i think you need some load to make it regulate properly

"Sam Goldwasser" wrote in message
...
"crazy frog" writes:

thats what i read from silicon chip and have
done so and it works fine.
im useing a 200w one to power a 16/ch mixer
i have built in the last 2 years.
im useing a nother one power my modem
and network hub and some fans.


http://www.formfactors.org/developer..._public_br2.pd
f

This appears to be Intel's ATX specifications. It is not clear what
minimum load is required for proper regulation. Under "DC Voltage
Regulation", it says:

"The DC output voltages shall remain within the regulation ranges shown
in Table 2 when measured at the load end of the output connectors under
all line, load, and environmental conditions."

Later on in: "No Load Operation", it says:

"No damage or hazardous condition should occur with all the DC output
connectors disconnected from the load. The power supply may latch into
the shutdown state."

Loading examples never go below 1 A on +12, 0.3 A on +5, 0.5 A on +3.3.

So, it shouldn't blow up under very light or no load conditions, but the
exact values needed for proper operation may not be obvious.

And, the existence of this specification document doesn't necessarily
imply that all Far East ATX power supplies are fully compliant.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above
is
ignored unless my full name AND either lasers or electronics is included
in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.