| 单词 | primary coil |
| 例句 | Not only does the iron core trap the magnetic field created by the primary coil, its magnetization increases the field strength. College Physics for AP Courses 2015-08-12T00:00:00Z The primary coil is placed sidewise for two reasons: First, to increase the potential at the wire; and, second, to increase the drop through the coil. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z But electric toothbrushes transfer power only from the primary coil to the secondary one at very close range. Novelties: Built-In Wireless Charging for Electronic Devices 2012-03-10T19:30:37Z The induction coil is employed to produce a rapidly intermittent series of electrical oscillations in the primary coil of an oscillation transformer by the discharge through it of a Leyden jar. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z This method has also been used for induction coils, where it is desirable to keep the ends of the wire away from the core and primary coil. Hawkins Electrical Guide, Number One 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 2011-12-24T03:07:54.823Z One possibility is to connect DC to the primary coil through a switch. College Physics for AP Courses 2015-08-12T00:00:00Z If the primary coil is placed sidewise, as in Fig. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z And all the while the alternations in the primary coil will be pumping currents, as it were, round and round the ring of molten iron. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z The receiver, as shown in the diagram, consists of a pair of quarter wave-length receiving wires connected through two condensers, which are short-circuited by the primary coil of an oscillation transformer. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z Each time the magnetic field of the primary coil is reversed the current in the secondary changes direction. The Story of Great Inventions 2011-10-05T02:00:16.353Z Mutual inductance is the effect of Faraday’s law of induction for one device upon another, such as the primary coil in transmitting energy to the secondary in a transformer. College Physics for AP Courses 2015-08-12T00:00:00Z If, previous to the discharge of the jar, the primary coil is raised to a high potential, it will induce over the glass of the tube a distribution of electricity. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Induction furnaces, in which a primary coil of copper wire is used, the secondary being formed by the metal charge itself, contained in a suitable annular groove. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z In applying the Wehnelt break to an induction coil, the condenser is discarded and also the ordinary hammer break, and the Wehnelt break is placed in circuit with the primary coil. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z The best method of producing a smooth current in the secondary coil is for the interruptor hammer to vibrate directly against the iron core of the primary coil. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z The power transmitter adjusts its primary coil’s transmission frequency to match the receiver’s and the appropriate amount of charge is transmitted across the air gap. Cutting the clutter 2010-03-12T09:45:00Z In this experiment the primary coil should be preferably placed so that it extends only about half way into the secondary coil. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z It has two primary coils, one containing sixty-seven pounds of wire, and the other eighty-four pounds, the wire being .096 inch in diameter. The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action In Table I there is given, for each of several values of the inductance of the primary coil, the shortest and the longest wave-lengths which you can expect to receive. Letters of a Radio-Engineer to His Son The pulsations set up by transmitter T in primary coil P are magnified by secondary coil S for transmission through the line circuit, and affect both receivers. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use The current will fly around and around through the battery, primary coil, and interrupter as long as the end of P touches a nail. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity Upon this core are wound, say, four coils, B B B' B', used as primary coils, and for which long lengths of comparatively fine wire are employed. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Now, upon making connection with a battery to the primary coil, there will be two results produced simultaneously. The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action When a current passes through the primary coil, the surging movement, heretofore explained, is transmitted to the iron core, and the iron core, in turn, transmits this electrical energy to the secondary coil. Electricity for Boys The primary coil is wound with 3 layers of No. 18 cotton covered wire, and the secondary consists of about 12 layers of No. 38 silk covered. Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. It is held to the base by the screw, S, and is bent so that it presses tightly against S I. Through F is a screw, R, to hold one end of the primary coil. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity The primary coils D in this case have a low self-induction and high resistance, while the coils E F, included in the secondary circuit, have a high self-induction and low resistance. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The wires leading to the primary coils of the sparking coils pass through the explosive a meter or more apart. Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171 The primary coil receives the current from the battery, or source of electrical power, and the secondary coil receives charges, and transmits the current. Electricity for Boys Across these alternating mains are connected the primary coils of track transformers located at each signal, the secondaries of which supply current of about 10 volts to the rails of the track sections. The New York Subway Its Construction and Equipment To start the secondary coil, make a pinhole, L, just outside of the insulation, K, of the primary coil. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity However, by properly designing the generator and determining the magnetizing effect of the primary coils, the latter element may be made to disappear. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Take away the secondary coil so as to stop that outlet, the energy expends itself on the iron core and the primary coil. Scientific American Supplement, No. 711, August 17, 1889 If, for instance, the primary coil has a low voltage,p. Electricity for Boys The primary coils are filled with mercury, the secondary coils form continuous closed circuits. Scientific American Supplement, No. 810, July 11, 1891 At one end of R is a screw, S, which is used as a binding-post for the outside end, B, of the primary coil. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity After the primary coil is wound it should be thoroughly insulated before winding the secondary. The Boy Mechanic: Volume 1 700 Things for Boys to Do This is done in the Ruhmkorff coil primary; the condenser forms a sort of blind alley for the extra current on its beginning to flow out of the primary coil. Scientific American Supplement, No. 711, August 17, 1889 This is an indication that both sides of the secondary circuit are grounded or that a short circuit exists in a primary coil. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The discharge passed along the inner side of the bulbs, the primary coils being placed within the secondary. Scientific American Supplement, No. 810, July 11, 1891 The primary coil should be made of 3 layers of wire, which should be coarser than that used for the secondary coil. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity The primary coil was wound with four layers of No. 20 wire and the secondary contains 4 oz. The Boy Mechanic: Volume 1 700 Things for Boys to Do The velocity of emanation of lines around the primary coil is probably near that of light, and each line passes across the section secondary conductor in a practically inappreciable time. Scientific American Supplement, No. 711, August 17, 1889 This adjustment for voltage is made by means of taps brought out from the primary coil to a rotary switch. The Radio Amateur's Hand Book Now, the sudden discharge of the condenser C C through the primary coil P C enhances the inductive effect of the current. The Story of Electricity In this set, however, an oscillation transformer is used and as the primary coil of it is included in the closed circuit the oscillations set up in it produce strong oscillating magnetic lines of force. The Radio Amateur's Hand Book To wire up the parts connect the leading-in wire of the aerial with the primary coil, which is the middle one of the tuner, and connect the other terminal with the ground. The Radio Amateur's Hand Book The primary coil is wound on a fixed cylinder and its inductance is varied by means of a sliding contact like the double slide tuning coil described above. The Radio Amateur's Hand Book As with the telephone induction coil, the microphone transmitter is connected in series with the primary coil and a 6 volt dry or storage battery. The Radio Amateur's Hand Book For such a transformer the primary coil is formed of heavy wire and the secondary circuit is the molten metal which is contained in an annular channel. The Story of Electricity Connecting Up the Parts.—Begin by connecting the leading-in wire of the aerial with the binding post end of the primary coil of the loose coupler as shown in the wiring diagram Fig. The Radio Amateur's Hand Book The current from a generator flows through the primary coil of the transformer and the alternations of the usual lighting current is 60 cycles per second. The Radio Amateur's Hand Book The primary coil is formed of 6 turns of copper strip, or No. 9 copper wire, and the secondary is formed of 9 turns of strip, or wire. The Radio Amateur's Hand Book To wire up the set begin by connecting the leading-in wire to the fixed end of the primary coil, or stator, of the variocoupler, as shown in Fig. The Radio Amateur's Hand Book The primary coil, which is the outside coil, is hinged to the base and can be raised or lowered like the lid of a box. The Radio Amateur's Hand Book The secondary coil is wound on a cylinder that slides in and out of the primary coil. The Radio Amateur's Hand Book |
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