The secondary circuit of this transformer is connected in between the earth and the aerial, and therefore may be considered as part of it, and, accordingly, the energy which is radiated from the aerial is not simply that which is stored up in it in virtue of its own small capacity, but that which is stored up in the much larger capacity represented by the primary condenser or, as it may be called, the electrical wind chest.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
The purpose for which we employ the coil is to charge a condenser of some kind.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
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"
John Ambrose Fleming