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Updated: May 7, 2025
Here is need for the utmost diligence; for the development of every latent power of persuasion; for the employment of every ounce of energy, of every resource of skill; for the expenditure of every volt of passion the soul can contain. We can only hope to capture the citadel when the utmost possibilities of attack are brought to bear upon it. Even then the garrison may hold out against us!
Thus the unit of quantity is the coulomb, the unit of current or quantity flowing per second is the ampere, the unit of electromotive force is the volt, and the unit of resistance is the ohm. The quantity of water or any other "electrolyte" decomposed by electricity is proportional to the strength of the current.
It is the mutual induction that takes place between two coils of wire which makes it possible to transform low voltage currents from a battery or a 110 volt source of current into high pressure currents, or high potential currents, as they are called, by means of a spark coil or a transformer, as well as to step up and step down the potential of the high frequency currents that are set up in sending and receiving oscillation transformers.
The electromotive force of such a cell is 1.03 volts, and a current equivalent to one volt passing through a resistance of one ohm was found to decompose 0.00146 grain of water in one second. The battery is divided into "cabinets," which hold from 1,200 to 2,160 small elements each. This facilitates removal, and also the detection of any fault that may occur.
A volt meter across the terminals of the motor gave the following readings with the current at 9 amperes: Minimum 90 volts, maximum 148 volts, average 119, which gives us a minimum average per operator of 4.5 volts and a maximum average of 7.4 volts, or a general average of 5.9 volts per operator.
For this telephone transmitting set you need: one aerial ammeter; one tuning coil; one telephone modulator; one aerial series condenser; one 4 cell dry battery or a 6 volt storage battery; one microphone transmitter; one battery switch; one grid condenser; one grid leak; two 5 watt oscillator tubes with sockets; one blocking condenser; one oscillation choke coil; two filter condensers; one filter reactance coil; an alternating current power transformer, and two 20 watt rectifier vacuum tubes.
The apparatus you need for this set includes: a loose coupled tuning coil, a variable condenser, two fixed condensers, a crystal detector, or better a vacuum tube detector, an A or 6 volt storage battery, a rheostat, a B or 22-1/2 volt dry cell battery, a fixed resistance unit, or leak grid as it is called, and a pair of head-phones. The Vacuum Tube Amplifier.
The thing takes us all the way back to Galvani, who was the first to observe and study animal electricity. The heart makes only one three-thousandth of a volt of electricity at each beat. It would take over two hundred thousand men to light one of these incandescent lamps, two million or more to run a trolley- car.
If you have a 110 volt direct lighting current in your home instead of 110 volt alternating current, then you will also need an electrolytic interrupter, for in this case the primary circuit of the transformer must be made and broken rapidly in order to set up alternating currents in the secondary coil. The Alternating Current Transformer.
These were: "Strew two shuffefuls of ashes into the volt, but don't spill two shuffefuls onto the floor. By order of the Gurl who has to sweap up." This order was emphatically approved of by those fastidious ones who didn't have to "sweep up."
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