Going Someplace Exotic?

World Electric Power Guide: http://www.worldstandards.eu/electricity/plugs-and-sockets/

Electric Current Abroad: http://www.ita.doc.gov/media/Publications/pdf/current2002FINAL.pdf (U.S. Department of Commerce)

Precipitated by a colleague looking for the voltage he can expect in Japan. (The answer: 100/200 VAC Single Phase, 200 VAC Delta)

Did you know that 1/2 of Japan is 50 Hz (East) and 1/2 of Japan is 60 Hz (West)? (There is a dividing line running North-South through Shizuoka on Honshu Island.

Two thoughts: if one is traveling to Shizuoka, be ready for anything. And although this seems totally insane, one can imagine that early Japanese products, designed to work for both 50 and 60 Hz in the days before modular power supplies and universal inputs, would have been a lot more competitive on the world market than products designed initially for either 50 Hz or 60Hz, but not both.

Another good resource for world voltages (if you actually want to pay for a small booklet, which I did many moons ago) is British Standards Institute document TH 20338: World Electricity Supplies – Voltages and frequencies (£65.00) which you can purchase online here.

Autoclicker – A Handy Bit of Code

One of my annoying little work tasks involves scrolling through scores to hundreds of power disturbance graphs with Reliable Power Meter’s PAS software. Since RPM, now a subsidiary of Fluke, seems to excel at quirky ergonomic design, there is no way to set up the software to rapidly and easily page through the disturbance graphs so as to review each one. (there is also no way to extract low frequency transients or load generated transients from the data set, so looking at every single disturbance graph is required to be thorough, which I am, and sometimes there are 1000’s of images to review)

Can you say Repetitive Stress Injury?

But I found a neat software package from Valis Enterprises called Autoclicker that seems to help. With this, I can switch on the autoclicker, click the first graph, and simply watch as the events scroll at a programmable rate. With a small logging sheet so I can note events of interest to review later, I can review a full data set without wearing out my mouse or my wrist.

This hearkens back to the days when I was analyzing BMI-4800 data (large rolls of thermal paper) – I wanted to make a motorized roller / unroller to scroll through the data as well as re-roll the tapes afterwards. Never did get that one done.