control transformer
121Electrical wiring (UK) — The modern UK standards and regulations for electrical wiring no longer differ substantially from those in other European countries. However, there are a number of noteworthy national peculiarities, habits and traditions associated with domestic… …
122Electricity meter — Typical North American domestic analog electricity meter …
123Heralds of Unicron — The term Herald of Unicron is an unofficial term that refers to a Transformer that has served as a minion of the Transformers villain, Unicron. They have appeared in numerous series, and usually have great powers associated with them. They come… …
124British Rail Class 302 — Infobox EMU name = British Rail Class 302 imagesize = 250px caption = Class 302 at Barking background = #012545 Manufacturer = BR Doncaster/York Re Build by = BR Eastliegh Mail Conversions by = BR Ilford Former Operator = c2c Formation = 4 Cars… …
125Disasters — ▪ 2009 Introduction Aviation January 23, Poland. A Spanish built CASA transport plane carrying members of the Polish air force home from a conference on flight safety in Warsaw crashes near the town of Miroslawiec; all 20 aboard are killed …
126Tweeter — A tweeter is a loudspeaker designed to produce high frequencies, typically from around 2,000 hertz to 20,000 hertz (20,000 Hz, generally considered to be the upper limit of the human hearing). A few tweeters can manage response up to an octave or …
127Welding power supply — A welding power supply is a device that provides an electric current to perform welding. Welding usually requires high current (over 80 amperes) and it can need above 12,000 amps in spot welding. Low current can also be used; welding two razor… …
128Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… …
