Homebrew PCBs

I'm thinking that an el-cheapo ps to use to
electroplate the copper out of the ferric chloride
would be the world famous (Much overused...), out of
date adjustable voltage power supply that can be built
using an LM317. The upside is the schematic is on the
back of the packaging if you purchase it at Radio
shack (And the Radio shack schematic it matches the
schematic in the app note...). Further, you can 1.5
amps out of the LM317 (If you put a big piece of
aluminum as a heat sink).

Now, I know that there are more modern adjustable
voltage regulators that have more desirable
characteristics. Some of the products made by Maxim
(Among others...) come to mind. But, my reasoning
behind this is the LM317 is probably the most widely
available voltage regulator on earth (That's
adjustable using inexpensive discretes...) which would
make fecl regeneration within the reach of anyone (Who
has purchased fecl).


Best regards


Marvin Dickens

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