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.
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?