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The word capacitance means the electrostatic capacity of a condenser or a circuit. The capacitance of a condenser or a circuit is the quantity of electricity which will raise its pressure, or potential, to a given amount. The capacitance of a condenser or a circuit depends on its size and form and the voltage of the current that is charging it.
My father would never let me marry a grocer's clerk. But I'll marry you to-night, Tommy, if you say so." Old Jacob Spraggins came home at 9:30 P. M., in his motor car. The make of it you will have to surmise sorrowfully; I am giving you unsubsidized fiction; had it been a street car I could have told you its voltage and the number of wheels it had.
To do this you need only to use a voltmeter across the filament terminals instead of an ammeter in series with it; then regulate the voltage of the filament with a rheostat. The Operation of C. W. Telegraph Transmitters with Alternating Current With Two Oscillator Tubes. In other words these oscillations are sustained but as in the case of those of a single tube, their amplitude rises and falls.
At the same time the alternating positive and negative voltage of the oscillating currents is impressed on the grid; at each change from + to and back again it allows the electrons to strike the plate and then shuts them off; as the electrons form the conducting path between the filament and the plate the larger direct current from the B battery is permitted to flow through the detector tube and the headphones.
There were two sets, each generating a 1,500 or 2,000 volt direct current; and the two generators being permanently connected, delivered a combined direct current of 3,000 volts as high a direct voltage current, Tom knew, as had ever been adopted for railroad work. The current voltage for ordinary street railway work is 550 volts.
Woman is also to become an electrician, at least empirically, and in time soon to come will understand her voltage and her Amperes as she now does her drafts and dampers and the quality of her fuel.
There was induction, to raise the voltage at the peaks and troughs of the oscillations. A transistor acted as a valve to make the oscillations repeated surges of current of one sign in the innumerable sharp points of the graters. And there was an effect he did not anticipate.
You will also observe that the oscillations set up by the positive part of the current are not of constant amplitude but start at zero the instant the positive part begins to energize the plate and they keep on increasing in amplitude as the current rises in voltage until the latter reaches its maximum; then as it gradually drops again to zero the oscillations decrease proportionately in amplitude with it.
During 1858, Farmer, who, like Edison, was a ceaseless investigator, had made a series of studies upon the production of light by electricity, and had even invented an automatic regulator by which a number of platinum lamps in multiple arc could be kept at uniform voltage for any length of time.
The ancestor was rising in Jack. Prather saw an electric spark in Jack's eyes, the spark of the high voltage that made his muscles weave and a flutter come in his cheeks. "No, I am not going back until I have recovered the rights that you have taken from Little Rivers!" he said. Prather in sudden confusion realized that he had let his feelings go too soon.
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