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Speed-Control for Small Asynchronous Induction Motor (IRFP47

2015-03-02 16:51  
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This article describes the Speed-Control for Small Asynchronous Induction Motor (IRFP4768PBF). The principle is very simple, very practical. The circuit components can help you understand better grasp this principle. For example, in this circuit, you can go to find and buy these components:IRFP4768PBF.

On the circuit diagram below show us a schematic which is used to set the speed of a low-power induction motor, such as those which can be found in fan applications.

Noise coming from TRIAC commutations can be filtered using capacitors C1, C2 and C4. C2 has to be from X2 technology, whereas C1 and C4 capacitors have to be from Y2 technology. Here’s the circuit diagram:

Synchronization across the TRIAC circuit schematic diagram



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