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All about electronics and circuit design

PLC teardown

PLCs have a long and storied history, with Allen-Bradley itself coining the term “programmable logic controller” in 1971 when it introduced its version of what was then called the “programmable controller.” For anyone who cut their teeth on ladder logic can testify, PLCs at the time were an elegantly simple solution to an age-old problem:

UK power outlet adapters part 2

I wrote earlier about bad UK power socket adapter. Here is another one – better but not ideal. I used this to connect smart phone charger. The basic construction looks good. You can’t touch the live parts with finger. The UK pins are all metal and not insulated on the upper side like in newer