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), 1833-1928 · New York : T. Audel & Co. · leaf 122
ly shownin fig. 3,998. of spark plug, of which the following are extensively used: 1, primary,or magnetic make and break plugs, 2, secondary, or jump spark plugs,including plain and special forms such as coil plugs. 2,776 HAWKINS ELECTRICITY Various High Tension Ignition Systems.-There are anumber… … FXOS. 3,988 to 3.994,-slctions of well known spark plugs. The first five have porcelaininsulation; the last two, mica. 5. With dynamo and storage battery; 6. With magneto; 7. With special igniting devices. , . ,.w> A rnrrent of very high voltage is required to produce a NOTE.—Sparking pressure.…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
