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How Can I Get 7.5V From a PSU? - Page 2

post #11 of 15
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Quote:
Originally Posted by DuckieHo View Post
http://www.powerstream.com/dc6.htm

It takes 6-30V DC and changes it to 1.5/3/4.5/5/6/7.5/9/12v DC. It can handle up to 2-3A or 25w. Most portable LCD use less than 10w.

Get a simplier and cheaper model.
\\/ You mean the thing I linked in post number 3? \\/

Quote:
Originally Posted by mrtn400 View Post
There's no 7.5v on a molex. And last time I checked, using the 12v+5v lines together on most things other than fans will kill your 5v rail.

Would buying this and splicing it into a molex connector work?
Quote:
Originally Posted by h33b View Post
your psu provides AC power doesn't it? You'll need some kind of convertor to go from AC to DC before you start trying to give that thing power.
I'm talking about my sig rig's computer PSU, not an AC brick.
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post #12 of 15
Quote:
Originally Posted by h33b View Post
your psu provides AC power doesn't it? You'll need some kind of convertor to go from AC to DC before you start trying to give that thing power.
Power supply provides DC, it converts 120AC to 12v, 5v, and 3.3V DC. Motherboard further converts it down to (more stable) voltages usable by certain sensitive components such as CPU and RAM.
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post #13 of 15
IF the current is that low, you should be able to use a resistor in series with you LCD to get 7.5 volts, i cant remember the math behind it, but in a test, with 400ma i got 17ohms to get 7.5 volts.
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post #14 of 15
Just get a simple potentiometer or small trimpot and set the voltage using a multimeter. Shouldn't cost more than $2.
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post #15 of 15
Quote:
Originally Posted by h33b View Post
your psu provides AC power doesn't it? You'll need some kind of convertor to go from AC to DC before you start trying to give that thing power.
if it provided AC then people with AC water pump would not have to mod there pumps to the psu
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