Archive for August 2015

Biltema grounded universal travel adapter

I bought this is universal travel adapter from Biltema to be able to connect my laptop power supply with grounded schuko plug hopefully safely to UK power outlets. Many other travel adapters only work well with ungrounded loads (typically either accept only ungrounded plug or leave ground not connected). This is one rare product that

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: