On Sun, 03 Mar 2013 23:13:17 -0800, Frank wrote:

On Mar 3, 7:39Â*pm, Jim Mueller wrote:
On Sat, 02 Mar 2013 20:00:49 -0800, Frank wrote:
Clamshell-looking enclosure on small AC power transformers. Â*Magnetic
shielding to prevent interference with nearby wires?

Magnetic fields are hard to shield. Â*In a power transformer, it would
be more effective to use more iron in the core and more turns in the
windings to reduce the flux density. Â*While a steel shell probably
provides a limited amount of shielding, it's more likely there to
provide mechanical protection. Â*At the same time, it gives a better
appearance.

Surprised no one's made them gold plated.

I have seen chrome in imported equipment where everything is chrome
plated. I've also seen some with a finish that looks sort of gold
colored. Perhaps it is some kind of zinc chromate coating.

--
Jim Mueller

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