Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 192
ht the lamps. The coilbeing then short circuited, it and the cylinder cool down, and contact is broken, whereuponthe coil is put in circuit once more, and warms up again. In some sizes of this flasher,the contact gap is shunted by a small condenser fitted beneath the base. This helps toeliminate… … Pig. 1.032.—Monogram or unit for carriage call or talking sign. It consists of a collectioo ofmetal compartments each arranged to receive an incandescent lamp. The purpose ofthese compartments is to confine the light to a certain space, thu^forming a dearly definednumber or letter which can be read…
Electrical engineering
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