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Reply With QuoteHey, good work.
This little unit has been the topic of some rather heated discussion lateley, so I ordered one, and put it through the paces so that everyone could see the results of the testing.
If you just want to cut right down to the point - The entire unit has limiting / shutdown circuit that kicks in at about 15 vdc. If you apply 15vdc you will see 0v across all outputs. The +5v rail does have a regulator, I always received 5.1 +/- .2 v on the 5v rail of the supply. The +12v rail does not have a regulator. It is possible for this unit to supply + or – 3v on the 12v rail (before the limiter kicks in)
Adding a 12v 5 to 10 amp regulator would still make this a pretty good supply for most uses, but if you plan to run the supply with out the ignition going, your batery may drop low enough to cause voltage sags.
I took detailed notes, and screen shots of the test software (DVM interfaced to my pc) and several hi res images of the unit (if anyone wants to look up chip / part numbers)
Everything is posted to http://www.hjnetworks.com/car/pw120
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Hey, good work.
I've just bought one of these off eBay (not arrived yet).
I would like to know what more or less voltage on the 12v line would do to things like the 3.5" Hard Drive motors, would they speed up, slow down or just fail altogether. I know things like 12v case fans what just sping a little faster which is no problem but to kill the hard drive would **** me off.
How easy is it to make a 12v regulator, do they come in a single package or is it a separite circuit. It its a lot a messing around I might as well wait (forever?) for the Opus 90w.
If the Opus 90w PSU's where easier to get hold of I would have bought one of them but they seam like gold dust.
www.gamestone.co.uk
It would depend if the drive has any sort of voltage regulation circuitry. My guess is that most devices would not.
Regulators are prety easy to work with + & - input, and typicaly a + output .
Cant make it, gota buy it
I spoke to the techs, and actually found some good info on the board - http://vincent.ituner.com/power.pdf
Around page 15t or so, they give an example of how to regulate the 12v line, and even the microcode for programing a pic. (Shutdown controler)
adam, read your PMs....
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