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alternating current amperes Annalen anode apparatus brush discharge cathode charge coefficient of self-induction coil giving condenser connected constant construction copper current value curve decreases diameter dielectric strength difference of potential disks distance duration e.m.f. of self-induction effect electric electrodes electrolytic interrupter employed energy equal equation frequency glass greater heated hot spark ignition Imax increases induction coil insulating iron core large capacity layer length of sparks Leyden jar liquid Lord Rayleigh magnetic circuit maximum measured mercury interrupters metallic millimeters motor mutual induction necessary number of turns obtained operation oscillations oscillograph phenomena plate platinum primary circuit primary current produced resistance resonance rheostat rosin rupture spark secondary capacity secondary circuit secondary current secondary e.m.f. secondary spark secondary terminals short-circuited shown in Fig shows spark-gap striking voltage surface takes place Tesla Tesla coil theory thickness tion turbine value of current varies volts Wehnelt interrupter winding zero
Page 3 - ... impressed") voltage to secondary voltage is equal to the ratio of the number of turns in the respective windings.
Page 41 - The role of secondary capacity.—The secondary capacity is not situated at the secondary terminals; it is distributed, in a more or less regular manner, throughout the entire secondary circuit.
Page 59 - ... being constant. This duration explains the relative slowness of the demagnetization of the iron core and explains certain irregularities in high-speed mechanical interrupters.
Page 38 - ... lag varies with the coefficient of self-induction, the capacity and the current value.
Page 32 - As long as the primary is closed, the energy is furnished by the source and the current is limited only by the resistance of the circuit.
Page 7 - B followed by a number refers to the bibliography at the end of the book.
Page 179 - ... because the spark does not take place at the moment when the cam produces the rupture; there is a retard which varies according to the circumstances.