The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 461
gswithout reference to absolute value of any one of them. Thus onelamp may be of relatively double resistance compared to another,but this states nothing of the resistance in ohms of either lamp. Relay. A receiving instrument which moves in accordancewith impulses of currents received, and in so… … Fig. 287. Relay. The typical relay includes an electro-magnet and armature. Tothe latter an arm is attached and the lower end of the arm works inpivots. As the armature is attracted the arm swings towards themagnet. When the current is cut off, the armature and arm aredrawn back by a spring. When…
Electricity
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