atx smps help

[milan3210]

help i have high output voltage
its showing +5.30vdc instead of +5vdc
+12.30vdc instead of +12vdc
+3.50vdc instead of +3.30vdc

even ps on voltage is +4.90vdc

 

[Harald Kapp]

Methinks you should reduce the output voltage.


No, seriously: What do you expect us to conclude from that tiny bit of non-information you gave us? Show us your circuit, what are the parameters? Where and how can the voltages be controlled? What are your loads?

Maybe if you bother to look up that information you can answer your question yourself.


Harald

 

[Resqueline]

Also; are you sure your instrument shows the correct values?

 

[(*steve*)]

The voltages may be perfectly within spec too.

 

[Rleo6965]

Are you using Digital Multitester?
I think this atx power supply was for your PC and your reading those dc voltage on Bios Voltage Monitor. Those were not accurate reading..

 

[OLIVE2222]

Hi milan3210,

The voltages outputs must be within +/- 5% tolerances see, page10:
http://formfactors.org/developer\specs\ATX12V_1_3dg.pdf
However it' s will depend on the measurement (load) conditions and indeed you need a calibrated instrument. The displayed values seems OK to me.

Olivier

 

[milan3210]

smps output

hey olive
this is milan
i m happy to get ur reply on my problem
i found the problem.its the toroidal inductor which makes output voltage high

i changed it and i get perfect voltage