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Round-pin power cords for older equipment using PH-163 connector

Filed under: parts,power — 2006-03-15 by Richard L. Hess — Last Edit 2007-10-21 by

The round-pin power cords used on older Hewlett-Packard and Dolby equipment  uses a connector called the PH-163.  

The round-pin power cords using the PH-163 connector come in two versions. The difference between the two versions is that the hot and neutral are reversed. The ground is always in the same centre position. (more…)


Powering Wall-Warts

Filed under: power — 2006-03-08 by Richard L. Hess — Last Edit 2006-03-10 by

The regulatory climate and economics will support a wide variety of “wall-wart” power supplies for the foreseeable future. These are, at best, a headache to deal with. Some of the ways I’ve dealt with them are: (more…)



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