Re: [sdiy] +-12V supply

[Roman]

Why? Because 1mV is a nice number. It's 100s times better than needed for my modular, but it's not a reason for not doing PS the right way for a change. It's still a circuit, and it deserves to be made good, maybe just once. It was the first decent PS project I ever acomplished. That was also the reason for doing it.

Good I haven't told you before, that later I redesigned the PCB layout to improve load regulation by few mV.
Then you would call me crazy insane maniac, not just a crazy one.
:)

I know it won't be 1mV accuracy at the load, but who cares. Even at the screw terminal itself there can be hundreds of microvolts drop. The only way of doing it is 4-wire drive/sense approach, but that leads to 1PS per module which is something I'm not ready yet ;)

Roman


> > I wanted PS with 1mV accuracy.
> 
> Why?  And at what point?  If you're accurate to that degree at the output of 
> the power supply it's not going to be at the same point at the load,  
> necessarily,  unless you spend an inordinate amount of effort on the 
> distribution system as well.
> 
> 
>