The use of rheostat in the general family environment has no special needs, so it is often only our friends engaged in power-related industries are more clear, but its role value can not be ignored, all the content related to the power system more or less will use it! In addition, when installing and adjusting Voltage Control Scillators before they are put into operation, the following situations may be encountered:

Voltage Control Scillators Analysis of problems that may occur during debugging

(1) The motor is off and tripping; The starting current is too large, the starting is too fast, and the influence on the machinery is too large. At this time, the following adjustments can be made: ① Adjust the coil tap or use more turns of the tap; (2) If multiple groups of windings are in parallel, a group of windings can be removed or connected in series; (3) If there is only one set of windings and the number of turns is used and the starting current is still too large, the wire of the corresponding specification can be wound several more times to increase the number of turns (if there is excess space in the core window).

(2) After closing, the motor does not start, the starting current is too small, or although it starts, the stable speed is not high. At this time, it can be adjusted in the following ways: ① Adjust the coil tap or use the tap with fewer turns; (2) If multiple groups of windings are connected in series, a group of windings can be removed or connected in parallel; ③ Change the winding from a star connection to a triangle connection; If there is only one set of windings, and at least the number of turns is used, the starting torque is still small, and after the star connection is changed to the triangle connection, the starting torque is too large. At this time, the air gap between the upper and lower cores can be increased.

(3) When starting, the starting torque is too large, which has an impact on the machinery, but the stable speed after starting is low. At this time, the number of turns and the air gap between the upper and lower iron cores should be increased, so that the starting current is not too large, but this method can only play a fine tuning role.

In general, since the 1960s, Voltage Control Scillators have been widely used in place of starting resistors to control the starting of winding rotor asynchronous motors. It is a static contactless electromagnetic element that automatically changes resistance using its frequency sensitivity.

Voltage Control Scillators https://www.unikeyic.com/blog/future-trends-in-surface-acoustic-wave-and-voltage-control-oscillators.html