Thyristor voltage regulator
Increasingly applied in practice thyristor voltage regulators. Simple and straightforward is of course the home switch on the wall, on which step changes the brightness of a bulb. But in an industry where requests are wider and more power, everything is the same with the only difference that everything is done with power reserve and is adapted to the operating conditions. The main thing that thyristor surge protector or power control worked in the passport (design limits). In General it is probably already clear that the thyristor controller is designed to control the power in the load (Heater, light bulb or any electrical appliance). Can be and are managed and active-inductive loads (Transformers or motors). In order to practice to check the operation of the thyristor power regulator first I just assembled a circuit for controlling the brightness of lamps in the case from the PSU calculators Elektronika MK-80, but later decided the idea to promote and control of the devices connected to the network through an isolation transformer lower voltage. The issue was the creation of a small unit that could control the fan speed on the desktop. It is clear that the motor is an inductive load and the first attempt was to try not confident, but successful. In the case of thyristor power regulator I brought the potentiometer, then progradational it according to each position and so it turned out system with manual control of the motor speed. But this seemed to me a little and wanted to bring a little bit of automation. For this I decided to build a simple thermometer on a single chip with the sensor in a bridge circuit. The sensor was conventional thermal resistance, and an actuating device was potentiometer thyristor power regulator. In General, the point is, they scored the selection of technical parameters of the point of zero when the fan was supposed to stand. In my case, if the temperature was 18 degrees above zero, the fan does not turn on, but when the temperature rose say 2 degrees, the potentiometer is turned into one position and thyristor regulator began to submit to the load voltage (thyristor being reopened). So it was like a small compact automatic blow-desktop, created on the basis of a simple power control thyristor, KU 202 to Implement M. thyristor power regulator of a variety of ways, variants schematic solution for this host very much. Probably the easiest method, when the thyristor control pulse packets. Such schemes solutions are very simple to implement, and control scheme does not require any lower voltage, usually enough ballast resistance. As they say no in thyristor power regulator expensive items, and design are overall cheaper. But for these, there are also disadvantages. For example if the control lamp, all works fine, but if to control the engine system running smoothly and stably. Apparently the current at the initial stage is not sufficient to hold, although this applies only to the thyristors with a large holding current. If anything, you and the thyristor to just pick up. Or inductive load connected in parallel to the resistor, is also a solution. So here in brief is the theme of the "Thyristor power regulator". It is possible here to write and to compose with a lot of examples of what to read and not particularly want, but from the point of view of study of this narration is enough!
<<<< Back >>>>