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 126
keptin motion by clockwork, or by an electro-mag-net, attracting intermittently an armature at-tached to its rod, the magnet circuit beingopened and closed by the pendulum or circuitbreaker itself. A mercury contact may be usedwith it. Circuit Breaker, Tuning Fork. A circuitbreaker in which a… … / 122 vSTANDARD ELKCTRICAIv DICTIONARY. ment is necessarily delicate, owing to the limited amplitude of themotion of the fork. The fork is kept in vibration sometimes byan electro-magnet, which is excited as the circuit is closed by thefork. One leg of the fork acts as the armature of the…
Electricity
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