Hi i am looking at putting a sx260 in my car and have been reading up on a variety of ways to power it. Some use a requlator and some use a PSU can some one tell me the difference between these and when would you use one over the other.
I do not know what an sx260 is but generally speaking a regulator regulates a higher voltage to a stable output. Example 15v to 12v.
A psu ( I think you mean a DC-DC ) can deliver a stable output over a range of voltages. Example 9-15v to 12v. This is important in a car since the battery can run as low as 9 v during starting and the alternator will supply 13-14 volts while driving.
A regulator does just what the name implies: It regulates the 12v power from your car's electrical system (which fluctuates during normal operation).
A PSU is more what you'd use when building a desktop. It's ATX compliant and connects the same way.
Other people may have different definitions, mind you. That's how I view it.
I'm also not sure what an sx260 is. But, there is a wealth of information on this topic both in the forums, and in the mp3car.com wiki.
Probably all the information you'll ever need is right here.
I'm guessing he is referring to a Dell Optiplex Sx260
I believe they use power bricks like laptops.
In that case that link isn't of much use.
He'll need a DC-DC Power Supply which takes 9-18ish volts, and always outputs the voltage required by the laptop, and with enough amperage to keep it going.
I had a laptop I wanted to run in a car that actually required 19v at some ridiculous amperage. Most laptops are 12v or below though, so it should be reasonable to find an appropriate power supply.
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Sorry, yes i meant a Dell sx260, anyway thanks for your input guys, i think i'll go for a psu, probably the DSX12VD, one other question, the psu in question has a motherboard connector as the output (obviously to plug into the motherboard) (molex i think...), however as someone has mentioned, the sx260 has a external power supply and i will need to use the connector end to plug into the pc, can i just cut off the mboard connector and splice it into the psu cable?