Homebrew PCBs

"What's the inductor L1 for? -ST"

As it turns out, absolutely nothing in a linear power supply.  I must have
looked at a schematic that had components from both a linear and SMPS power
supply design.

I like this explanation of linear versus SMPS power supplies; very clear for
newbs like me:
http://www.answers.com/topic/switched-mode-power-supply

Robert
:)





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