Power supply only producing 11 volts

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Sep 23, 2012

• #21

The ATX supplies aren't isolated, are they?

 

A

Ausant

New Member

• Sep 23, 2012

• #22

Sorry what do you mean by supplies?

 

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Sep 23, 2012

• #23

Shorthand for "Power supplies"

 

A

Ausant

New Member

• Sep 23, 2012

• #24

Ok, I tried both 5v and 12v together and no action. I tried putting the load in different combinations and still not enough. Might have to give up on this little project, I would not be able to identify the right resisters to modify them.

Thank you for your help! Much appreciated!

 

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Sep 23, 2012

• #25

+5 and +12 together is/was a bad move. I somewhat suspect that something may be wrong with the power supply. DC voltages, which you don't have might help. You know of the minimum load concept and the sense lead concept and I hope the way to turn on the power supply.
You do have that jumper in place, right? Pin 8 (PWR good) to Ground 7 or any ground pin.

 

Last edited: Sep 23, 2012

A

Ausant

New Member

• Sep 23, 2012

• #26

I do not have Pin 7 to Pin 8 Connected. I do have power on (16) to a ground wire.

 

blueroomelectronics

Well-Known Member

• Sep 23, 2012

• #27

electronicsbasecom said:

View attachment 67438 Just connect grounds as it shown on picture and you have 17V to charge what you want. Of course you must use a proper resistor for current limit.

Click to expand...

Not 17 but 7V. The GNDs are all connected. It's an old trick to get 12V PC fans running slower.

 

Last edited: Sep 23, 2012