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The alternating current power line frequency of 60 Hz was the primary clock rate for the lowest level operations.
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alternating and current
Atlas Autocode included a < code >< u > complex </ u ></ code > data type which would support complex numbers, partly because of pressure from the electrical engineering department, as complex numbers are used to represent the behavior of alternating current.
This type of meter responds to both direct and alternating currents ( as opposed to the moving coil ammeter, which works on direct current only ).
As alternating or direct current flows through the coil and induces a magnetic field in both vanes, the vanes repel each other and the moving vane deflects against the restoring force provided by fine helical springs.
This instrument can respond to both alternating and direct current and also indicated true RMS for AC.
For alternating currents, especially at higher frequencies, skin effect causes the current to spread unevenly across the conductor cross-section, with higher density near the surface, thus increasing the apparent resistance.
The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.
The electric charge flows in a constant direction, distinguishing it from alternating current ( AC ).
In alternating current ( AC, also ac ), the movement of electric charge periodically reverses direction.
Audio and radio signals carried on electrical wires are also examples of alternating current.
He fostered the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical theories for engineers.
* Steinmetz,, " System of distribution by alternating current.
* Theory and calculation of alternating current phenomena ", with the assistance of Ernst J. Berg, 1897.
This unidirectional behavior is called rectification, and is used to convert alternating current to direct current, including extraction of modulation from radio signals in radio receivers — these diodes are forms of rectifiers.
Rectifiers are constructed from diodes, where they are used to convert alternating current ( AC ) electricity into direct current ( DC ).
When any wire ( or other conducting object such as an antenna ) conducts alternating current, electromagnetic radiation is propagated at the same frequency as the electric current.
In 1887, Nikola Tesla filed a number of patents related to a competing form of power distribution known as alternating current.
Central power stations became economically practical with the development of alternating current power transmission, using power transformers to transmit power at high voltage and with low loss.
In engineering or household applications, current is often described as being either direct current ( DC ) or alternating current ( AC ).
The time-averaged value of an alternating current is zero, but it delivers energy in first one direction, and then the reverse.
alternating and power
In between series of juntas ( and various other short-lived regimes ), the young republic was governed by " consuls of the republic " in power ( 2 consuls alternating in power every 4 months ):
But evolution from the standpoint of the creature, with his limited knowledge, limited power, limited capacity for enjoying bliss, is an epic of alternating rest and struggle, joy and sorrow, love and hate, until, in the perfected man, God balances the pairs of opposites and transcends duality.
Oscillators convert direct current ( DC ) from a power supply to an alternating current signal.
Telephone hummer / oscillator by A. S. Hibbard in 1890 ( carbon microphone has power gain ); Larsen " used the same principle in the production of alternating current from a direct current source "; accidental development of vacuum tube oscillator ; all at p. 86.
* On the power factor and conductivity of dielectrics when tested with alternating electric currents of telephonic frequency at various temperatures ( 1912 ) Gresham, 82 pages, ASIN: B0008CJBIC
The power conditioning system uses an inverter / rectifier to transform alternating current ( AC ) power to direct current or convert DC back to AC power.
George Westinghouse and Edison became adversaries because of Edison's promotion of direct current ( DC ) for electric power distribution instead of the more easily transmitted alternating current ( AC ) system invented by Nikola Tesla and promoted by Westinghouse.
By the 1870s, efficient generators that produced alternating current ( alternators ) were available, and it was found that alternating current could power an induction coil directly, without an interrupter.
When power is then reapplied, the residual field will cause a high inrush current until the effect of the remaining magnetism is reduced, usually after a few cycles of the applied alternating current.
* June 21 – First long-distance transmission of alternating current by the Ames power plant near Telluride, Colorado, by Lucien and Paul Nunn.
For alternating current electrical power, the universal practice is to specify RMS values of a sinusoidal waveform.
The War of Currents ended with alternating current ( AC ) as the only means of long distance power transmission.
Ownership of the rights to the Tesla patents was a key advantage to the Westinghouse Company in offering a complete alternating current power system for both lighting and power.
alternating and line
An alternating magnetic field is applied at the atomizer ( graphite furnace ) to split the absorption line into three components, the π component, which remains at the same position as the original absorption line, and two σ components, which are moved to higher and lower wavelengths, respectively ( see Zeeman Effect ).
Finally, the Qin and Han Dynasties also developed crossbow firing lines, with alternating rows of crossbowmen firing and reloading similar to a musket firing line.
The lunar year consists of 30-day and 29-day lunar months, generally alternating, with an embolismic month added periodically to bring the lunar cycle into line with the solar cycle.
Circular hey-dancers face partners or along the line and pass right and left alternating a stated number of changes.
If the called party's line is available, the exchange sends an intermittent ringing signal ( about 90 volts alternating current ( AC ) in North America and UK and 60 volts in Germany ) to alert the called party to an incoming call.
The phone's ringer ( A7 ) is connected to the line through a capacitor ( A6 ), a device which blocks direct current but passes alternating current.
Rural and other telephones that were not on a common battery exchange had a magneto or hand-cranked generator to produce a high voltage alternating signal to ring the bells of other telephones on the line and to alert the operator.
This is normally done by connecting individual elements to alternating wires of a balanced transmission line.
In communications and electronic engineering, a transmission line is a specialized cable designed to carry alternating current of radio frequency, that is, currents with a frequency high enough that their wave nature must be taken into account.
Dielectric loss is caused when the insulating material inside the transmission line absorbs energy from the alternating electric field and converts it to heat ( see dielectric heating ).
The paper was usually perforated to tear into cut sheets if desired and was commonly printed with alternating white and light-green areas, allowing the reader to easily follow a line of text across the page.
This is because on-chip buses like AHB do not support tri-stating the bus or alternating the direction of any line on the bus.
Wyatt introduced contemporaries to his poulter's measure form ( Alexandrine couplets of twelve syllable iambic lines alternating with a fourteener, fourteen syllable line ), and is acknowledged a master in the iambic tetrameter.
Occluded fronts are indicated on a weather map by a purple line with alternating half-circles and triangles pointing in direction of travel.
The Naga-Uta is a lyric poem, popular in this era, in alternating five and seven lines and ending with an extra seven-syllable line ( see also the earlier choka version ).
He indented his paragraphs with alternating lengths, often by simply dropping down one line when he was finished with a paragraph.
The introduction was voiced by Dan and Rick alternating each line, with video clips and sound effects interspersed in the opening.
The first fourteen partial sums of the alternating harmonic series ( black line segments ) shown converging to the natural logarithm of 2 ( red line ).
These early defibrillators used the alternating current from a power socket, transformed from the 110-240 volts available in the line, up to between 300 and 1000 volts, to the exposed heart by way of ' paddle ' type electrodes.
He placed his Iberians and Gauls in the middle, alternating the ethnic composition across the front line, with the general himself right at the front and center.
Unsatisfied with the performance of NTSC and of initial SECAM implementations, the Germans unveiled PAL ( phase alternating line ) in 1963, technically similar to NTSC but borrowing some ideas from SECAM.
The first electric trial runs using single-phase alternating current were made in 1903 on the line Seebach-Wettingen together with the Maschinenfabrik Oerlikon ( MFO ), using the future Ce 4 / 4 locomotives (" Eva " and " Marianne ").
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