[Shop-talk] DC power supplay for home plating
Don55CM at aol.com
Don55CM at aol.com
Fri May 23 07:56:59 MDT 2008
In a message dated 5/19/2008 9:03:02 A.M. Eastern Daylight Time,
kvacek at ameritech.net writes:
With all the talk about power supplies for plating, would someone please
give us non-electronic types some succinct guidance on what's required for a
plating power supply ?
What I mean is the general current and voltage requirements, which parameter
is most important to control, etc. How do we figure out how large a tank a
particular power supply can handle ?
The directions for you kit should tell you how much current is required per
surface area of part being plated. Most important is the current. The
resistance of the tank will be very low (fraction of an ohm). Cheap way is to get
a voltage only regulated power supply, and put a high current 1 ohm resistor
in series with the tank. Best way is to get a current controlled power
supply, turn the voltage limit up and use the current control. Too much current
will make the plating rough, dull and porous. If you use an unregulated
supply (battery or charger), you need to vary the control resistance based on the
size of the part being plated. That's a real pain.
Don
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