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Where you have to generate the current with a battery you must use a spark coil, but if you have a 110-volt direct or alternating lighting current in your home you can use a transformer which will give you more power. For this set you will need: a spark-coil, a battery of dry cells, a telegraph key, a spark gap, a high-tension condenser, and an oscillation transformer.
A rotary gap with a 110-volt motor costs about $25.00. A quenched spark gap not only eliminates the noise of the ordinary gap but, when properly designed, it increases the range of an induction coil set some 200 per cent. The High Tension Condenser. A condenser of this value for a 1/4-kilowatt transformer costs $7.00; for a 1/2-kilowatt transformer $14.00, and for a 1-kilowatt transformer $21.00.
For the locomotive a four-wheel iron truck was used, and upon it was mounted one of the long "Z" type 110-volt Edison dynamos, with a capacity of 75 amperes, which was to be used as a motor. This machine was laid on its side, its armature being horizontal and located toward the front of the locomotive. We now quote from an article by Mr.
For connecting up the different pieces of apparatus of the transmitter it is a good scheme to use copper braid; this is made of braided copper wire in three sizes and sells for 7,15 and 20 cents a foot respectively. A piece of it is pictured at J. The Panel Cut-Out. This is used to connect the cord of the 110-volt lamp socket with the transmitter.
The practical effect of this drop would be a loss of illumination in the lamps as we go farther away from the source of energy. This may be illustrated by a simple diagram in which G is a generator, or source of energy, furnishing current at a potential or electrical pressure of 110 volts; 1 and 2 are main conductors, from which 110-volt lamps, L, are taken in derived circuits.
A rotary gap with a 110-volt motor costs about $25.00. A quenched spark gap not only eliminates the noise of the ordinary gap but, when properly designed, it increases the range of an induction coil set some 200 per cent. The High Tension Condenser. A condenser of this value for a 1/4-kilowatt transformer costs $7.00; for a 1/2-kilowatt transformer $14.00, and for a 1-kilowatt transformer $21.00.
For connecting up the different pieces of apparatus of the transmitter it is a good scheme to use copper braid; this is made of braided copper wire in three sizes and sells for 7,15 and 20 cents a foot respectively. A piece of it is pictured at J. The Panel Cut-Out. This is used to connect the cord of the 110-volt lamp socket with the transmitter.
Where you have to generate the current with a battery you must use a spark coil, but if you have a 110-volt direct or alternating lighting current in your home you can use a transformer which will give you more power. For this set you will need: a spark-coil, a battery of dry cells, a telegraph key, a spark gap, a high-tension condenser, and an oscillation transformer.
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