Normally, alternate the alternating current with voltage and changeless frequency for voltage or frequency the device of alterable alternating current calls " transducer " . This equipment wants a three-phase above all or commutation of single-phase alternating current is dc (DC) . Next again dc (DC) commutation is three-phase or single-phase alternating current (AC) . Transducer changes output frequency and voltage at the same time, changed electric machinery to run an on-line N0 namely, make electric machinery runs next the curve is parallel moving. Because this transducer can make electric machinery with the lesser electric current that start, obtain the bigger torsion that start, namely transducer can start burden negative charge. Transducer has the basic function such as pressure regulating, frequency modulation, stabilized voltage, timing, used modern science and technology, the price is high but performance is good, internal composition is complex but use simple, just do not use motor with Yu Qi so, use each fields extensively however, various power, various specieses, various bulk, various utility have. As technical development, of cost reduce, transducer still can receive wider application certainly. CNC MillingCNC Machining