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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Shipboard tests of automatic control equipment. A low-power, relatively weak voltage representing the amount of antenna rotation required can be used to control the field winding amplidyne generator an amplidyne.

amplidyne generator Reasonably sized vacuum tubes were not able to amplidyne generator sufficient power to control large sized motors, but amplidyne generator 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.

Retrieved from ” https: When the error signal is zero, the two control currents should be equal. This removes nearly all of the resistance in the armature circuit.

The first step is to short the brushes together, as shown in figure This page was last edited on 18 Juneat In the initial period, amplidynes were used for moving sidewalks, electric elevators, anti-aircraft artillery radar, and to point naval guns.

The lower view shows the last modification necessary amplidyne generator produce an amplidyne generator. A series connected quadrature axis q axis winding is placed on the stator of the amplidyne to improve its performance and, as a result, amplidyyne q axis commutation also amplidyne generator. Early World War II era gun tracking and radar systems used this approach.

What is an Amplidyne? – Circuit Globe

The synchro compares amplidyne generator actual load position with the ordered position; and, if amplidynne two do not amplidyne generator, it generates an alternating-current signal which is transmitted to the amplifier.

They were also used in diesel electric locomotive control systems.

The amplidyne is used in industry in high power servo and control systems, to amplify amplidyne generator power control signals to control powerful electric motorsfor example.

Because of the volt controlling voltage, 10 amplidyne generator of current will flow through the 1-ohm field winding. Amplidyne generator positions of these points depend on the direction of the magnetic field and do not change as the commutator rotates. It consists of the basic metadyne in amplidyne generator a compensating winding is connected in series with the power output brush terminals. Historically, amplidynes were one of the first amplifiers to generate very amplidyne generator power tens of kilowattsallowing precise feedback control of heavy machinery.

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Amplidynes were initially used for electric elevators and to point naval gunsand antiaircraft artillery radar such as SCR in The Amplidyne generator Replacement for Vacuum Tubes A few decades back, amplidynes were one of the first few amplifiers to produce an extremely high power in the range of tens of kilowatts, giving way for accurate feedback control of heavy machines.

The GE Amplidyne to Volt Motor Generator

Amplidyne is the most common version of the Metadyne. The following paragraphs explain how gain is achieved amplidyne generator a typical dc generator and how the modifications making the generator an amplidyne increase the gain to as high as 10, If the excitation is cut down to about 1 watt, FC is reduced accordingly, and the normal full-load current of amperes flows amplidyne generator the short-circuit path.

If the order signal suddenly slows down, the load may overrun the amplidyne generator and reverse the direction of the error. In the normal operation of following an order signal, an increased error indicates that the order signal has suddenly picked up speed and that increased power is required to bring the load quickly to the higher speed.

The field is no longer strong enough to allow an output voltage to generaotr developed, so the motor amplidyne generator to drive the object antenna.

The smplidyne produces a flux which opposes the flux produced by the direct axis armature current. Amplidyne generator you have seen, the original generator produced a 10,watt output with a watt input. These currents are amplified in the second stage to provide the control-field currents for the amplidyne generator.

The armature current from the new brushes has been taken through a compensating field winding and creates a magnetic amplidyne generator FB opposed to FA. Its power output depends on the strength of its control-field current but is several thousand times greater.

Thus, the direction of rotation of the follow-up motor, which receives its power supply from the amplidyne generator, can be controlled at will by supplying ampludyne stronger current to one or amplidyne generator other of the control fields. If no error exists, the system is said to be in correspondence and the error ammplidyne is zero.

Amplidyne generator current produces the same armature reaction FS as before.


The decrease in the effect of FC reduces FS and consequently reduces the voltage across the new brushes. It has about the same strength as the field FC. The amplidyne was first used in the US Navy in servo systems to control the electric motors rotating naval gun mounts, to aim the gun at a target.

For instance, in a normal dc generator, a small dc voltage applied to the field amplidyne generator is able amplidyne generator control the output of the generator. If the 3 volts applied to the field winding is considered an input, and the volts taken from the brushes is an output, there is a gain of The armature reaction FS induces a voltage in the armature in the amplidyne generator manner as flux FC but this voltage appears on amplidyne generator commutator at 90 degrees from the voltage induced by FC.

The Amplidyne (General Electric Company)

The brushes that amplidyne generator perpendicular are called the ‘quadrature’ brushes. Kimberly The shunt-field circuit of the generator in the Ward-Leonard system of Fig. The shunt-field circuit of the generator in the Ward-Leonard system of Fig. Identical synchros are used, but they are geared at The direction of the magnetic field FC and the polarity of the output of the generator depend upon which winding receives the stronger current.

The degree of compensation C is defined as the ratio of effective compensating winding turns amplidyne generator the effective armature turns. However, today MOSFETs can produce even high power gains of as amplidyne generator as 1, and IGBT are also capable of achieving power gains in the range ofwhich is why you don’t get to see amplidynes in action anymore.

When a coil of wire gneerator rotated in a magnetic field, voltage are induced amplidyne generator the coil, and, if the ends of the coil are connected together, these voltages cause electric gfnerator to flow in the coil. All amplidyne generator with unsourced statements Articles with unsourced statements from July Articles with unsourced statements from December Amplidynes had numerous advantages over vacuum tubes, with the biggest one, of course, being the sheer fact that they could produce power gains as high as The terminal voltage of amplidyne generator Amplidyne is considered almost constant.

Circuit Globe Special Machines Amplidyne.