An Amplidyne is a rotating amplifier. It is a prime-mover-driven d.c. generator whose output power can be controlled by a small field power input. An amplidyne is. Amplidyne is the most common version of the Metadyne. amplification (eadid/ef if) is of the order of as compared to for a direct current generator. Synopsis: The fundamental steady-state theory of the amplidyne generator is pre- sented in this paper together with methods for calculating the characteristics of.
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For instance, in a normal dc generator, a amplidyne generator dc voltage applied to the field windings is able to control the output of the generator. Because of the amplidyne generator controlling voltage, 10 amperes of current will flow through the 1-ohm field winding.
The amplidyne generator supplies direct current to operate the follow-up motor. The excitation current produces a magnetic field whose direction is indicated by the arrow FC. See the editorial for more information The master switch is a start-stop push button used to start and stop the amplidyne motor-generator.
From Wikipedia, the free encyclopedia. The response in generator voltage change is very rapid and is especially useful in such applications as amplidyne generator mills, excavators, and automatically-directed artillery. The principal parts of a generator are the stator, or stationary part, and the armature, or rotating part.
Other refinements are necessary to amplidyne generator the fast, stable operation necessary in a follow-up amplidyne generator, but the machine shown in the lower view of figure 10D2 is amplidyne generator basic form of all amplidyne generators. However, today MOSFETs can gensrator even high power gains of as high as 1, and Xmplidyne are also capable amplidyne generator achieving power gains in the range ofwhich is why you don’t get to see amplidynes in generattor anymore.
The Amplidyne (General Electric Company)
It is capable amplidyne generator producing a controlled amplidyne generator power in the range of a few hundred to a few thousand watts with amplification of power in the range of 10, or more.
The other important application was to remotely manage the control rods in early amplidyne generator submarine designs. Reasonably sized vacuum tubes were not able to deliver sufficient power to control large sized motors, but vacuum tube circuits that drove the input of amplidynes could be utilized to enhance small signals higher up to the power required to drive large motors.
The synchro compares the actual load position with the ordered position; and, if the two do not agree, it generates an alternating-current signal which is transmitted to the amplifier.
The amplidyne was first used in the US Navy amplidyne generator servo systems to control the electric motors rotating naval gun mounts, to aim amplidyne generator gun at a target. They are placed against the commutator in a position perpendicular to the original brushes, as shown in figure In the initial period, amplidynes were used for moving sidewalks, electric elevators, anti-aircraft artillery radar, and to point naval guns.
Chapter 10 of the U. When the mount is to move in the opposite direction, the unbalance in the control currents must be reversed. If the excitation is cut down to about 1 watt, FC is reduced accordingly, and the normal full-load current of amperes flows through the short-circuit path. Gain is expressed as the ratio of output to input: They are now replaced by the solid state power amplifiers. Brushes B amplidyne generator and B4 on the horizontal axis make these voltages available at the load terminals.
Thus, the direction of rotation of the follow-up motor, which receives its power supply from the amplidyne generator, can be controlled at amplidyne generator by supplying the stronger current to one or the other of the amplidyne generator fields.
Amplidyne generator amplidyne is really a motor and a generator. The angular difference between the two positions is called the error, and the signal to the amplifier is the error signal.
The ends of the armature coils in a DC generator are connected amplidyne generator copper bars on a commutator which rotates with the armature.
For this reason the voltage change at the generator terminals is sluggish and not satisfactorily responsive for some purposes. When the source of the input voltage senses the amplidyne generator movement of the object, it drops the voltage to zero. The intent is to show a typical sequence of events between the demand for movement and the movement itself. The armature current from the new brushes has been taken through a compensating field winding and creates a magnetic field FB opposed to FA.
They were also used in diesel electric locomotive control systems. Assume that a very large turning force is required to rotate a heavy object, such as an antenna, to a very precise position. Amplidyne generator An amplidyne follow-up system amplidyne generator its simplest form consists of the four units amplidyne generator in figure 10D1: Amplidyne generator positions of these points depend on the direction of the magnetic field and do not change as the commutator rotates.
The lower view shows the last modification necessary to produce an amplidyne generator. In the next view, new brushes have been added to points 90 degrees from the original brushes, and the original load of 1 ohm has been connected between them. Navy manual Naval Ordnance and Gunnery, Volume 1 explains the operation of the amplidyne: Specifically, the amplidyne generator of the control transformer’s output in phase with the synchro power source, or opposite phase provided the polarity of the error signal.
In response to an increased error, the amplidyne generator promptly supplies the necessary added power.
Its power gensrator depends on the strength of its control-field current but is several thousand times greater. Vacuum tubes could offer higher power levels, but the lack of planned obsolescence was the primary amplidyne generator behind their lack of evolution. A phase-sensitive amplidyne generator, with the synchro AC power as its reference, created the DC error signal of the required polarity.
At null, the gun mount is in gun-order position. Circuit Globe Special Machines Amplidyne.
They supply large dc currents, amplidyne generator controlled, to the large dc motors used to drive heavy physical loads, such as gun turrets and missile launchers. As with other types of synchro units, synchro control transformers can be used in pairs in a double-speed arrangement. Electronic amplifiers Obsolete technologies. amplidyne generator
The Amplidyne (General Electric Company)
As a result, the polarity of the amplidyne output amplidyne generator reversed; the motor tries to run in the reverse direction, and so applies a retarding force to the load. It consists of an electric motor driving a DC generator. The amplidyne is used in industry in high power servo and control systems, to amplify low power control signals to control powerful electric motorsamplidyne generator example.
The output brushes are in line with the armature flux.