Eric Lemmon wrote:
> Or, how about putting old linear technology behind us, and embracing the
> LM2576T-ADJ switching buck regulator?  You can buy this puppy ready-made for
> about $14:
> <http://tinyurl.com/yhma5h5>
> 
> Just change the 8200 ohm resistor to fix the output voltage.  The
> LM2576T-ADJ is rated at 3 amperes.
> 
> 73, Eric Lemmon WB6FLY
> 
>  

I would be cautious about using a switching regulator without also 
providing proper EMI/RFI suppression. Without it you may cause _lots_ of 
grief for your site neighbors.

The switching solution is much more efficient, but at a higher 
complexity / construction cost to do correctly and quietly.

Ed Yoho
W6YJ

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