+rppdfire ugh even that isn't totally true, it's not the energy used to move one amp through one ohm, but the work performed by the movement of one amp through one ohm........it's not easy to teach basic electronics in this forum.....very involved field of study
The symbol on the bottom centre plug looks like an approximation of the MoD pheon or broad arrow applied to government stores. Interestingly, unless correctly applied, it is a criminal offence to use this symbol under the Public Stores Act 1875, S4.
+Steve Brace Yes, and other government stuff too. Many people assume they're just for Military use, but the GPO tools and equipment were often marked with the broad arrow too (altho interestingly not any of the phones or wiring accessories, mostly tools)
Stephen John Palmer, Stephen John Brace, Inspr Gadget, Inspector Gadget, Gadget, Insp Gadget, Stephen Brace, Stephen Palmer, Steve Palmer
Born at a very early age in that London as a genuine, bona fide Cockney, moved to Norfolk to recieve a mediocre education, studied electronics engineering at NORCAT then became a policeman for 15 years. Had a kid, got married. Now an NHS computer engineer in a small west midlands hospital.