or higher. Or the enercell with variable voltage, usb adapter, and provides a full 2A.

Hi,
jasezero;1292047 is mostly corect. USB 2.0 works on 100ma units, the low power USB will only allow 1 unit, the highpower bus will only allow 5 units or 500ma, this is on ALL computers with USB 2.0.
USB 3.0 is suppose to be 150ma per unit at a max of 6 units on the high power bus equalling 900ma. So unless you have USB 3.0 you are limited to a max of 500ma @ no more than 5.25vdc.

Hope this helps.
Dan