stanard atx dc-dc conversion

**dogz** · 10-06-2005, 12:09 PM

i have a couple of old atx psus here and was wondering if these can be converted to dc-dc for carputer, im not too worried about them cutting out while cranking, basically i just want it to take the 14 ish volts from the battery and use it to run the pc

any suggestions

thanks
ps. i read presslabs post and i dont need it to go down to 7.5v

**dogz** · 10-07-2005, 04:43 PM

basically i want someone to tell me what parts to remove so i can feed it from the battery

**DarquePervert** · 10-07-2005, 05:43 PM

It's not that simple.

**Enforcer** · 10-07-2005, 05:49 PM

Yeah, if only the transformer dropped the 240AC down to 12VAC and then had a bridge rectifier on it to get 12VDC and -12VDC.

**dug1967** · 10-07-2005, 06:02 PM

It's very easy, you just remove the large yellow thing with 12pF on it, turn it around, re-solder to the board... then the tricky part... you have to purchase a "Pico-Nano-Electro disapater" in the range of 12.32 to 18.61 Ohms and this has to be jumped in between pins 13 and 36 of the IC marked C4426-P2, and it must be the IC on the left, not the one on the right.... just below the blue round thing approx. 0.345" in diameter, not the one below the blue round thing approx. 0.385" in diameter....

I have done it many times, just be slow and you will be set.....

If you have any problems let me know I can send some pictures

**dogz** · 10-08-2005, 10:09 AM

a what "Pico-Nano-Electro disapater"

**numbers** · 10-08-2005, 01:06 PM

omg omg pix plz!!!!

**cell21633** · 10-08-2005, 01:21 PM

all in good fun

**djXternal** · 10-08-2005, 02:22 PM

no but is this sort of thing really possible, with keeping the power output of the atx psu the same? because my system requires a minimum of 300W so I have a 350W atx psu, but it would be nice to get rid of that inverter