Small Regulator board layout -Anyone have one?

[boogietube]

I want to add some regulation and power supply filtering to my future diy effects. Polarity protection would be nice too.  Does anyone have a decent layout? I really don't know how to accomplish this. I'm assuming that it's probably a 78L09, a 220uf cap and a zener diode, in some sort of configuration. This is from some of the things I have read here. Please help.
Thanks

[Seljer]

something like this http://aronnelson.com/gallery/Layouts/9V_filter ?

I don't think that 78L09 would work, as those need a 1 or 2V headroom the regulate properely

[Xavier]

Yes that's my small layout. Simply ask for a 9,1V Zener. Mine just happened to have that name, but I guess there must be hundreds of them.

To me this is a small add on circuit that works like a charm. It effectively cuts hum and gives 9,1 V no matter what crappy wallwart you use at the input (my "9V DC adapter" measures 11,45V really.....)

[Paul Perry (Frostwave)]

Before anyone says "but there is no resistor running to that zener!", there is.... but it's the resistance of the output winding of the plugpack... which I can't say is good practice...

[boogietube]

I was looking for a circuit with a 78L09 or similar , with filtering and polarity protection.