On 2/26/2013 20:13, Rick Bates wrote:
It isn't.
One needs a 3 amp 18vac AC wall wart, diodes, a few caps an LT1803
adjustable regulator and a few resistors.
The use of an AC wall wart eliminates any switching supply concerns.
73 de Brian/K3KO
It shouldn't be difficult to build a small, linear, regulated supply for an amp
or so with parts from the local supply house. Packaging it is the greater
challenge.
Rick wa6nhc
Tiny iPhone 5 keypad, typos are inevitable
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