Re: [Openeeg-list] Power Supplies

[Joerg H. <jo...@sd...>]

Hi,

Matthew Thomas wrote:
> Hi folks,
> Apologies for encroaching on your list with a problem that I'm sure you have
> solved and discussed numerous times over!  I have an IEC601 medical single
> rail power supply (13V) of the desk top variety as found in RS.  I'm looking
> to derive a dual power supply (+-5V) from this single rail.  I'm
> particularly concerned about the fact this supply is switch mode and any
> single to dual converter is likely to be switched which may introduce
> substantial noise to my low-noise patient connected circuit!  Does anyone
> have any suggestions for how I can achieve this?  My front end power
> consumption is about 500mW.
> 
> Any advice would be greatly appreciated!

What about an analog regulator 13V->10V and then a rail-splitter / virtual GND 
circuit?

Regards

	Joerg