Wireless Telegraphy And Telephony Simply Explained a Practical Treatise Embraci
Wireless Telegraphy And Telephony Simply Explained a Practical Treatise Embraci
Alfred Powell Morgan
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The box is then filled with boiled lin- seed oil or amber petroleum. A rheostat or impedance and reactance coil should be placed in series with the transformer to regulate the current and also to prevent arcing across the spark gap. Reactance. In Chapter I, the lag and lead of a circuit were explained in connection with tuning. This is a prop- erty of every alternating circuit and is brought to our notice again in the transformer which charges the condenser. The current developed by a transform...er is a leading current, since the instantaneous values of the current do not corre- spond to the proportionate values of the voltage supplying the current. In order to force the current values of the charging current to correspond with the voltage it is neces- sary to produce a "lag. " This is accomplished by means of an adjustable reactance in series with the primary of the transformer. A reactance or inductance suitable for the 2-K. W. Trans- former may be made by building up a coil in the same manner as described under the heading of the J-K.
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