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Variac Control
Variac is a single winding transformer . One end of the winding between the input and output are shared. The other end of the output side of the coil with the help of a special mechanical mechanism different from the points of contact with the ettirilerek output voltage is changed.The output voltage value according to the tip is moving. The introduction of higher voltage can be obtained by proper connection. Rectifier, regulator and so on. Available in many areas. Variac connected to the power of the device used in the control of rectifier power control method is preferred, although mostly from entry. Thus, according to a lower current is used Variac and sizes get smaller, easier to control.Variac, mostly with the help of a small motor assembly is moved. Variac rectifier control unit controls the engine through a suitable driver.The motor rotates the position of the tip by changing the output voltage increases or decreases moving Variac. Thus, a constant DC voltage is obtained. The most important advantage of the Variac system is it doesn't cause the network to adjust the voltage disturbances caused by the lack of signal. Only the amplitude of the signal changes. Therefore, the DC output voltage of the DC signal value of roughness factor is the same.Thyristor device, the device according to a standard variac provides a better linear DC. The most important drawback of continuous use in windings of the mechanical parts and is vulnerable to external factors.In addition, the mechanical arrangement that can be obtained even if the speed control thyristor in comparison with a system that remains quite slow. Thyristor system stability and response time is longer than the regulation |
