[ARC5] Power Supply Filter Question

[KG4KGL]

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> On Dec 20, 2013, at 21:04, "Robert  Eleazer" <releazer at earthlink.net> wrote:
> 
> Back when I first started learning about boatanchors I read the usual ARRL material that described the classic way to build a power supply: a capacitor, an choke inductor, and a capacitor.  I soon found out how rare and expensive the required inductors were.  

Why are choke inductors rare and expensive? Hammond and edcor are just two makers of plentiful and affordable chokes. 

Robert
KG4KGL