On 22/02/2020 02:12, Commander Kinsey wrote:
On Fri, 21 Feb 2020 09:49:02 -0000, Andy Bennet wrote:

On 20/02/2020 22:16, Commander Kinsey wrote:
On Thu, 20 Feb 2020 08:41:51 -0000, Andy Bennet wrote:

On 20/02/2020 03:53, Dean Hoffman wrote:
On 2/19/20 10:46 AM, Commander Kinsey wrote:
Why do (cheap? expensive ones may be better) PC ATX power supplies
need current drawn from the 5V line to make the 12V line work
correctly?

I have a PC with 3 graphics cards running scientific applications.* I
acquired three old graphics cards that take about 300W each, and have
loads of cheap (CIT) PSUs that are rated at 650W on the 12V line,
which is what those cards use.* So I run each card off its own
supply.* But the 12V line at no load, or even at 300W, is only giving
out 10 to 10.5V.* If I attach a small dummy load of an amp or so to
the 5V line, the 12V line suddenly becomes 12V.

Why are the two lines related in any way?

Sorry for the crosspost, I'm not sure which of these groups are
active.

**** There's a group** sci.electronics.design** that still has life.
They might like the diversion from arguing the merits of the electoral
college.

The scottish ****** loaded the same question to all the electronic
groups at the same time. Playing off one set of groups against the
other.

Playing off?* WTF are you talking about?* Since I don't inhabit those
groups, I don't know which have any traffic or anyone who can answer,
hence I asked in all the relevant ones.

You are asking all the same ****ing questions as you have done here -
and amazingly getting all the same answers. But still you persist.

Of course I'm asking the same questions in different groups, to perhaps
find someone who has the intelligence to answer them.

Did you get your "Does a parrot's foot conduct electricity?" post
answered on the s.e.design group?