technical help needed: usb y cables

[Psykopathik]

5v+5v in parallel is not = to 10v

5v+5V in SERIES = 10V, however you'll probably burn your mobo

[underscore]

How portable does it need to be? If it's just for your desk, get a 12VDC wall adapter and use a variable resistor to vary the speed. Or get an adjustable wall adapter and just use the voltage selector on there to change the speed.

Originally Posted by ecsw

why does ppl here always want to pick on me?

I created posts in other forums to help other ppl with many DIY projects. Some electronical and some mechanical, but mostly got respected. the only place I never get a "thank you" and have people doubted what I say is in here.

Cause what you're saying will fry his USB ports...

[homey_v]

let see the thing was i thought of plugging it to the wall and ive got 12v wall adaptor already, but i wanna just plug it into my laptop and call it a day.

im reading about the firewire.

[johny]

Originally Posted by ecsw

it's possible. but I made a mistake on the amp.

you will lose the amp by 1/2. Therefore, 2 x 5v 500ma can make 1 x 10v dc with 250ma.

no you woudln't... it would be 10v 500ma if it worked.

[ecsw]

Originally Posted by underscore

Cause what you're saying will fry his USB ports...

No it won't.

I took one of my board and made serial 2 usb like I mentioned, it simply stopped supplying power. I restarted the computer and usb works again with 5V output.

but whatever.. Don't listen to me which no body does anyway.