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BrianG · 02.05.2011, 09:13 PM

Another little update for this little PS unit.

I got another one of these and was doing my voltage boost mod when I accidentally discovered the ground connection for the sense/feedback circuit is not even needed. After doing some more playing around, a 1.5k ohm resistor between the main 12v terminal and pin 5 is all that is needed to boost the output to 13.2v.

BTW, the max voltage you can get out of this is around 13.5v. At 13.6v, the PS shuts down.

Also, for those that think the fan is a bit loud on 12v: If you run this PS at 25A or more for extended periods (>1/2 hour), the air coming out the back is pretty toasty. I figure even if this unit is 90% efficient, 35A @ 13.2v is 528w which will produce 53w of heat. That's quite a bit, so if you do turn down the fan, I wouldn't go too far.

	(#8)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	02.05.2011, 09:13 PM Another little update for this little PS unit. I got another one of these and was doing my voltage boost mod when I accidentally discovered the ground connection for the sense/feedback circuit is not even needed. After doing some more playing around, a 1.5k ohm resistor between the main 12v terminal and pin 5 is all that is needed to boost the output to 13.2v. BTW, the max voltage you can get out of this is around 13.5v. At 13.6v, the PS shuts down. Also, for those that think the fan is a bit loud on 12v: If you run this PS at 25A or more for extended periods (>1/2 hour), the air coming out the back is pretty toasty. I figure even if this unit is 90% efficient, 35A @ 13.2v is 528w which will produce 53w of heat. That's quite a bit, so if you do turn down the fan, I wouldn't go too far.