• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Required datasheet of DR-C2002 ATX Power Supply I.C.

Not open for further replies.


Well-Known Member
Most Helpful Member
I do not have enough information to say. This is just a guess.
It looks like a error amplifier at pins 43/44.
The supply is looking at 12V and 5V for DC and also looking at 3.3V for ripple.
These supplies were never designed to run with 5V unloaded!
There is a voltage divider: R60 & R62 pulls up. R40 & R39 pulls down.
If you want to increase the output voltage by 10% try decreasing R40 by 10%. (put a 730k across R40)
The idea is to pull down on pin 44 a very small amount more so the supply will increase the output voltages slightly.
You probability can not get more than 15% more voltage before you hit a limit.
Good Luck



New Member
Thx alot.
But the problems had been solved.
I removed R34 and R35, and change its with VR 10K Ohm.
Finally I got 13,5Volt DC output.
Not open for further replies.

Latest threads

EE World Online Articles