[sdiy] VReg as op amp bias source

[Ullrich Peter]

Hi!

Using a VREG is OK when working with one supply voltage that never changes.

If you want to use your circuit with different power supplies or batteries a virtual 
Ground/rail splitter circuit - like those from Texas Instruments - are a universal solution. 
I really can recommend these circuits. They work from 4 to 40V:

http://focus.ti.com/docs/prod/folders/print/tle2426.html

Ciao
Peter

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