Hello forum, i was wandering, since most of the PC PSU's are switching, and since they all use a Rectifier, to convert the AC to some kind of DC,
is there a way, change some of the PSU components, to make it run from an unregulated DC source?? (a car battery maybe?)
Hello forum, i was wandering, since most of the PC PSU's are switching, and since they all use a Rectifier, to convert the AC to some kind of DC,
is there a way, change some of the PSU components, to make it run from an unregulated DC source?? (a car battery maybe?)
Maybe I don't understand your reasoning here. Why not just use a car battery and voltage dividers to achieve the desired DC voltages? A switching PSU is going to have some efficiency loss added to the end result, so why bother?
1) it is more like a "can it be done" thing, and not a neccecity
2)if i do it, i would do it, to power Car pc , so, i cant use voltage dividers (which anyway have smaller efficiency?? )
1) it is more like a "can it be done" thing, and not a neccecity
2)if i do it, i would do it, to power Car pc , so, i cant use voltage dividers (which anyway have smaller efficiency?? )
For PC you need good 12V and 5V power, negative too. Car battery is unregulated. It may go from as low as 9V when cranking to as high as 15V when charging. Standard PC PSU starts from rectified mains, which is 150 to 350V, depending on the country. I wouldn't expect much of it to be reusable, better build/buy a new one.
but, if you take the PSU's circuit, after the RECtifier, it's only DC. so, if you remove the rectifier, and just supply DC to its outpout, isint this supposed to work??? i suppose you have to add the exact voltage as was the rectifiers outpout?? (which i have no idea how much is?? )
but, if you take the PSU's circuit, after the RECtifier, it's only DC. so, if you remove the rectifier, and just supply DC to its outpout, isint this supposed to work??? i suppose you have to add the exact voltage as was the rectifiers outpout?? (which i have no idea how much is?? )
but, if you take the PSU's circuit, after the RECtifier, it's only DC. so, if you remove the rectifier, and just supply DC to its outpout, isint this supposed to work??? i suppose you have to add the exact voltage as was the rectifiers outpout?? (which i have no idea how much is?? )
ooo. i though nigel on post #2 was trolling
for some reason, i though that rectifiers outpouted only like, 2-3 volts... but if i need way more than 12 volt, then i would need an extra dc-dc converter.... (so why not just use a dc-ac one).
how much volt approximately??
but, if you take the PSU's circuit, after the RECtifier, it's only DC. so, if you remove the rectifier, and just supply DC to its outpout, isint this supposed to work?
It won't work because of the current needed. Suppose your PSU draws 4A at 120V input. To get the same power from a 12V battery you'd have to draw 40A. The wiring and components inside the PSU aren't designed to handle that.
ooo. i though nigel on post #2 was trolling
for some reason, i though that rectifiers outpouted only like, 2-3 volts... but if i need way more than 12 volt, then i would need an extra dc-dc converter.... (so why not just use a dc-ac one).
how much volt approximately??