transformer is a rather complicated technical device whose primary function is the conversion of certain properties and qualities of electric power, such as voltage or torque.Also, a modern transformer is able to convert AC to DC and vice versa.
Among the huge variety of currently used vremyapriborov notably the pulse of their species.
pulse transformer is widely used in communication systems, BT, automation devices, to modify the amplitude of the pulses and their polarities.The main condition for the success of this type of device is that the distortion of the signal, which is transmitted with it, should be minimal.
pulse transformer based its activities on the following principle: while its input receives rectangular pulses specified voltage in the primary winding is gradually emerging electric current whose strength is gradually beginning to increase.This, in turn, will cause a change in the magnetic field and the emergence of an electromotive force in the secondary coil.In this case, the distortion hardly occurs, and the possible loss of the current is so small that can be neglected.
As for the negative part of the pulse, the appearance of which is inevitable at the time, as the pulse transformer goes to full capacity, its effect can be minimized by installing a simple diode in the secondary side.Thus, here, the momentum will be as close to rectangular.
pulse transformer is different from other varieties of the technical system that works exclusively in the unsaturated mode.Its magnetic circuit is made of a special alloy, which necessarily has a large capacity magnetic field.
addition impulse in modern energy and electronics industries use the following basic types of transformers:
- activities of any modern Radiopribor impossible without the power transformers.Their activity is versatile on the one hand, they are essential to the receivers could be powered from a conventional AC network, and on the other to raise or lower the voltage of varying frequency amplifiers.With this function is connected and important design feature of power transformers - instead of steel cores are used inserts magnetite or carbonyl iron.
- Another kind of instrument, used mainly in advanced tracking systems and onboard computers, aircraft, a rotary transformer.Its principle of operation is that the steering angle is converted to a voltage beyond the electric current.Externally, the rotary transformer is a small electric car that runs solely on AC.Furthermore, depending on where the transformers are used, they can be either bipolar or multipolar.
- depending on whether current flows into the primary winding transformer isolated DC and AC.The basic form of the first type - autotransformer, which consists solely of a single coil that is directly included in the circuit.This type of device is intended solely for undervoltage and only for very small currents.DC transformer - more sophisticated device, consisting of engine and dynamo.In this case, the primary current generated by the engine and the secondary - a dynamo which is driven by the same motor.Often the situation occurs when the transformer is a DC motor and dinamomomashinu interconnected by a metal frame.This is done in order to save material and to improve the quality of the instrument.
