Temperature regulator in control circuits
Automatic control systemsThey are designed to control parameters such as current, voltage, power, pressure, etc. A special place in this kind of systems is assigned to control schemes. Depending on the object, this or that control principle is used. If we are interested in heating elements, then in most devices there is no need to build high-speed circuits.
As an example, we can consider a smalla system where a temperature controller is used. The control system has two inputs - the reference and feedback signals. Suppose that the parameter signal must be brought to a certain value by the reference signal. The temperature controller used will gently increase the current in the heating elements to the maximum. After that, it will compare the feedback signal and the task. As soon as they equalize - there will be a smooth shutdown of the object. Typically, such systems are hysteresis for reverse switching on / off - this is necessary to ensure the stable operation of the entire system.
Good prospects for managing powerfulproduction facilities, for example, induction furnaces, has a thyristor temperature controller. The element has excellent performance characteristics and showed itself well when working with an active load. In the management of other types of loads, these devices, which were innovative at one time, gradually give way to more modern schemes.
With the advent of innovative powerThe basis of semiconductor devices is the gradual replacement of "obsolete" circuits. Only the principles of regulation by which these devices operate remain unchanged.