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The operation of key circuits of the latter kind will be described presently. The Operation of C. W. Telegraph Transmitters with Alternating Current With a Single Oscillator Tube. Where an oscillator tube telegraph transmitter is operated by a 110 volt alternating current as the initial source of energy, a buzzer, chopper or other interruptor is not needed in the key circuit.
At each of the stations there is a battery B B', an interruptor or sending key K K'to make and break the continuity of the circuit, a receiving instrument R R'to indicate the signal currents by their sensible effects, and connections with ground or "earth plates" E E' to engage the earth as a return wire. These are usually copper plates buried in the moist subsoil or the water pipes of a city.
The operation of key circuits of the latter kind will be described presently. The Operation of C. W. Telegraph Transmitters with Alternating Current With a Single Oscillator Tube. Where an oscillator tube telegraph transmitter is operated by a 110 volt alternating current as the initial source of energy, a buzzer, chopper or other interruptor is not needed in the key circuit.
With Direct Current. When a 110 volt direct current is used to energize the power transformer an electrolytic interruptor is needed to make and break the primary circuit, just as a vibrator is needed for the same purpose with a spark coil.
With Direct Current. When a 110 volt direct current is used to energize the power transformer an electrolytic interruptor is needed to make and break the primary circuit, just as a vibrator is needed for the same purpose with a spark coil.
One of the bulls was hit, but evidently not in a deadly manner, for the motion of the boat had disturbed Leo's aim. Each combatant turned with a look of wild surprise at the interruptor, and, as not unfrequently happens in cases of interference with fights, both made a furious rush at him. At the same moment, all the cows seemed to be smitten with pugnacity, and joined in the attack.
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