Low -12V

[paulktreg]

Dodgy sensors or looking at the wrong sensors? Got mixed results over the years with voltage sensors and readings and I'm convinced there isn't a particular standard for them and motherboard manufacturers lay thing out slightly different? I remember a DFI board I once had that gave some very strange readings through some program or other in Windows. You can only be certain when you actually measure the voltages.

[wevsspot]

When testing power supplies it's very rare for the -12V rail to actually read -12V, it's more often than not hovering around -11.5V at low loads and approaches -12V as the load increases.

Paul, for my own education..........

Is the -12v supposed to stay within the same ATX specification as the +12v (i.e. +/- 5%)?

[paulktreg]

Paul, for my own education..........

Is the -12v supposed to stay within the same ATX specification as the +12v (i.e. +/- 5%)?

 

It's +/-10% on the -12V rail.

[wevsspot]

Thank you sir

[mattyamdfanboi]

mine does the same but goes to -12.3 when its put under load.. otherwise it idles low...